Agnes Lisowska


pdf bib
Examining the Effects of Rephrasing User Input on Two Mobile Spoken Language Systems
Nikos Tsourakis | Agnes Lisowska | Manny Rayner | Pierrette Bouillon
Proceedings of the Seventh International Conference on Language Resources and Evaluation (LREC'10)

During the construction of a spoken dialogue system much effort is spent on improving the quality of speech recognition as possible. However, even if an application perfectly recognizes the input, its understanding may be far from what the user originally meant. The user should be informed about what the system actually understood so that an error will not have a negative impact in the later stages of the dialogue. One important aspect that this work tries to address is the effect of presenting the system’s understanding during interaction with users. We argue that for specific kinds of applications it’s important to confirm the understanding of the system before obtaining the output. In this way the user can avoid misconceptions and problems occurring in the dialogue flow and he can enhance his confidence in the system. Nevertheless this has an impact on the interaction, as the mental workload increases, and the user’s behavior may adapt to the system’s coverage. We focus on two applications that implement the notion of rephrasing user’s input in a different way. Our study took place among 14 subjects that used both systems on a Nokia N810 Internet Tablet.


pdf bib
Making Speech Look Like Text in the Regulus Development Environment
Elisabeth Kron | Manny Rayner | Marianne Santaholma | Pierrette Bouillon | Agnes Lisowska
Coling 2008: Proceedings of the workshop on Grammar Engineering Across Frameworks


pdf bib
ROTE: A Tool to Support Users in Defining the Relative Importance of Quality Characteristics
Agnes Lisowska | Nancy L. Underwood
Proceedings of the Fifth International Conference on Language Resources and Evaluation (LREC’06)

This paper describes the Relative Ordering Tool for Evaluation (ROTE) which is designed to support the process of building a parameterised quality model for evaluation. It is a very simple tool which enables users to specify the relative importance of quality characteristics (and associated metrics) to reflect the users' particular requirements. The tool allows users to order any number of quality characteristics by comparing them in a pair-wise fashion. The tool was developed in the context of a collaborative project developing a text mining system. A full scale evaluation of the text mining system was designed and executed for three different users and the ROTE tool was successfully applied by those users during that process. The tool will be made available for general use by the evaluation community.

pdf bib
Extending the Wizard of Oz Methodologie for Multimodal Language-enabled Systems
Martin Rajman | Marita Ailomaa | Agnes Lisowska | Miroslav Melichar | Susan Armstrong
Proceedings of the Fifth International Conference on Language Resources and Evaluation (LREC’06)

In this paper we present a proposal for extending the standard Wizard of Oz experimental methodology to language-enabled multimodal systems. We first discuss how Wizard of Oz experiments involving multimodal systems differ from those involving voice-only systems. We then go on to discuss the Extended Wizard of Oz methodology and the Wizard of Oz testing environment and protocol that we have developed. We then describe an example of applying this methodology to Archivus, a multimodal system for multimedia meeting retrieval and browsing. We focus in particular on the tools that the wizards would need to successfully and efficiently perform their tasks in a multimodal context. We conclude with some general comments about which questions need to be addressed when developing and using the Wizard of Oz methodology for testing multimodal systems.

pdf bib
The Evolution of an Evaluation Framework for a Text Mining System
Nancy L. Underwood | Agnes Lisowska
Proceedings of the Fifth International Conference on Language Resources and Evaluation (LREC’06)

The Parmenides project developed a text mining application applied in three different domains exemplified by case studies for the three user partners in the project. During the lifetime of the project (and in parallel with the development of the system itself) an evaluation framework was developed by the authors in conjunction with the users, and was eventually applied to the system. The object of the exercise was two-fold: firstly to develop and perform a complete user-centered evaluation of the system to assess how well it answered the users' requirements and, secondly, to develop a general framework which could be applied in the context of other users' requirements and (with some modification) to similar systems. In this paper we describe not only the framework but the process of building and parameterising the quality model for each case study and, perhaps most interestingly, the way in which the quality model and users' requirements and expectations evolved over time.

pdf bib
Archivus: A Multimodal System for Multimedia Meeting Browsing and Retrieval
Marita Ailomaa | Miroslav Melichar | Agnes Lisowska | Martin Rajman | Susan Armstrong
Proceedings of the COLING/ACL 2006 Interactive Presentation Sessions


pdf bib
User Query Analysis for the Specification and Evaluation of a Dialogue Processing and Retrieval System
Agnes Lisowska | Andrei Popescu-Belis | Susan Armstrong
Proceedings of the Fourth International Conference on Language Resources and Evaluation (LREC’04)