<?xml version="1.0" encoding="UTF-8" ?>
 <volume id="N06">
   <paper id="1000">
        <title>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</title>
        <editor><first>Robert C.</first><last>Moore</last></editor>
        <editor><first>Jeff</first><last>Bilmes</last></editor>
        <editor><first>Jennifer</first><last>Chu-Carroll</last></editor>
        <editor><first>Mark</first><last>Sanderson</last></editor>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1</url>
        <bibtype>book</bibtype>
        <bibkey>HLT-NAACL06-Main:2006</bibkey>
   </paper>
   <paper id="1001">
        <title>Capitalizing Machine Translation</title>
        <author><first>Wei</first><last>Wang</last></author>
        <author><first>Kevin</first><last>Knight</last></author>
        <author><first>Daniel</first><last>Marcu</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>1&#8211;8</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1001</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>wang-knight-marcu:2006:HLT-NAACL06-Main</bibkey>
   </paper>
   <paper id="1002">
        <title>Do we need phrases? Challenging the conventional wisdom in Statistical Machine Translation</title>
        <author><first>Chris</first><last>Quirk</last></author>
        <author><first>Arul</first><last>Menezes</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>9&#8211;16</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1002</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>quirk-menezes:2006:HLT-NAACL06-Main</bibkey>
   </paper>
   <paper id="1003">
        <title>Improved Statistical Machine Translation Using Paraphrases</title>
        <author><first>Chris</first><last>Callison-Burch</last></author>
        <author><first>Philipp</first><last>Koehn</last></author>
        <author><first>Miles</first><last>Osborne</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>17&#8211;24</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1003</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>callisonburch-koehn-osborne:2006:HLT-NAACL06-Main</bibkey>
   </paper>
   <paper id="1004">
        <title>Segment Choice Models: Feature-Rich Models for Global Distortion in Statistical Machine Translation</title>
        <author><first>Roland</first><last>Kuhn</last></author>
        <author><first>Denis</first><last>Yuen</last></author>
        <author><first>Michel</first><last>Simard</last></author>
        <author><first>Patrick</first><last>Paul</last></author>
        <author><first>George</first><last>Foster</last></author>
        <author><first>Eric</first><last>Joanis</last></author>
        <author><first>Howard</first><last>Johnson</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>25&#8211;32</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1004</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>kuhn-EtAl:2006:HLT-NAACL06-Main</bibkey>
   </paper>
   <paper id="1005">
        <title>Effectively Using Syntax for Recognizing False Entailment</title>
        <author><first>Rion</first><last>Snow</last></author>
        <author><first>Lucy</first><last>Vanderwende</last></author>
        <author><first>Arul</first><last>Menezes</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>33&#8211;40</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1005</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>snow-vanderwende-menezes:2006:HLT-NAACL06-Main</bibkey>
   </paper>
   <paper id="1006">
        <title>Learning to recognize features of valid textual entailments</title>
        <author><first>Bill</first><last>MacCartney</last></author>
        <author><first>Trond</first><last>Grenager</last></author>
        <author><first>Marie-Catherine</first><von>de</von><last>Marneffe</last></author>
        <author><first>Daniel</first><last>Cer</last></author>
        <author><first>Christopher D.</first><last>Manning</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>41&#8211;48</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1006</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>maccartney-EtAl:2006:HLT-NAACL06-Main</bibkey>
   </paper>
   <paper id="1007">
        <title>Acquisition of Verb Entailment from Text</title>
        <author><first>Viktor</first><last>Pekar</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>49&#8211;56</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1007</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>pekar:2006:HLT-NAACL06-Main</bibkey>
   </paper>
   <paper id="1008">
        <title>Acquiring Inference Rules with Temporal Constraints by Using Japanese Coordinated Sentences and Noun-Verb Co-occurrences</title>
        <author><first>Kentaro</first><last>Torisawa</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>57&#8211;64</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1008</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>torisawa:2006:HLT-NAACL06-Main</bibkey>
   </paper>
   <paper id="1009">
        <title>Role of Local Context in Automatic Deidentification of Ungrammatical, Fragmented Text</title>
        <author><first>Tawanda</first><last>Sibanda</last></author>
        <author><first>Ozlem</first><last>Uzuner</last></author>
        <author><first>Ozlem</first><last>Uzuner</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>65&#8211;73</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1009</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>sibanda-uzuner-uzuner:2006:HLT-NAACL06-Main</bibkey>
   </paper>
