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Though languages can evolve slowly, they can also react strongly to dramatic world events. By studying the connection between words and events, it is possible to identify which events change our vocabulary and in what way. In this work, we…

Computation and Language · Computer Science 2019-09-24 Guy D. Rosin , Kira Radinsky

There is an escalating need for methods to identify latent patterns in text data from many domains. We introduce a new method to identify topics in a corpus and represent documents as topic sequences. Discourse Atom Topic Modeling draws on…

Computation and Language · Computer Science 2022-10-06 Alina Arseniev-Koehler , Susan D. Cochran , Vickie M. Mays , Kai-Wei Chang , Jacob Gates Foster

This paper studies the content of central bank speech communication from 1997 through 2020 and asks the following questions: (i) What global topics do central banks talk about? (ii) How do these topics evolve over time? I turn to natural…

General Economics · Economics 2021-09-22 Magnus Hansson

Climate change poses an urgent global threat, needing the rapid identification and deployment of innovative solutions. We hypothesise that many of these solutions already exist within scientific literature but remain underutilised. To…

We propose a topic-dependent attention model for sentiment classification and topic extraction. Our model assumes that a global topic embedding is shared across documents and employs an attention mechanism to derive local topic embedding…

Computation and Language · Computer Science 2019-08-20 Gabriele Pergola , Lin Gui , Yulan He

We present a novel combination of dynamic embedded topic models and change-point detection to explore diachronic change of lexical semantic modality in classical and early Christian Latin. We demonstrate several methods for finding and…

Computation and Language · Computer Science 2024-01-26 Hale Sirin , Tom Lippincott

The present study proposes a novel method of trend detection and visualization - more specifically, modeling the change in a topic over time. Where current models used for the identification and visualization of trends only convey the…

Computation and Language · Computer Science 2023-09-19 Angad Sandhu , Aneesh Edara , Vishesh Narayan , Faizan Wajid , Ashok Agrawala

Tracking and collecting fast-evolving online discussions provides vast data for studying social media usage and its role in people's public lives. However, collecting social media data using a static set of keywords fails to satisfy the…

Social and Information Networks · Computer Science 2021-02-26 Maya Srikanth , Anqi Liu , Nicholas Adams-Cohen , Jian Cao , R. Michael Alvarez , Anima Anandkumar

Certain type of documents such as tweets are collected by specifying a set of keywords. As topics of interest change with time it is beneficial to adjust keywords dynamically. The challenge is that these need to be specified ahead of…

Machine Learning · Statistics 2020-01-23 Xingyu Wang , Lida Zhang , Diego Klabjan

Topic modeling is a well-established technique for exploring text corpora. Conventional topic models (e.g., LDA) represent topics as bags of words that often require "reading the tea leaves" to interpret; additionally, they offer users…

Computation and Language · Computer Science 2024-04-03 Chau Minh Pham , Alexander Hoyle , Simeng Sun , Philip Resnik , Mohit Iyyer

This study addresses the challenges of analyzing temporal discrepancies in large language models (LLMs) trained on data from different time periods. To facilitate the automatic exploration of these differences, we propose a novel system…

Information Retrieval · Computer Science 2024-10-08 Reinhard Friedrich Fritsch , Adam Jatowt

Climate change impacts a broad spectrum of human resources and activities, necessitating the use of climate models to project long-term effects and inform mitigation and adaptation strategies. These models generate multiple datasets by…

In this paper, we propose a novel online topic tracking framework, named IEDL, for tracking the topic changes related to deep learning techniques on Stack Exchange and automatically interpreting each identified topic. The proposed framework…

Information Retrieval · Computer Science 2019-07-04 Fenglei Jin , Cuiyun Gao , Michael R. Lyu

As artificial intelligence (AI) continues to rapidly evolve, the realm of Earth and atmospheric sciences is increasingly adopting data-driven models, powered by progressive developments in deep learning (DL). Specifically, DL techniques are…

Machine Learning · Computer Science 2023-12-07 Shengchao Chen , Guodong Long , Jing Jiang , Dikai Liu , Chengqi Zhang

Over the years, topic models have provided an efficient way of extracting insights from text. However, while many models have been proposed, none are able to model topic temporality and hierarchy jointly. Modelling time provide more precise…

Information Retrieval · Computer Science 2023-01-25 Judicael Poumay , Ashwin Ittoo

The automatic generation of decision trees based on off-line reasoning on models of a domain is a reasonable compromise between the advantages of using a model-based approach in technical domains and the constraints imposed by embedded…

Artificial Intelligence · Computer Science 2011-06-28 L. Console , C. Picardi , D. Theseider Duprè

Topic modeling is a widely used technique for uncovering thematic structures from large text corpora. However, most topic modeling approaches e.g. Latent Dirichlet Allocation (LDA) struggle to capture nuanced semantics and contextual…

Information Retrieval · Computer Science 2024-09-25 Satya Kapoor , Alex Gil , Sreyoshi Bhaduri , Anshul Mittal , Rutu Mulkar

Modeling topics effectively in short texts, such as tweets and news snippets, is crucial to capturing rapidly evolving social trends. Existing topic models often struggle to accurately capture the underlying semantic patterns of short…

Computation and Language · Computer Science 2025-02-18 Shuyu Chang , Rui Wang , Peng Ren , Qi Wang , Haiping Huang

Dialogue related Machine Reading Comprehension requires language models to effectively decouple and model multi-turn dialogue passages. As a dialogue development goes after the intentions of participants, its topic may not keep constant…

Computation and Language · Computer Science 2023-09-19 Xinbei Ma , Yi Xu , Hai Zhao , Zhuosheng Zhang

Text data is inherently temporal. The meaning of words and phrases changes over time, and the context in which they are used is constantly evolving. This is not just true for social media data, where the language used is rapidly influenced…

Computation and Language · Computer Science 2025-03-05 Kai-Robin Lange , Niklas Benner , Lars Grönberg , Aymane Hachcham , Imene Kolli , Jonas Rieger , Carsten Jentsch