1,720,968 research outputs found
A diachronic Italian corpus based on “L’Unità”
Full text linkIn this paper, we describe the creation of a diachronic corpus for Italian by exploiting the digital archive of the newspaper “L’Unità”. We automatically clean and annotate the corpus with PoS tags, lemmas, named entities and syntactic dependencies. Moreover, we compute frequency-based time series for tokens, lemmas and entities. We show some interesting corpus statistics taking into account the temporal dimension and describe some examples of usage of time series
A New Time-sensitive Model of Linguistic Knowledge for Graph Databases
No full textGraph databases are a straightforward technology for storing knowledge graphs. However, they are schema-less. We apply the GraphBRAIN Schema (GBS) format to describe Time-sensitive Linguistic Knowledge in a graph database (Neo4j). Our schema can model relations between concepts and words, information about word occurrences, and diachronic information about concepts and words. This paper introduces GraphBRAIN technology and describes our model for time-sensitive linguistic data. Moreover, we provide an example of usage and show the potential of this model for humanities and cultural heritage research
Analysis of lexical semantic changes in corpora with the diachronic engine
Full text linkWith the growing availability of digitized diachronic corpora, the need for tools capable of taking into account the diachronic component of corpora becomes ever more pressing. Recent works on diachronic embeddings show that computational approaches to the diachronic analysis of language seem to be promising, but they are not user friendly for people without a technical background. This paper presents the Diachronic Engine, a system for the diachronic analysis of corpora lexical features. Diachronic Engine computes word frequency, concordances and collocations taking into account the temporal dimension. It is also able to compute temporal word embeddings and time-series that can be exploited for lexical semantic change detection
A comparative study of approaches for the diachronic analysis of the Italian language
Full text linkIn recent years, there has been a significant increase in interest in lexical semantic change detection. Many are the existing approaches, data used, and evaluation strategies to detect semantic drift. Most of those approaches rely on diachronic word embeddings. Some of them are created as post-processing of static word embeddings, while others produce dynamic word embeddings where vectors share the same geometric space for all time slices. The large majority of the methods use English as the target language for the diachronic analysis, while other languages remain under-explored. In this work, we compare state-of-the-art approaches in computational historical linguistics to evaluate the pros and cons of each model, and we present the results of an in-depth analysis conducted using an Italian diachronic corpus. Specifically, several approaches based on both static embeddings and dynamic ones are implemented and evaluated by using the Kronos-It dataset. We train all word embeddings on the Italian Google n-gram corpus. The main result of the evaluation is that all approaches fail to significantly reduce the number of false-positive change points, which confirms that lexical semantic change is still a challenging task
DWUGs-IT: Extending and Standardizing Lexical Semantic Change Detection for Italian
No full textLexical Semantic Change Detection (LSCD) is the task of determining whether a word has undergone a change in meaning over time. There has been a marked increase in interest in this task, accompanied by a corresponding growth in the scientific community involved in developing computational approaches to semantic change. In recent years, a number of resources have been made available for the evaluation of LSC models in a number of languages, including English, Swedish, German, Latin, Russian and Chinese. DIACR-ITA is the only existing resource for LSCD in Italian. However, DIACR-ITA has a different format from that used for other languages. In this paper, we present DWUGs-IT, which extends the DIACR-ITA dataset with additional target words and usage-sense pair annotations and adapts it to the DURel format, including the first implementation of a LSCD graded task for Italian
On the impact of Language Adaptation for Large Language Models: A case study for the Italian language using only open resources
No full textThe BLOOM Large Language Model is a cutting-edge open linguistic model developed to provide computers with natural language understanding skills. Despite its remarkable capabilities in understanding natural language by capturing intricate contextual relationships, the BLOOM model exhibits a notable limitation concerning the number of included languages. In fact, Italian is not included among the languages supported by the model making the usage of the model challenging in this context. Within this study, using an open science philosophy, we explore different Language Adaptation strategies for the BLOOM model and assess its zero-shot prompting performance across two different downstream classification tasks over EVALITA datasets. It has been observed that language adaptation followed by instruction-based fine-tuning is shown to be effective in correctly addressing a task never seen by the model in a new language learned on a few examples of data
DIACR-Ita @ EVALITA2020: Overview of the EVALITA2020 diachronic lexical semantics (DIACR-Ita) task
Full text linkThis paper describes the first edition of the “Diachronic Lexical Semantics” (DIACR-Ita) task at the EVALITA 2020 campaign. The task challenges participants to develop systems that can automatically detect if a given word has changed its meaning over time, given contextual information from corpora. The task, at its first edition, attracted 9 participant teams and collected a total of 36 submission runs
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
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