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Improving Neighborhood-Based Collaborative Filtering by Reducing Hubness

Peter Knees, Dominik Schnitzer, Arthur Flexer
2014 Proceedings of International Conference on Multimedia Retrieval - ICMR '14  
In this paper, we investigate the effects of the high dimensionality of user×item matrices on the quality of memorybased movie rating prediction.  ...  For recommending multimedia items, collaborative filtering (CF) denotes the technique of automatically predicting a user's rating or preference for an item by exploiting item preferences of a (large) group  ...  DISCUSSION AND FUTURE WORK In this paper, we examined CF rating data for the effect of hubness, a common phenomenon in high-dimensional data spaces.  ... 
doi:10.1145/2578726.2578747 dblp:conf/mir/KneesSF14 fatcat:lycg7z22ergtxfhllhsx7foy3e

Improving Visualization Of High-Dimensional Music Similarity Spaces

Arthur Flexer
2015 Zenodo  
ness Removal in High-Dimensional Multimedia Re- trieval, Proceedings of the 36th European Conference [6] Gasser M., Flexer A., Schnitzer  ...  ., Flexer A.: FM4 Soundpark: Audio-based Music Recommendation in Everyday Use, Proc. of the [21] Schnitzer D., Flexer A., Tomašev N.: A Case for Hub- 6th Sound and Music Computing Conference  ... 
doi:10.5281/zenodo.1416472 fatcat:2ibks2zq2zghpd5fl2jhl6r2m4

Can Shared Nearest Neighbors Reduce Hubness in High-Dimensional Spaces?

Arthur Flexer, Dominik Schnitzer
2013 2013 IEEE 13th International Conference on Data Mining Workshops  
Hubness' is a recently discovered general problem of machine learning in high dimensional data spaces.  ...  It is related to the concentration of distances which impairs the contrast of distances in high dimensional spaces.  ...  Similar effects have been documented for other types of multimedia retrieval and recommendation such as speech [19] , image [20] and text retrieval [1] .  ... 
doi:10.1109/icdmw.2013.101 dblp:conf/icdm/FlexerS13 fatcat:pgbotxa5dvhwlo4juwhi7shpom

On the Selection of Anchors and Targets for Video Hyperlinking [article]

Zhi-Qi Cheng, Hao Zhang, Xiao Wu, Chong-Wah Ngo
2018 arXiv   pre-print
This paper provides some insights to this question from the perspective of hubness and local intrinsic dimensionality, which are two statistical properties in assessing the popularity and complexity of  ...  A problem not well understood in video hyperlinking is what qualifies a fragment as an anchor or target.  ...  In retrieval for example, certain items share high similarity to disproportionally many other items, and thus are likely to be retrieved.  ... 
arXiv:1804.05286v1 fatcat:p3pcrvqk3fbunek4j5uq7cu2hi

A critical assessment of spoken utterance retrieval through approximate lattice representations

Siavash Kazemian, Frank Rudzicz, Gerald Penn, Cosmin Munteanu
2008 Proceeding of the 1st ACM international conference on Multimedia information retrieval - MIR '08  
WER conditions for spoken utterance retrieval.  ...  in two disparate domains.  ...  for multimedia retrieval.  ... 
doi:10.1145/1460096.1460112 dblp:conf/mir/KazemianRPM08 fatcat:fp6sjxlk5fcp3jowyu2ewek5s4

Wireless Multimedia Sensor Networks: Applications and Testbeds

I.F. Akyildiz, T. Melodia, K.R. Chowdhury
2008 Proceedings of the IEEE  
This paper is intended to be a resource for researchers interested in advancing the state-of-the-art in experimental research on wireless multimedia sensor networks.  ...  Clearly, such algorithms are very promising for WMSNs. Multimedia In-Network Processing.  ...  They are integral in reducing both the dimensionality and the volume of data conveyed to the sink and storage devices. Storage Hubs.  ... 
doi:10.1109/jproc.2008.928756 fatcat:scfgptc6gzcd7bk4xojhns72ly

Jungle Computing: Distributed Supercomputing Beyond Clusters, Grids, and Clouds [chapter]

Frank J. Seinstra, Jason Maassen, Rob V. van Nieuwpoort, Niels Drost, Timo van Kessel, Ben van Werkhoven, Jacopo Urbani, Ceriel Jacobs, Thilo Kielmann, Henri E. Bal
2011 Computer Communications and Networks  
In recent years, the application of high-performance and distributed computing in scientific practice has become increasingly wide spread.  ...  With high-performance and distributed computing sys-  ...  In case we would remove the hub network, we only would have access to those machines that allow direct connections to and from our client application.  ... 
doi:10.1007/978-0-85729-049-6_8 fatcat:2yu35vj42baitofzx3xjobbxoy