   <paper id="1010">
        <title>Exploiting Domain Structure for Named Entity Recognition</title>
        <author><first>Jing</first><last>Jiang</last></author>
        <author><first>ChengXiang</first><last>Zhai</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>74&#8211;81</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1010</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>jiang-zhai:2006:HLT-NAACL06-Main</bibkey>
   </paper>
   <paper id="1011">
        <title>Named Entity Transliteration and Discovery from Multilingual Comparable Corpora</title>
        <author><first>Alexandre</first><last>Klementiev</last></author>
        <author><first>Dan</first><last>Roth</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>82&#8211;88</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1011</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>klementiev-roth:2006:HLT-NAACL06-Main</bibkey>
   </paper>
   <paper id="1012">
        <title>Reducing Weight Undertraining in Structured Discriminative Learning</title>
        <author><first>Charles</first><last>Sutton</last></author>
        <author><first>Michael</first><last>Sindelar</last></author>
        <author><first>Andrew</first><last>McCallum</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>89&#8211;95</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1012</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>sutton-sindelar-mccallum:2006:HLT-NAACL06-Main</bibkey>
   </paper>
   <paper id="1013">
        <title>A Maximum Entropy Approach to Combining Word Alignments</title>
        <author><first>Necip Fazil</first><last>Ayan</last></author>
        <author><first>Bonnie J.</first><last>Dorr</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>96&#8211;103</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1013</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>ayan-dorr:2006:HLT-NAACL06-Main</bibkey>
   </paper>
   <paper id="1014">
        <title>Alignment by Agreement</title>
        <author><first>Percy</first><last>Liang</last></author>
        <author><first>Ben</first><last>Taskar</last></author>
        <author><first>Dan</first><last>Klein</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>104&#8211;111</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1014</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>liang-taskar-klein:2006:HLT-NAACL06-Main</bibkey>
   </paper>
   <paper id="1015">
        <title>Word Alignment via Quadratic Assignment</title>
        <author><first>Simon</first><last>Lacoste-Julien</last></author>
        <author><first>Ben</first><last>Taskar</last></author>
        <author><first>Dan</first><last>Klein</last></author>
        <author><first>Michael I.</first><last>Jordan</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>112&#8211;119</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1015</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>lacostejulien-EtAl:2006:HLT-NAACL06-Main</bibkey>
   </paper>
   <paper id="1016">
        <title>An Empirical Study of the Behavior of Active Learning for Word Sense Disambiguation</title>
        <author><first>Jinying</first><last>Chen</last></author>
        <author><first>Andrew</first><last>Schein</last></author>
        <author><first>Lyle</first><last>Ungar</last></author>
        <author><first>Martha</first><last>Palmer</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>120&#8211;127</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1016</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>chen-EtAl:2006:HLT-NAACL06-Main</bibkey>
   </paper>
   <paper id="1017">
        <title>Unknown word sense detection as outlier detection</title>
        <author><first>Katrin</first><last>Erk</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>128&#8211;135</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1017</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>erk:2006:HLT-NAACL06-Main</bibkey>
   </paper>
   <paper id="1018">
        <title>Understanding Temporal Expressions in Emails</title>
        <author><first>Benjamin</first><last>Han</last></author>
        <author><first>Donna</first><last>Gates</last></author>
        <author><first>Lori</first><last>Levin</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>136&#8211;143</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1018</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>han-gates-levin:2006:HLT-NAACL06-Main</bibkey>
   </paper>
   <paper id="1019">
        <title>Partial Training for a Lexicalized-Grammar Parser</title>
        <author><first>Stephen</first><last>Clark</last></author>
        <author><first>James</first><last>Curran</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>144&#8211;151</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1019</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>clark-curran:2006:HLT-NAACL06-Main</bibkey>
   </paper>
   <paper id="1020">
        <title>Effective Self-Training for Parsing</title>
        <author><first>David</first><last>McClosky</last></author>
        <author><first>Eugene</first><last>Charniak</last></author>
        <author><first>Mark</first><last>Johnson</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>152&#8211;159</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1020</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>mcclosky-charniak-johnson:2006:HLT-NAACL06-Main</bibkey>
   </paper>
   <paper id="1021">
        <title>Multilingual Dependency Parsing using Bayes Point Machines</title>
