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With the dawn of the Big Data era, data sets are growing rapidly. Data is streaming from everywhere - from cameras, mobile phones, cars, and other electronic devices. Clustering streaming data is a very challenging problem. Unlike the…

Machine Learning · Computer Science 2019-02-08 Shlomo Bugdary , Shay Maymon

Clustering is a fundamental tool for analyzing large data sets. A rich body of work has been devoted to designing data-stream algorithms for the relevant optimization problems such as $k$-center, $k$-median, and $k$-means. Such algorithms…

Data Structures and Algorithms · Computer Science 2018-12-06 Kook Jin Ahn , Graham Cormode , Sudipto Guha , Andrew McGregor , Anthony Wirth

We present a method for the classification of multi-labelled text documents explicitly designed for data stream applications that require to process a virtually infinite sequence of data using constant memory and constant processing time.…

Artificial Intelligence · Computer Science 2016-04-13 Ricardo Ñanculef , Ilias Flaounas , Nello Cristianini

We experiment with two recent contextualized word embedding methods (ELMo and BERT) in the context of open-domain argument search. For the first time, we show how to leverage the power of contextualized word embeddings to classify and…

Computation and Language · Computer Science 2019-06-25 Nils Reimers , Benjamin Schiller , Tilman Beck , Johannes Daxenberger , Christian Stab , Iryna Gurevych

We propose a novel agglomerative clustering method based on unmasking, a technique that was previously used for authorship verification of text documents and for abnormal event detection in videos. In order to join two clusters, we…

Computer Vision and Pattern Recognition · Computer Science 2019-05-03 Mariana-Iuliana Georgescu , Radu Tudor Ionescu

Compression-based dissimilarities (CD) offer a flexible and domain-agnostic means of measuring similarity by identifying implicit information through redundancies between data objects. However, as similarity features are derived from the…

Machine Learning · Computer Science 2026-05-13 Guillermo Sarasa , Ana Granados , Francisco de Borja Rodríguez

Text extraction is a highly subjective problem which depends on the dataset that one is working on and the kind of summarization details that needs to be extracted out. All the steps ranging from preprocessing of the data, to the choice of…

Information Retrieval · Computer Science 2024-02-07 Shreyash Rawat , V. Vijayarajan , V. B. Surya Prasath

Text clustering is an important method for organising the increasing volume of digital content, aiding in the structuring and discovery of hidden patterns in uncategorised data. The effectiveness of text clustering largely depends on the…

Computation and Language · Computer Science 2024-12-06 Alina Petukhova , João P. Matos-Carvalho , Nuno Fachada

Recent studies of large-scale contrastive pretraining in the text embedding domain show that using single-source minibatches, rather than mixed-source minibatches, can substantially improve overall model accuracy. In this work, we explore…

Machine Learning · Computer Science 2024-07-29 Luke Merrick

Contextual large language model embeddings are increasingly utilized for topic modeling and clustering. However, current methods often scale poorly, rely on opaque similarity metrics, and struggle in multilingual settings. In this work, we…

Computation and Language · Computer Science 2025-06-03 Hans W. A. Hanley , Zakir Durumeric

Clustering of data points in metric space is among the most fundamental problems in computer science with plenty of applications in data mining, information retrieval and machine learning. Due to the necessity of clustering of large…

Data Structures and Algorithms · Computer Science 2019-10-03 Hossein Esfandiari , Vahab Mirrokni , Peilin Zhong

Topic modeling is a powerful technique to discover hidden topics and patterns within a collection of documents without prior knowledge. Traditional topic modeling and clustering-based techniques encounter challenges in capturing contextual…

Computation and Language · Computer Science 2024-10-04 Melkamu Abay Mersha , Mesay Gemeda yigezu , Jugal Kalita

We propose a novel clustering pipeline to detect and characterize influence campaigns from documents. This approach clusters parts of document, detects clusters that likely reflect an influence campaign, and then identifies documents linked…

Computation and Language · Computer Science 2024-04-30 Zhengxiang Wang , Owen Rambow

There has been a significant effort by the research community to address the problem of providing methods to organize documentation with the help of information Retrieval methods. In this report paper, we present several experiments with…

Information Retrieval · Computer Science 2022-06-07 Rui Portocarrero Sarmento , Douglas O. Cardoso , João Gama , Pavel Brazdil

Topic models are a useful analysis tool to uncover the underlying themes within document collections. The dominant approach is to use probabilistic topic models that posit a generative story, but in this paper we propose an alternative way…

Computation and Language · Computer Science 2020-10-08 Suzanna Sia , Ayush Dalmia , Sabrina J. Mielke

People are always in search of matters for which they are prone to use internet, but again it has huge assemblage of data due to which it becomes difficult for the reader to get the most accurate data. To make it easier for people to gather…

Information Retrieval · Computer Science 2015-04-07 Monica Jha

Clustering using neural networks has recently demonstrated promising performance in machine learning and computer vision applications. However, the performance of current approaches is limited either by unsupervised learning or their…

Machine Learning · Computer Science 2018-07-11 Ankita Shukla , Gullal Singh Cheema , Saket Anand

Nowadays, document clustering is considered as a data intensive task due to the dramatic, fast increase in the number of available documents. Nevertheless, the features that represent those documents are also too large. The most common…

Databases · Computer Science 2015-05-13 Abdelrahman Elsayed , Hoda M. O. Mokhtar , Osama Ismail

Embedding news articles is a crucial tool for multiple fields, such as media bias detection, identifying fake news, and making news recommendations. However, existing news embedding methods are not optimized to capture the latent context of…

Computation and Language · Computer Science 2026-04-22 Koren Ishlach , Itzhak Ben-David , Michael Fire , Lior Rokach

This work combines algorithms based on word embeddings, dimensionality reduction, and clustering. The objective is to obtain topics from a set of unclassified texts. The algorithm to obtain the word embeddings is the BERT model, a neural…

Computation and Language · Computer Science 2023-12-08 Diego Saldaña Ulloa