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Fuzzy cluster validation index based on inter-cluster proximity

Pattern Recognition Letters, 2003
A new cluster validity index is proposed for fuzzy partitions obtained from Fuzzy C-Means algorithm. The proposed validity index exploits an inter-cluster proximity between fuzzy clusters. The inter-cluster proximity is used to measure the degree of overlap between clusters. A low proximity value indicates well-partitioned clusters.
Kwang H Lee, Doheon Lee
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Feature selection using a proximity-index optimization model

Pattern Recognition Letters, 1994
Abstract One of the recurring issues in pattern recognition problems has been feature extraction and selection. This paper addresses this issue from a different pespective. Without assuming any particular classificaiton algorithm, it first suggests that one extract as much information as conveniently possible in several pattern-information domains ...
Khalid J. Siddiqui, Y.-H. Liu, D. R. Hay, Ching Y. Suen   +3 more
exaly   +3 more sources

An index for proximity of two distributions [PDF]

METRON, 2017
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Longford, NT, Nicholas T. Longford
openaire   +4 more sources

Index Tuning for Efficient Proximity-Enhanced Query Processing

, 2010
Scoring models that make use of proximity information usually improve result quality in text retrieval. Considering that index structures carrying proximity information can grow huge in size if they are not pruned, it is helpful to tune indexes towards space requirements and retrieval quality. This paper elaborates on our approach used for INEX 2009 to
Andreas Broschart, Ralf Schenkel
openaire   +4 more sources

Boosting the Permutation Based Index for Proximity Searching

Lecture Notes in Computer Science, 2015
Proximity searching consists in retrieving objects out of a database similar to a given query. Nowadays, when multimedia databases are growing up, this is an elementary task. The permutation based index PBI and its variants are excellent techniques to solve proximity searching in high dimensional spaces, however they have been surmountable in low ...
Karina Figueroa, Rodrigo Paredes, Figueroa Karina   +2 more
exaly   +2 more sources

Density index and proximity search in large graphs

Proceedings of the 21st ACM international conference on Information and knowledge management, 2012
Given a large real-world graph where vertices are associated with labels, how do we quickly find interesting vertex sets according to a given query? In this paper, we study label-based proximity search in large graphs, which finds the top-k query-covering vertex sets with the smallest diameters. Each set has to cover all the labels in a query. Existing
Nan Li, Xifeng Yan, Zhen Wen, Arijit Khan 0001   +3 more
openaire   +2 more sources

Efficient query processing and index tuning using proximity scores

, 2012
Angesichts wachsender Datenmengen stellt effiziente Anfrageverarbeitung, die gleichzeitig Ergebnisqualität und Indexgröße berücksichtigt, zusehends eine Herausforderung für Suchmaschinen dar. Wir zeigen, wie man Proximityscores einsetzen kann, um Anfragen effektiv und effizient zu verarbeiten, wobei der Schwerpunkt auf eines der Ziele gelegt wird.
Broschart, Andreas, Broschart, A.
openaire   +4 more sources

A new fuzzy multi-criteria decision-making method based on proximity index value

Journal of Industrial and Production Engineering, 2021
This work proposes a Fuzzy Proximity Index Ranking method to facilitate multi-criteria decision making in fuzzy environment. The proposed method is derived from proximity index value approach by incorporating the fuzzy concept to take care of vagueness ...
Sameera Mufazzal, Noor Zaman Khan, S. Muzakkir, A. N. Siddiquee, Z. A. Khan   +4 more
semanticscholar   +1 more source