        <author><first>Simon</first><last>Corston-Oliver</last></author>
        <author><first>Anthony</first><last>Aue</last></author>
        <author><first>Kevin</first><last>Duh</last></author>
        <author><first>Eric</first><last>Ringger</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>160&#8211;167</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1021</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>corstonoliver-EtAl:2006:HLT-NAACL06-Main</bibkey>
   </paper>
   <paper id="1022">
        <title>Multilevel Coarse-to-Fine PCFG Parsing</title>
        <author><first>Eugene</first><last>Charniak</last></author>
        <author><first>Mark</first><last>Johnson</last></author>
        <author><first>Micha</first><last>Elsner</last></author>
        <author><first>Joseph</first><last>Austerweil</last></author>
        <author><first>David</first><last>Ellis</last></author>
        <author><first>Isaac</first><last>Haxton</last></author>
        <author><first>Catherine</first><last>Hill</last></author>
        <author><first>R.</first><last>Shrivaths</last></author>
        <author><first>Jeremy</first><last>Moore</last></author>
        <author><first>Michael</first><last>Pozar</last></author>
        <author><first>Theresa</first><last>Vu</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>168&#8211;175</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1022</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>charniak-EtAl:2006:HLT-NAACL06-Main</bibkey>
   </paper>
   <paper id="1023">
        <title>A Fully-Lexicalized Probabilistic Model for Japanese Syntactic and Case Structure Analysis</title>
        <author><first>Daisuke</first><last>Kawahara</last></author>
        <author><first>Sadao</first><last>Kurohashi</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>176&#8211;183</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1023</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>kawahara-kurohashi:2006:HLT-NAACL06-Main</bibkey>
   </paper>
   <paper id="1024">
        <title>Fully Parsing the Penn Treebank</title>
        <author><first>Ryan</first><last>Gabbard</last></author>
        <author><first>Seth</first><last>Kulick</last></author>
        <author><first>Mitchell</first><last>Marcus</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>184&#8211;191</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1024</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>gabbard-kulick-marcus:2006:HLT-NAACL06-Main</bibkey>
   </paper>
   <paper id="1025">
        <title>Exploiting Semantic Role Labeling, WordNet and Wikipedia for Coreference Resolution</title>
        <author><first>Simone Paolo</first><last>Ponzetto</last></author>
        <author><first>Michael</first><last>Strube</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>192&#8211;199</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1025</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>ponzetto-strube:2006:HLT-NAACL06-Main</bibkey>
   </paper>
   <paper id="1026">
        <title>Identifying and Analyzing Judgment Opinions</title>
        <author><first>Soo-Min</first><last>Kim</last></author>
        <author><first>Eduard</first><last>Hovy</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>200&#8211;207</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1026</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>kim-hovy:2006:HLT-NAACL06-Main</bibkey>
   </paper>
   <paper id="1027">
        <title>Learning to Detect Conversation Focus of Threaded Discussions</title>
        <author><first>Donghui</first><last>Feng</last></author>
        <author><first>Erin</first><last>Shaw</last></author>
        <author><first>Jihie</first><last>Kim</last></author>
        <author><first>Eduard</first><last>Hovy</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>208&#8211;215</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1027</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>feng-EtAl:2006:HLT-NAACL06-Main</bibkey>
   </paper>
   <paper id="1028">
        <title>Towards Automatic Scoring of Non-Native Spontaneous Speech</title>
        <author><first>Klaus</first><last>Zechner</last></author>
        <author><first>Isaac</first><last>Bejar</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>216&#8211;223</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1028</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>zechner-bejar:2006:HLT-NAACL06-Main</bibkey>
   </paper>
   <paper id="1029">
        <title>Unsupervised and Semi-supervised Learning of Tone and Pitch Accent</title>
        <author><first>Gina-Anne</first><last>Levow</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>224&#8211;231</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1029</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>levow:2006:HLT-NAACL06-Main</bibkey>
   </paper>
   <paper id="1030">
        <title>Learning Pronunciation Dictionaries: Language Complexity and Word Selection Strategies</title>
        <author><first>John</first><last>Kominek</last></author>
        <author><first>Alan W</first><last>Black</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>232&#8211;239</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1030</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>kominek-black:2006:HLT-NAACL06-Main</bibkey>
   </paper>
   <paper id="1031">
        <title>Relabeling Syntax Trees to Improve Syntax-Based Machine Translation Quality</title>
