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Quality diversity is a recent family of evolutionary search algorithms which focus on finding several well-performing (quality) yet different (diversity) solutions with the aim to maintain an appropriate balance between divergence and…

Neural and Evolutionary Computing · Computer Science 2018-10-25 Daniele Gravina , Antonios Liapis , Georgios N. Yannakakis

Image search engines enable the retrieval of images relevant to a query image. In this work, we consider the setting where a query for similar images is derived from a collection of images. For visual search, the similarity measurements may…

Computer Vision and Pattern Recognition · Computer Science 2023-02-07 Nihal Jain , Praneetha Vaddamanu , Paridhi Maheshwari , Vishwa Vinay , Kuldeep Kulkarni

Recommendation systems capable of providing diverse sets of results are a focus of increasing importance, with motivations ranging from fairness to novelty and other aspects of optimizing user experience. One form of diversity of recent…

Data Structures and Algorithms · Computer Science 2024-07-15 Jon Kleinberg , Emily Ryu , Éva Tardos

Multimodal recommendation systems integrate diverse multimodal information into the feature representations of both items and users, thereby enabling a more comprehensive modeling of user preferences. However, existing methods are hindered…

Multimedia · Computer Science 2025-01-03 Qiya Song , Jiajun Hu , Lin Xiao , Bin Sun , Xieping Gao , Shutao Li

Current top performing object recognition systems build on object proposals as a preprocessing step. Object proposal algorithms are designed to generate candidate regions for generic objects, yet current approaches are limited in capturing…

Computer Vision and Pattern Recognition · Computer Science 2016-03-15 Anton Winschel , Rainer Lienhart , Christian Eggert

Salient object detection is a problem that has been considered in detail and many solutions proposed. In this paper, we argue that work to date has addressed a problem that is relatively ill-posed. Specifically, there is not universal…

Computer Vision and Pattern Recognition · Computer Science 2018-03-26 Md Amirul Islam , Mahmoud Kalash , Neil D. B. Bruce

Recommender systems use data on past user preferences to predict possible future likes and interests. A key challenge is that while the most useful individual recommendations are to be found among diverse niche objects, the most reliably…

Information Retrieval · Computer Science 2010-03-15 Tao Zhou , Zoltan Kuscsik , Jian-Guo Liu , Matus Medo , Joseph R. Wakeling , Yi-Cheng Zhang

We propose a novel measure for template matching named Deformable Diversity Similarity -- based on the diversity of feature matches between a target image window and the template. We rely on both local appearance and geometric information…

Computer Vision and Pattern Recognition · Computer Science 2017-04-19 Itamar Talmi , Roey Mechrez , Lihi Zelnik-Manor

Mining dense subgraphs on multi-layer graphs is an interesting problem, which has witnessed lots of applications in practice. To overcome the limitations of the quasi-clique-based approach, we propose d-coherent core (d-CC), a new notion of…

Databases · Computer Science 2017-10-03 Rong Zhu , Zhaonian Zou , Jianzhong Li

Reinforcement learning agents need a reward signal to learn successful policies. When this signal is sparse or the corresponding gradient is deceptive, such agents need a dedicated mechanism to efficiently explore their search space without…

Artificial Intelligence · Computer Science 2021-04-13 Alexandre Chenu , Nicolas Perrin-Gilbert , Stéphane Doncieux , Olivier Sigaud

Selectivity estimation aims at estimating the number of database objects that satisfy a selection criterion. Answering this problem accurately and efficiently is essential to many applications, such as density estimation, outlier detection,…

Databases · Computer Science 2021-05-28 Yaoshu Wang , Chuan Xiao , Jianbin Qin , Rui Mao , Onizuka Makoto , Wei Wang , Rui Zhang , Yoshiharu Ishikawa

Due to the high cost of manual annotation, learning directly from the web has attracted broad attention. One issue that limits their performance is the problem of visual polysemy. To address this issue, we present an adaptive multi-model…

Information Retrieval · Computer Science 2019-05-28 Yazhou Yao , Zeren Sun , Fumin Shen , Li Liu , Limin Wang , Fan Zhu , Lizhong Ding , Gangshan Wu , Ling Shao

A core research question in recommender systems is to propose batches of highly relevant and diverse items, that is, items personalized to the user's preferences, but which also might get the user out of their comfort zone. This diversity…

Information Retrieval · Computer Science 2026-02-03 Clémence Réda , Tomas Rigaux , Hiba Bederina , Koh Takeuchi , Hisashi Kashima , Jill-Jênn Vie

We propose DIVERSE, a framework for systematically exploring the Rashomon set of deep neural networks, the collection of models that match a reference model's accuracy while differing in their predictive behavior. DIVERSE augments a…

Machine Learning · Computer Science 2026-01-29 Gilles Eerlings , Brent Zoomers , Jori Liesenborgs , Gustavo Rovelo Ruiz , Kris Luyten

While keyword query empowers ordinary users to search vast amount of data, the ambiguity of keyword query makes it difficult to effectively answer keyword queries, especially for short and vague keyword queries. To address this challenging…

Databases · Computer Science 2013-01-14 Jianxin Li , Chengfei Liu , Liang Yao , Jeffrey Xu Yu

In person re-identification (re-ID) task, it is still challenging to learn discriminative representation by deep learning, due to limited data. Generally speaking, the model will get better performance when increasing the amount of data.…

Computer Vision and Pattern Recognition · Computer Science 2023-03-01 Wen Li , Cheng Zou , Meng Wang , Furong Xu , Jianan Zhao , Ruobing Zheng , Yuan Cheng , Wei Chu

Diversity is a commonly known principle in the design of recommender systems, but also ambiguous in its conceptualization. Through semi-structured interviews we explore how practitioners at three different public service media organizations…

Information Retrieval · Computer Science 2024-05-06 Sanne Vrijenhoek , Savvina Daniil , Jorden Sandel , Laura Hollink

Though performed almost effortlessly by humans, segmenting 2D gray-scale or color images into respective regions of interest (e.g.~background, objects, or portions of objects) constitutes one of the greatest challenges in science and…

Computer Vision and Pattern Recognition · Computer Science 2023-08-23 Alexandre Benatti , Luciano da F. Costa

Diversities are like metric spaces, except that every finite subset, instead of just every pair of points, is assigned a value. Just as there is a theory of minimal distortion embeddings of finite metric spaces into $L_1$, there is a…

Metric Geometry · Mathematics 2016-11-10 David Bryant , Paul F. Tupper

I present a framework based on the concepts of diversity and coherence for the analysis of knowledge integration and diffusion. Visualisations that help understand insights gained are also introduced. The key novelty offered by this…

Physics and Society · Physics 2014-12-23 Ismael Rafols
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