Data Mining: Web Data Mining Techniques, Tools and Algorithms: An Overview

Muhammd Jawad Hamid Mughal
2018 International Journal of Advanced Computer Science and Applications  
Web data mining became an easy and important platform for retrieval of useful information. Users prefer World Wide Web more to upload and download data.  ...  Web data mining is a sub discipline of data mining which mainly deals with web. Web data mining is divided into three different types: web structure, web content and web usage mining.  ...  Good authority is a page that is pointed by high hub weights and good hubs are pages that points to many authority pages with high weights Fig. 5 .  ... 
doi:10.14569/ijacsa.2018.090630 fatcat:szpscjf6rrhbhgx43ktrdx4fsi

Revisiting k-Nearest Neighbor Graph Construction on High-Dimensional Data : Experiments and Analyses [article]

Liu Yingfan, Cheng Hong, Cui Jiangtao
2021 arXiv   pre-print
The k-nearest neighbor graph (KNNG) on high-dimensional data is a data structure widely used in many applications such as similarity search, dimension reduction and clustering.  ...  To address these issues, we comprehensively compare the representative approaches on real-world high-dimensional data sets to provide practical and insightful suggestions for users.  ...  In this case, there are totally n ∗ Mhnsw prun- retrieved by the search process and a distance is computed ing operations.  ... 
arXiv:2112.02234v1 fatcat:od4skj4worgvfc7dbonwof7y2y

PicASHOW: pictorial authority search by hyperlinks on the web

Ronny Lempel, Aya Soffer
2002 ACM Transactions on Information Systems  
We conclude that link analysis, a proven effective technique for Web page search, can improve the performance of Web image retrieval, as well as extend its definition to include the retrieval of image  ...  hubs and containers.  ...  Acknowledgments We would like to thank Shlomo Moran and Yoelle Maarek for useful discussions on the ideas presented in this paper.  ... 
doi:10.1145/503104.503105 fatcat:ahfpodtrsneprhfgzypzx4u5sm

PicASHOW

Ronny Lempel, Aya Soffer
2001 Proceedings of the tenth international conference on World Wide Web - WWW '01  
We conclude that link analysis, a proven effective technique for Web page search, can improve the performance of Web image retrieval, as well as extend its definition to include the retrieval of image  ...  hubs and containers.  ...  Acknowledgments We would like to thank Shlomo Moran and Yoelle Maarek for useful discussions on the ideas presented in this paper.  ... 
doi:10.1145/371920.372098 dblp:conf/www/LempelS01 fatcat:yj4j3bxfpnbu7o4vr4wgfeme3u

A comprehensive empirical comparison of hubness reduction in high-dimensional spaces

Roman Feldbauer, Arthur Flexer
2018 Knowledge and Information Systems  
Hubs occur in high-dimensional data spaces as objects that are particularly often among the nearest neighbors of other objects.  ...  In this paper, we present a large-scale empirical evaluation of all available unsupervised hubness reduction methods and dissimilarity measures.  ...  We would like to express our gratitude to Thomas Rattei for granting access to the Life Science Compute Cluster of the University of Vienna and Jan Schlüter for helpful comments on the manuscript.  ... 
doi:10.1007/s10115-018-1205-y pmid:32647403 pmcid:PMC7327987 fatcat:zd4agqoxovdx7icr7opz3losca

Wireless multimedia sensor networks: A survey

Ian Akyildiz, Tommaso Melodia, Kaushik Chowdury
2007 IEEE wireless communications  
They are integral to reducing both the dimensionality and the volume of data conveyed to the sink and storage devices. Storage Hubs.  ...  Hence, dropping packets indiscriminately, as in the case of UDP, may cause discernible disruptions in the multimedia content.  ...  Algorithms for both inter-media and intra-media data aggregation and fusion must be developed, because simple distributed processing schemes developed for existing scalar sensors are not designed for multimedia  ... 
doi:10.1109/mwc.2007.4407225 fatcat:oe2fcopi35gz7kfgpecmr52aeq

Splog Detection using Content, Time and Link Structures

Yu-Ru Lin, Hari Sundaram, Yun Chi, Jun Tatemura, Belle Tseng
2007 Multimedia and Expo, 2007 IEEE International Conference on  
The key idea is that splogs exhibit high temporal regularity in content and post time, as well as consistent linking patterns.  ...  Temporal structural regularity is determined using the entropy of the post time difference distribution, while the link regularity is computed using a HITS based hub score measure.  ...  low-dimensional feature vector cases.  ... 
doi:10.1109/icme.2007.4285079 dblp:conf/icmcs/LinSCTT07 fatcat:oul5q7j6ovdydiatkodx42kqmq

A framework for evaluating geographical information

J. Raper, J. Dykes, J. Wood, D. Mountain, A. Krause, D. Rhind
2002 Journal of Information Science  
This kind of architecture provides a distributed and open platform for the development of GI networks, upon which more productive use of GI can be built in future.  ...  This paper also outlines the architecture of a client-server geolibrary designed for information sharing.  ...  This kind of architecture provides a distributed and open platform for the development of GI networks, upon which more productive use of GI can be built in future.  ... 
doi:10.1177/0165551024233931 fatcat:zjw5fawayje5tjhlz6cytjkfxm
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