        <author><first>Bryant</first><last>Huang</last></author>
        <author><first>Kevin</first><last>Knight</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>240&#8211;247</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1031</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>huang-knight:2006:HLT-NAACL06-Main</bibkey>
   </paper>
   <paper id="1032">
        <title>Grammatical Machine Translation</title>
        <author><first>Stefan</first><last>Riezler</last></author>
        <author><first>John T.</first><last>Maxwell III</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>248&#8211;255</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1032</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>riezler-maxwelliii:2006:HLT-NAACL06-Main</bibkey>
   </paper>
   <paper id="1033">
        <title>Synchronous Binarization for Machine Translation</title>
        <author><first>Hao</first><last>Zhang</last></author>
        <author><first>Liang</first><last>Huang</last></author>
        <author><first>Daniel</first><last>Gildea</last></author>
        <author><first>Kevin</first><last>Knight</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>256&#8211;263</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1033</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>zhang-EtAl:2006:HLT-NAACL06-Main</bibkey>
   </paper>
   <paper id="1034">
        <title>Modelling User Satisfaction and Student Learning in a Spoken Dialogue Tutoring System with Generic, Tutoring, and User Affect Parameters</title>
        <author><first>Kate</first><last>Forbes-Riley</last></author>
        <author><first>Diane</first><last>Litman</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>264&#8211;271</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1034</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>forbesriley-litman:2006:HLT-NAACL06-Main</bibkey>
   </paper>
   <paper id="1035">
        <title>Comparing the Utility of State Features in Spoken Dialogue Using Reinforcement Learning</title>
        <author><first>Joel</first><last>Tetreault</last></author>
        <author><first>Diane</first><last>Litman</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>272&#8211;279</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1035</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>tetreault-litman:2006:HLT-NAACL06-Main</bibkey>
   </paper>
   <paper id="1036">
        <title>Backoff Model Training using Partially Observed Data: Application to Dialog Act Tagging</title>
        <author><first>Gang</first><last>Ji</last></author>
        <author><first>Jeff</first><last>Bilmes</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>280&#8211;287</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1036</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>ji-bilmes:2006:HLT-NAACL06-Main</bibkey>
   </paper>
   <paper id="1037">
        <title>Exploring Syntactic Features for Relation Extraction using a Convolution Tree Kernel</title>
        <author><first>Min</first><last>Zhang</last></author>
        <author><first>Jie</first><last>Zhang</last></author>
        <author><first>Jian</first><last>Su</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>288&#8211;295</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1037</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>zhang-zhang-su:2006:HLT-NAACL06-Main</bibkey>
   </paper>
   <paper id="1038">
        <title>Integrating Probabilistic Extraction Models and Data Mining to Discover Relations and Patterns in Text</title>
        <author><first>Aron</first><last>Culotta</last></author>
        <author><first>Andrew</first><last>McCallum</last></author>
        <author><first>Jonathan</first><last>Betz</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>296&#8211;303</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1038</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>culotta-mccallum-betz:2006:HLT-NAACL06-Main</bibkey>
   </paper>
   <paper id="1039">
        <title>Preemptive Information Extraction using Unrestricted Relation Discovery</title>
        <author><first>Yusuke</first><last>Shinyama</last></author>
        <author><first>Satoshi</first><last>Sekine</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>304&#8211;311</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1039</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>shinyama-sekine:2006:HLT-NAACL06-Main</bibkey>
   </paper>
   <paper id="1040">
        <title>Probabilistic Context-Free Grammar Induction Based on Structural Zeros</title>
        <author><first>Mehryar</first><last>Mohri</last></author>
        <author><first>Brian</first><last>Roark</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>312&#8211;319</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1040</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>mohri-roark:2006:HLT-NAACL06-Main</bibkey>
   </paper>
   <paper id="1041">
        <title>Prototype-Driven Learning for Sequence Models</title>
        <author><first>Aria</first><last>Haghighi</last></author>
        <author><first>Dan</first><last>Klein</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>320&#8211;327</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1041</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>haghighi-klein:2006:HLT-NAACL06-Main</bibkey>
   </paper>
   <paper id="1042">
        <title>Learning Morphological Disambiguation Rules for Turkish</title>
