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Indexing the Web is becoming a laborious task for search engines as the Web exponentially grows in size and distribution. Presently, the most effective known approach to overcome this problem is the use of focused crawlers. A focused…

Information Retrieval · Computer Science 2015-10-02 Ali Seyfi

A focused crawler traverses the web selecting out relevant pages to a predefined topic and neglecting those out of concern. While surfing the internet it is difficult to deal with irrelevant pages and to predict which links lead to quality…

Information Retrieval · Computer Science 2009-06-30 Anshika Pal , Deepak Singh Tomar , S. C. Shrivastava

Majority of the computer or mobile phone enthusiasts make use of the web for searching activity. Web search engines are used for the searching; The results that the search engines get are provided to it by a software module known as the Web…

Information Retrieval · Computer Science 2014-11-18 Prashant Dahiwale , M M Raghuwanshi , Latesh malik

A focused crawler aims at discovering as many web pages and web sites relevant to a target topic as possible, while avoiding irrelevant ones. Reinforcement Learning (RL) has been a promising direction for optimizing focused crawling,…

Information Retrieval · Computer Science 2025-05-20 Andreas Kontogiannis , Dimitrios Kelesis , Vasilis Pollatos , George Giannakopoulos , Georgios Paliouras

Getting informed of what is registered in the Web space on time, can greatly help the psychologists, marketers and political analysts to familiarize, analyse, make decision and act correctly based on the society`s different needs. The great…

Information Retrieval · Computer Science 2012-02-10 Mehdi Naghavi , Mohsen Sharifi

Given the vast scale of the Web, crawling prioritisation techniques based on link graph traversal, popularity, link analysis, and textual content are frequently applied to surface documents that are most likely to be valuable. While…

Information Retrieval · Computer Science 2025-07-03 Francesca Pezzuti , Sean MacAvaney , Nicola Tonellotto

Crawling parallel texts -- texts that are mutual translations -- from the Internet is usually done following a brute-force approach: documents are massively downloaded in an unguided process, and only a fraction of them end up leading to…

Computation and Language · Computer Science 2026-04-22 Cristian García-Romero , Miquel Esplà-Gomis , Felipe Sánchez-Martínez

Crawler-based search engines are the mostly used search engines among web and Internet users, involve web crawling, storing in database, ranking, indexing and displaying to the user. But it is noteworthy that because of increasing changes…

Information Retrieval · Computer Science 2013-05-14 Ali Tourani , Amir Seyed Danesh

Publicly available information contains valuable information for Cyber Threat Intelligence (CTI). This can be used to prevent attacks that have already taken place on other systems. Ideally, only the initial attack succeeds and all…

Cryptography and Security · Computer Science 2025-03-25 Philipp Kuehn , Mike Schmidt , Markus Bayer , Christian Reuter

Journalistic fact-checking, as well as social or economic research, require analyzing high-quality statistics datasets (SDs, in short). However, retrieving SD corpora at scale may be hard, inefficient, or impossible, depending on how they…

Information Retrieval · Computer Science 2026-02-13 Antoine Gauquier , Ioana Manolescu , Pierre Senellart

This presentation focuses on the importance of web crawling and page ranking algorithms in dealing with the massive amount of data present on the World Wide Web. As the web continues to grow exponentially, efficient search and retrieval…

Information Retrieval · Computer Science 2023-06-22 Nithin T K , Chandana S , Barani G , Chavva Dharani , M S Karishma

Can a Web crawler efficiently locate an unknown relevant page? While this question is receiving much empirical attention due to its considerable commercial value in the search engine community [Cho98,Chakrabarti99,Menczer00,Menczer01],…

Information Retrieval · Computer Science 2007-05-23 Filippo Menczer

With the rapid advance of the Internet, search engines (e.g., Google, Bing, Yahoo!) are used by billions of users for each day. The main function of a search engine is to locate the most relevant webpages corresponding to what the user…

Applications · Statistics 2018-03-15 Xinzhi Han , Sen Lei

A hypergraph is a useful combinatorial object to model ternary or higher-order relations among entities. Clustering hypergraphs is a fundamental task in network analysis. In this study, we develop two clustering algorithms based on…

Data Structures and Algorithms · Computer Science 2021-10-27 Yuuki Takai , Atsushi Miyauchi , Masahiro Ikeda , Yuichi Yoshida

A web crawler is a system designed to collect web pages, and efficient crawling of new pages requires appropriate algorithms. While website features such as XML sitemaps and the frequency of past page updates provide important clues for…

Information Retrieval · Computer Science 2025-05-13 Yuichi Sasazawa , Yasuhiro Sogawa

Dark web crawling is a complex process that involves specific methodologies and techniques to navigate the Tor network and extract data from hidden services. This study proposes a general dark web crawler designed to extract pages handling…

Cryptography and Security · Computer Science 2024-05-13 Daniel De Pascale , Giuseppe Cascavilla , Damian A. Tamburri , Willem-Jan Van Den Heuvel

The clear, social, and dark web have lately been identified as rich sources of valuable cyber-security information that -given the appropriate tools and methods-may be identified, crawled and subsequently leveraged to actionable…

Cryptography and Security · Computer Science 2021-09-16 Paris Koloveas , Thanasis Chantzios , Christos Tryfonopoulos , Spiros Skiadopoulos

Nowadays, more and more people use the Web as their primary source of up-to-date information. In this context, fast crawling and indexing of newly created Web pages has become crucial for search engines, especially because user traffic to a…

Information Retrieval · Computer Science 2013-07-25 Damien Lefortier , Liudmila Ostroumova , Egor Samosvat , Pavel Serdyukov

In this study, we aim to incorporate the expertise of anonymous curators into a token-curated registry (TCR), a decentralized recommender system for collecting a list of high-quality content. This registry is important, because previous…

Digital Libraries · Computer Science 2020-01-07 Kensuke Ito , Hideyuki Tanaka

In the past few decades, there has been an explosion in the amount of available data produced from various sources with different topics. The availability of this enormous data necessitates us to adopt effective computational tools to…

Computation and Language · Computer Science 2022-12-20 Mina Samizadeh
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