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Answering real-world complex queries, such as complex product search, often requires accurate retrieval from semi-structured knowledge bases that involve blend of unstructured (e.g., textual descriptions of products) and structured (e.g.,…

Efficiently retrieving relevant data from massive Internet of Things (IoT) networks is essential for downstream tasks such as machine learning. This paper addresses this challenge by proposing a novel data sourcing protocol that combines…

Information Theory · Computer Science 2025-09-12 Anders E. Kalør , Petar Popovski , Kaibin Huang

Centralized search engines are key for the Internet, but lead to undesirable concentration of power. Decentralized alternatives fail to offer equal document retrieval accuracy and speed. Nevertheless, Semantic Overlay Networks can come…

Information Retrieval · Computer Science 2025-02-19 Petru Neague , Quinten Stokkink , Naman Goel , Johan Pouwelse

Modern recommender systems perform large-scale retrieval by first embedding queries and item candidates in the same unified space, followed by approximate nearest neighbor search to select top candidates given a query embedding. In this…

Thinking of todays web search scenario which is mainly keyword based, leads to the need of effective and meaningful search provided by Semantic Web. Existing search engines are vulnerable to provide relevant answers to users query due to…

Information Retrieval · Computer Science 2013-11-26 Debajyoti Mukhopadhyay , Manoj Sharma , Gajanan Joshi , Trupti Pagare , Adarsha Palwe

Genuine spatial reasoning relies on the capacity to construct and manipulate coherent internal spatial representations, often conceptualized as mental models, rather than merely processing surface linguistic associations. While large…

Artificial Intelligence · Computer Science 2026-03-04 Peiyao Jiang , Zequn Qin , Xi Li

Keyword extraction is the process of identifying the words or phrases that express the main concepts of text to the best of one's ability. Electronic infrastructure creates a considerable amount of text every day and at all times. This…

Computation and Language · Computer Science 2021-10-04 Aidin Zehtab-Salmasi , Mohammad-Reza Feizi-Derakhshi , Mohamad-Ali Balafar

Visual localization is a useful alternative to standard localization techniques. It works by utilizing cameras. In a typical scenario, features are extracted from captured images and compared with geo-referenced databases. Location…

Computer Vision and Pattern Recognition · Computer Science 2020-06-28 Li Weng , Valerie Gouet-Brunet , Bahman Soheilian

Our goal is to answer real-world tourism questions that seek Points-of-Interest (POI) recommendations. Such questions express various kinds of spatial and non-spatial constraints, necessitating a combination of textual and spatial…

Artificial Intelligence · Computer Science 2021-06-08 Danish Contractor , Shashank Goel , Mausam , Parag Singla

Recent studies on scaling up ranking models have achieved substantial improvement for recommendation systems and search engines. However, most large-scale ranking systems rely on item IDs, where each item is treated as an independent…

Information Retrieval · Computer Science 2026-02-02 Zhen Zhao , Tong Zhang , Jie Xu , Qingliang Cai , Qile Zhang , Leyuan Yang , Daorui Xiao , Xiaojia Chang

Autonomous navigation in unfamiliar environments often relies on geometric mapping and planning strategies that overlook rich semantic cues such as signs, room numbers, and textual labels. We propose a novel semantic navigation framework…

Robotics · Computer Science 2026-01-13 Jing Cao , Nishanth Kumar , Aidan Curtis

Named entities have been considered and combined with keywords to enhance information retrieval performance. However, there is not yet a formal and complete model that takes into account entity names, classes, and identifiers together. Our…

Information Retrieval · Computer Science 2018-07-24 Tru H. Cao , Khanh C. Le , Vuong M. Ngo

Due to the difficulty of automatically mapping visual features with semantic descriptors, state-of-the-art frameworks have exhibited poor performance in terms of coverage and effectiveness for indexing the visual content. This prompted us…

Multimedia · Computer Science 2020-04-28 M. Belkhatir

Because of the data deluge in scientific publication, finding relevant information is getting harder and harder for researchers and readers. Building an enhanced scientific search engine by taking semantic relations into account poses a…

Information Retrieval · Computer Science 2017-09-29 Bastien Latard , Jonathan Weber , Germain Forestier , Michel Hassenforder

Humans possess spatial reasoning abilities that enable them to understand spaces through multimodal observations, such as vision and sound. Large multimodal reasoning models extend these abilities by learning to perceive and reason, showing…

Synonymous keyword retrieval has become an important problem for sponsored search ever since major search engines relax the exact match product's matching requirement to a synonymous level. Since the synonymous relations between queries and…

Information Retrieval · Computer Science 2021-05-27 Yijiang Lian , Shuang Li , Chaobing Feng , YanFeng Zhu

Living in the era of data deluge, we have witnessed a web content explosion, largely due to the massive availability of User-Generated Content (UGC). In this work, we specifically consider the problem of geospatial information extraction…

Databases · Computer Science 2013-11-21 Georgios Skoumas , Dieter Pfoser , Anastasios Kyrillidis

Time is an important relevance signal when searching streams of social media posts. The distribution of document timestamps from the results of an initial query can be leveraged to infer the distribution of relevant documents, which can…

Information Retrieval · Computer Science 2017-07-26 Jinfeng Rao , Hua He , Haotian Zhang , Ferhan Ture , Royal Sequiera , Salman Mohammed , Jimmy Lin

The semantic information regulates the expressiveness of a web service. State-of-the-art approaches in web services research have used the semantics of a web service for different purposes, mainly for service discovery, composition,…

Artificial Intelligence · Computer Science 2019-03-21 Soumi Chattopadhyay , Ansuman Banerjee
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