        <author><first>Deniz</first><last>Yuret</last></author>
        <author><first>Ferhan</first><last>Ture</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>328&#8211;334</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1042</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>yuret-ture:2006:HLT-NAACL06-Main</bibkey>
   </paper>
   <paper id="1043">
        <title>Cross-Entropy and Estimation of Probabilistic Context-Free Grammars</title>
        <author><first>Anna</first><last>Corazza</last></author>
        <author><first>Giorgio</first><last>Satta</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>335&#8211;342</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1043</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>corazza-satta:2006:HLT-NAACL06-Main</bibkey>
   </paper>
   <paper id="1044">
        <title>Estimation of Consistent Probabilistic Context-free Grammars</title>
        <author><first>Mark-Jan</first><last>Nederhof</last></author>
        <author><first>Giorgio</first><last>Satta</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>343&#8211;350</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1044</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>nederhof-satta:2006:HLT-NAACL06-Main</bibkey>
   </paper>
   <paper id="1045">
        <title>A Better N-Best List: Practical Determinization of Weighted Finite Tree Automata</title>
        <author><first>Jonathan</first><last>May</last></author>
        <author><first>Kevin</first><last>Knight</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>351&#8211;358</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1045</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>may-knight:2006:HLT-NAACL06-Main</bibkey>
   </paper>
   <paper id="1046">
        <title>Aggregation via Set Partitioning for Natural Language Generation</title>
        <author><first>Regina</first><last>Barzilay</last></author>
        <author><first>Mirella</first><last>Lapata</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>359&#8211;366</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1046</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>barzilay-lapata:2006:HLT-NAACL06-Main</bibkey>
   </paper>
   <paper id="1047">
        <title>Incorporating Speaker and Discourse Features into Speech Summarization</title>
        <author><first>Gabriel</first><last>Murray</last></author>
        <author><first>Steve</first><last>Renals</last></author>
        <author><first>Jean</first><last>Carletta</last></author>
        <author><first>Johanna</first><last>Moore</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>367&#8211;374</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1047</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>murray-EtAl:2006:HLT-NAACL06-Main</bibkey>
   </paper>
   <paper id="1048">
        <title>Nuggeteer: Automatic Nugget-Based Evaluation using Descriptions and Judgements</title>
        <author><first>Gregory</first><last>Marton</last></author>
        <author><first>Alexey</first><last>Radul</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>375&#8211;382</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1048</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>marton-radul:2006:HLT-NAACL06-Main</bibkey>
   </paper>
   <paper id="1049">
        <title>Will Pyramids Built of Nuggets Topple Over?</title>
        <author><first>Jimmy</first><last>Lin</last></author>
        <author><first>Dina</first><last>Demner-Fushman</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>383&#8211;390</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1049</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>lin-demnerfushman:2006:HLT-NAACL06-Main</bibkey>
   </paper>
   <paper id="1050">
        <title>Creating a Test Collection for Citation-based IR Experiments</title>
        <author><first>Anna</first><last>Ritchie</last></author>
        <author><first>Simone</first><last>Teufel</last></author>
        <author><first>Stephen</first><last>Robertson</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>391&#8211;398</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1050</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>ritchie-teufel-robertson:2006:HLT-NAACL06-Main</bibkey>
   </paper>
   <paper id="1051">
        <title>A Machine Learning based Approach to Evaluating Retrieval Systems</title>
        <author><first>Huyen-Trang</first><last>Vu</last></author>
        <author><first>Patrick</first><last>Gallinari</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>399&#8211;406</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1051</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>vu-gallinari:2006:HLT-NAACL06-Main</bibkey>
   </paper>
   <paper id="1052">
        <title>Language Model Information Retrieval with Document Expansion</title>
        <author><first>Tao</first><last>Tao</last></author>
        <author><first>Xuanhui</first><last>Wang</last></author>
        <author><first>Qiaozhu</first><last>Mei</last></author>
        <author><first>ChengXiang</first><last>Zhai</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>407&#8211;414</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1052</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>tao-EtAl:2006:HLT-NAACL06-Main</bibkey>
   </paper>
   <paper id="1053">
        <title>Towards Spoken-Document Retrieval for the Internet: Lattice Indexing For Large-Scale Web-Search Architectures</title>
