Nilo Pedrazzini


2024

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Mapping ‘when’-clauses in Latin American and Caribbean languages: an experiment in subtoken-based typology
Nilo Pedrazzini
Proceedings of the 4th Workshop on Natural Language Processing for Indigenous Languages of the Americas (AmericasNLP 2024)

Languages can encode temporal subordination lexically, via subordinating conjunctions, and morphologically, by marking the relation on the predicate. Systematic cross-linguistic variation among the former can be studied using well-established token-based typological approaches to token-aligned parallel corpora. Variation among different morphological means is instead much harder to tackle and therefore more poorly understood, despite being predominant in several language groups. This paper explores variation in the expression of generic temporal subordination (‘when’-clauses) among the languages of Latin America and the Caribbean, where morphological marking is particularly common. It presents probabilistic semantic maps computed on the basis of the languages of the region, thus avoiding bias towards the many world’s languages that exclusively use lexified connectors, incorporating associations between character in/i-grams and English iwhen/i. The approach allows capturing morphological clause-linkage devices in addition to lexified connectors, paving the way for larger-scale, strategy-agnostic analyses of typological variation in temporal subordination.

2023

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Evaluation of Distributional Semantic Models of Ancient Greek: Preliminary Results and a Road Map for Future Work
Silvia Stopponi | Nilo Pedrazzini | Saskia Peels | Barbara McGillivray | Malvina Nissim
Proceedings of the Ancient Language Processing Workshop

We evaluate four count-based and predictive distributional semantic models of Ancient Greek against AGREE, a composite benchmark of human judgements, to assess their ability to retrieve semantic relatedness. On the basis of the observations deriving from the analysis of the results, we design a procedure for a larger-scale intrinsic evaluation of count-based and predictive language models, including syntactic embeddings. We also propose possible ways of exploiting the different layers of the whole AGREE benchmark (including both human- and machine-generated data) and different evaluation metrics.

2022

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Machines in the media: semantic change in the lexicon of mechanization in 19th-century British newspapers
Nilo Pedrazzini | Barbara McGillivray
Proceedings of the 2nd International Workshop on Natural Language Processing for Digital Humanities

The industrialization process associated with the so-called Industrial Revolution in 19th-century Great Britain was a time of profound changes, including in the English lexicon. An important yet understudied phenomenon is the semantic shift in the lexicon of mechanisation. In this paper we present the first large-scale analysis of terms related to mechanization over the course of the 19th-century in English. We draw on a corpus of historical British newspapers comprising 4.6 billion tokens and train historical word embedding models. We test existing semantic change detection techniques and analyse the results in light of previous historical linguistic scholarship.