نتایج جستجو برای: high dimensional data

تعداد نتایج: 4272118  

2014
Arthur Zimek Ira Assent Jilles Vreeken

Discovering clusters in subspaces, or subspace clustering and related clustering paradigms, is a research field where we find many frequent pattern mining related influences. In fact, as the first algorithms for subspace clustering were based on frequent pattern mining algorithms, it is fair to say that frequent pattern mining was at the cradle of subspace clustering—yet, it quickly developed i...

Feature selection can significantly be decisive when analyzing high dimensional data, especially with a small number of samples. Feature extraction methods do not have decent performance in these conditions. With small sample sets and high dimensional data, exploring a large search space and learning from insufficient samples becomes extremely hard. As a result, neural networks and clustering a...

Journal: :APTIKOM Journal on Computer Science and Information Technologies 2018

Journal: :Proceedings of the VLDB Endowment 2022

This paper introduces an approach to supporting high-dimensional data cubes at interactive query speeds and moderate storage cost. The is based on binary(-domain) that are judiciously partially materialized; the missing information can be quickly reconstructed using statistical or linear programming techniques. enables new applications such as exploratory analysis for feature engineering other ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علامه طباطبایی - دانشکده اقتصاد 1393

due to extraordinary large amount of information and daily sharp increasing claimant for ui benefits and because of serious constraint of financial barriers, the importance of handling fraud detection in order to discover, control and predict fraudulent claims is inevitable. we use the most appropriate data mining methodology, methods, techniques and tools to extract knowledge or insights from ...

Journal: :Journal of Applied Statistics 2012

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه مازندران - دانشکده علوم انسانی و اجتماعی 1388

abstract the present study was conducted to examine the effect of proficiency on students interaction while carrying out the grammar-based task(s) in collaboration. in particular, the study examines whether the level of proficiency affects the learners’ focus of attention to grammatical and lexical features. the study takes a further step and examines whether there is any difference in the use...

2013
Sylvain Dormieu Nicolas Labroche

Résumé. Cet article propose un nouvel algorithme pour le problème de subspace clustering dénommé SNOW. Contrairement aux approches descendantes classiques, il ne repose pas sur l’hypothèse de localité et permet l’affectation d’une donnée à plusieurs clusters dans des sous-espaces différents. Les expérimentations préliminaires montrent que notre approche obtient de meilleurs résultats que l’algo...

2003
René Esteban Vidal Jitendra Malik Charles Pugh Shankar Sastry

Generalized Principal Component Analysis (GPCA): an Algebraic Geometric Approach to Subspace Clustering and Motion Segmentation

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