        <author><first>Zheng-Yu</first><last>Zhou</last></author>
        <author><first>Peng</first><last>Yu</last></author>
        <author><first>Ciprian</first><last>Chelba</last></author>
        <author><first>Frank</first><last>Seide</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>415&#8211;422</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1053</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>zhou-EtAl:2006:HLT-NAACL06-Main1</bibkey>
   </paper>
   <paper id="1054">
        <title>A fast finite-state relaxation method for enforcing global constraints on sequence decoding</title>
        <author><first>Roy</first><last>Tromble</last></author>
        <author><first>Jason</first><last>Eisner</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>423&#8211;430</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1054</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>tromble-eisner:2006:HLT-NAACL06-Main</bibkey>
   </paper>
   <paper id="1055">
        <title>Semantic role labeling of nominalized predicates in Chinese</title>
        <author><first>Nianwen</first><last>Xue</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>431&#8211;438</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1055</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>xue:2006:HLT-NAACL06-Main</bibkey>
   </paper>
   <paper id="1056">
        <title>Learning for Semantic Parsing with Statistical Machine Translation</title>
        <author><first>Yuk Wah</first><last>Wong</last></author>
        <author><first>Raymond</first><last>Mooney</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>439&#8211;446</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1056</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>wong-mooney:2006:HLT-NAACL06-Main</bibkey>
   </paper>
   <paper id="1057">
        <title>ParaEval: Using Paraphrases to Evaluate Summaries Automatically</title>
        <author><first>Liang</first><last>Zhou</last></author>
        <author><first>Chin-Yew</first><last>Lin</last></author>
        <author><first>Dragos Stefan</first><last>Munteanu</last></author>
        <author><first>Eduard</first><last>Hovy</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>447&#8211;454</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1057</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>zhou-EtAl:2006:HLT-NAACL06-Main2</bibkey>
   </paper>
   <paper id="1058">
        <title>Paraphrasing for Automatic Evaluation</title>
        <author><first>David</first><last>Kauchak</last></author>
        <author><first>Regina</first><last>Barzilay</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>455&#8211;462</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1058</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>kauchak-barzilay:2006:HLT-NAACL06-Main</bibkey>
   </paper>
   <paper id="1059">
        <title>An Information-Theoretic Approach to Automatic Evaluation of Summaries</title>
        <author><first>Chin-Yew</first><last>Lin</last></author>
        <author><first>Guihong</first><last>Cao</last></author>
        <author><first>Jianfeng</first><last>Gao</last></author>
        <author><first>Jian-Yun</first><last>Nie</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>463&#8211;470</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1059</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>lin-EtAl:2006:HLT-NAACL06-Main</bibkey>
   </paper>
   <paper id="1060">
        <title>Cross Linguistic Name Matching in English and Arabic</title>
        <author><first>Andrew</first><last>Freeman</last></author>
        <author><first>Sherri</first><last>Condon</last></author>
        <author><first>Christopher</first><last>Ackerman</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>471&#8211;478</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1060</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>freeman-condon-ackerman:2006:HLT-NAACL06-Main</bibkey>
   </paper>
   <paper id="1061">
        <title>Language Model-Based Document Clustering Using Random Walks</title>
        <author><first>Gunes</first><last>Erkan</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>479&#8211;486</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1061</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>erkan:2006:HLT-NAACL06-Main</bibkey>
   </paper>
   <paper id="1062">
        <title>Unlimited vocabulary speech recognition for agglutinative languages</title>
        <author><first>Mikko</first><last>Kurimo</last></author>
        <author><first>Antti</first><last>Puurula</last></author>
        <author><first>Ebru</first><last>Arisoy</last></author>
        <author><first>Vesa</first><last>Siivola</last></author>
        <author><first>Teemu</first><last>Hirsim&auml;ki</last></author>
        <author><first>Janne</first><last>Pylkk&ouml;nen</last></author>
        <author><first>Tanel</first><last>Alum&auml;e</last></author>
        <author><first>Murat</first><last>Saraclar</last></author>
        <booktitle>Proceedings of the Human Language Technology Conference of the NAACL, Main Conference</booktitle>
        <month>June</month>
        <year>2006</year>
        <address>New York City, USA</address>
        <publisher>Association for Computational Linguistics</publisher>
        <pages>487&#8211;494</pages>
        <url>http://www.aclweb.org/anthology/N/N06/N06-1062</url>
        <bibtype>inproceedings</bibtype>
        <bibkey>kurimo-EtAl:2006:HLT-NAACL06-Main</bibkey>
   </paper>
 </volume>
