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In this paper we show how the performance of tweet clustering can be improved by leveraging character-based neural networks. The proposed approach overcomes the limitations related to the vocabulary explosion in the word-based models and…

Information Retrieval · Computer Science 2017-03-17 Svitlana Vakulenko , Lyndon Nixon , Mihai Lupu

We propose a method to discover latent topics and visualise large collections of tweets for easy identification and interpretation of topics, and exemplify its use with tweets from a Colombian mass media giant in the period 2014--2019. The…

Social and Information Networks · Computer Science 2023-03-28 Vladimir Vargas-Calderón , Marlon Steibeck Dominguez , N. Parra-A. , Herbert Vinck-Posada , Jorge E. Camargo

Image of an entity can be defined as a structured and dynamic representation which can be extracted from the opinions of a group of users or population. Automatic extraction of such an image has certain importance in political science and…

Information Retrieval · Computer Science 2015-09-25 Md. Abul Hasnat , Julien Velcin , Stéphane Bonnevay , Julien Jacques

Social networks play a fundamental role in propagation of information and news. Characterizing the content of the messages becomes vital for different tasks, like breaking news detection, personalized message recommendation, fake users…

Information Retrieval · Computer Science 2022-01-04 Federico Albanese , Esteban Feuerstein

With the huge upsurge of information in day-to-days life, it has become difficult to assemble relevant information in nick of time. But people, always are in dearth of time, they need everything quick. Hence clustering was introduced to…

Information Retrieval · Computer Science 2015-03-02 Rakesh Chandra Balabantaray , Chandrali Sarma , Monica Jha

The explosive growth of World Wide Web (WWW) has necessitated the development of Web personalization systems in order to understand the user preferences to dynamically serve customized content to individual users. To reveal information…

Databases · Computer Science 2015-09-03 Zahid Ansari , Waseem Ahmed , M. F. Azeem , A. Vinaya Babu

Notwithstanding recent work which has demonstrated the potential of using Twitter messages for content-specific data mining and analysis, the depth of such analysis is inherently limited by the scarcity of data imposed by the 140 character…

Social and Information Networks · Computer Science 2016-11-17 Adham Beykikhoshk , Ognjen Arandjelovic , Dinh Phung , Svetha Venkatesh

This paper is a comparison study in the context of Topic Detection on COVID-19 data. There are various approaches for Topic Detection, among which the Clustering approach is selected in this paper. Clustering requires distance and…

Computation and Language · Computer Science 2021-11-17 Elnaz Zafarani-Moattar , Mohammad Reza Kangavari , Amir Masoud Rahmani

Clustering large, mixed data is a central problem in data mining. Many approaches adopt the idea of k-means, and hence are sensitive to initialisation, detect only spherical clusters, and require a priori the unknown number of clusters. We…

Machine Learning · Statistics 2020-11-13 Joshua Tobin , Mimi Zhang

The unsupervised text clustering is one of the major tasks in natural language processing (NLP) and remains a difficult and complex problem. Conventional \mbox{methods} generally treat this task using separated steps, including text…

Computation and Language · Computer Science 2019-03-25 Jie Zhou , Xingyi Cheng , Jinchao Zhang

Data mining focuses on discovering interesting, non-trivial and meaningful information from large datasets. Data clustering is one of the unsupervised and descriptive data mining task which group data based on similarity features and…

Neural and Evolutionary Computing · Computer Science 2023-05-09 Pitawelayalage Dasun Dileepa Pitawela , Gamage Upeksha Ganegoda

Twitter serves as a data source for many Natural Language Processing (NLP) tasks. It can be challenging to identify topics on Twitter due to continuous updating data stream. In this paper, we present an unsupervised graph based framework to…

Computation and Language · Computer Science 2021-04-19 Xiaonan Jing , Qingyuan Hu , Yi Zhang , Julia Taylor Rayz

Twitter stream has become a large source of information for many people, but the magnitude of tweets and the noisy nature of its content have made harvesting the knowledge from Twitter a challenging task for researchers for a long time.…

Computation and Language · Computer Science 2018-06-21 Øystein Repp , Heri Ramampiaro

We study supervised learning problems using clustering constraints to impose structure on either features or samples, seeking to help both prediction and interpretation. The problem of clustering features arises naturally in text…

Machine Learning · Computer Science 2016-09-20 Vincent Roulet , Fajwel Fogel , Alexandre d'Aspremont , Francis Bach

Vector space representations of words capture many aspects of word similarity, but such methods tend to make vector spaces in which antonyms (as well as synonyms) are close to each other. We present a new signed spectral normalized graph…

Computation and Language · Computer Science 2016-01-21 João Sedoc , Jean Gallier , Lyle Ungar , Dean Foster

Extracting textual features from tweets is a challenging process due to the noisy nature of the content and the weak signal of most of the words used. In this paper, we propose using singular value decomposition (SVD) with clustering to…

Social and Information Networks · Computer Science 2018-07-26 Ahmad Hany Hossny , Terry Moschou , Grant Osborne , Lewis Mitchell , Nick Lothian

In this paper, we present TwiSent, a sentiment analysis system for Twitter. Based on the topic searched, TwiSent collects tweets pertaining to it and categorizes them into the different polarity classes positive, negative and objective.…

Information Retrieval · Computer Science 2012-09-19 Subhabrata Mukherjee , Akshat Malu , A. R. Balamurali , Pushpak Bhattacharyya

City Logistics is characterized by multiple stakeholders that often have different views of such a complex system. From a public policy perspective, identifying stakeholders, issues and trends is a daunting challenge, only partially…

Machine Learning · Computer Science 2019-06-19 Simon Tamayo , François Combes , Gaudron Arthur

Short text stream clustering is an important but challenging task since massive amount of text is generated from different sources such as micro-blogging, question-answering, and social news aggregation websites. One of the major challenges…

Information Retrieval · Computer Science 2021-01-22 Md Rashadul Hasan Rakib , Muhammad Asaduzzaman

Sentiment analysis (or opinion mining) on Twitter data has attracted much attention recently. One of the system's key features, is the immediacy in communication with other users in an easy, user-friendly and fast way. Consequently, people…

Databases · Computer Science 2016-02-04 Nikolaos Nodarakis , Spyros Sioutas , Athanasios Tsakalidis , Giannis Tzimas