19,661 Hits in 4.1 sec

A retrieval technique for high-dimensional data and partially specified queries

Ratko Orlandic, Byunggu Yu
2002 Data & Knowledge Engineering  
Unfortunately, the multi-dimensional access methods designed for high-dimensional data perform rather poorly for these partially specified queries.  ...  The retrieval technique proposed in this paper uses a combination of two complementary measures to support efficient processing of partial queries over high-dimensional data.  ...  The retrieval technique proposed in this paper uses a combination of two measures to support efficient processing of partially specified queries over high-dimensional data.  ... 
doi:10.1016/s0169-023x(02)00023-x fatcat:np7s4ruj7zhq5lq7vaypyrvzyi

Querying Complex Spatio-Temporal Sequences in Human Motion Databases

Yueguo Chen, Shouxu Jiang, Beng Chin Ooi, Anthony K.H. Tung
2008 2008 IEEE 24th International Conference on Data Engineering  
New distance measures and queries for high dimensional categorical time series are then proposed and efficient query processing techniques for answering these queries are developed.  ...  These data are typically modelled as time series of high dimensional vectors which incur expensive storage and retrieval cost as a result of the high dimensionality.  ...  Definition A very common query on high dimensional time series is the sketch query, in which users describe a number of snapshots (by specifying some π and σ clauses) and the system returns those matching  ... 
doi:10.1109/icde.2008.4497417 dblp:conf/icde/ChenJOT08 fatcat:6m34vhdw6razlp6xrnnww6qfaa

Concentric hyperspaces and disk allocation for fast parallel range searching

H. Ferhatosmanoglu, D. Agrawal, A. El Abbadi
1999 Proceedings 15th International Conference on Data Engineering (Cat. No.99CB36337)  
However, most of these techniques were primarily designed for two-dimensional data and for balanced partitioning of the data space.  ...  In this paper, we first establish that traditional declustering techniques do not scale for high-dimensional data. We then propose several new partitioning schemes based on concentric hyperspaces.  ...  After partitioning the data space, we evaluate the techniques with high dimensional range queries. To process a range query, first, the set of buckets that will be retrieved by the query is computed.  ... 
doi:10.1109/icde.1999.754977 dblp:conf/icde/FerhatosmanogluAA99 fatcat:psux4hfrsveujoerahbiudiuqu

High dimensional nearest neighbor searching

Hakan Ferhatosmanoglu, Ertem Tuncel, Divyakant Agrawal, Amr El Abbadi
2006 Information Systems  
We develop a general framework for approximate NN queries, discuss various approaches for progressive processing of similarity queries, and develop a metric for evaluation of such techniques.  ...  As a result of the scale and high dimensional nature, the traditional techniques have proven inadequate.  ...  However, any opinions, findings, conclusions or recommendations expressed herein are those of the author, and do not necessarily reflect the views of the DOE.  ... 
doi:10.1016/ fatcat:z2kfzeqwfnekfpmt6fucje6w6a

Efficient Similarity Indexing and Searching in High Dimensions [article]

Yu Zhong
2015 arXiv   pre-print
This paper presents a new approach for fast and effective searching and indexing of high dimensional features using random partitions of the feature space.  ...  Efficient indexing and searching of high dimensional data has been an area of active research due to the growing exploitation of high dimensional data and the vulnerability of traditional search methods  ...  Acknowledgement We would like to thank Alex Andoni of MIT for kindly providing the LSH implementation and answering questions about the LSH algorithm.  ... 
arXiv:1505.03090v1 fatcat:npl3qabpk5bilipzye3bqzvlpm

Caching support for skyline query processing with partially-ordered domains

Yu-Ling Hsueh, Roger Zimmermann, Wei-Shinn Ku
2012 Proceedings of the 20th International Conference on Advances in Geographic Information Systems - SIGSPATIAL '12  
The results of skyline queries performed on data sets with partially-ordered domains vary depending on users' preference profiles specified for the partially-ordered domains.  ...  For this purpose, we introduce a similarity measure that establishes the level of a relation of a new query to each of the previously cached queries and profiles.  ...  the National Science Foundation (NSF) Grants CNS-0831502 (CT) and CNS-0855251 (CRI).  ... 
doi:10.1145/2424321.2424371 dblp:conf/gis/HsuehZK12 fatcat:bwilthretvhzhh7vouuy7dpzau

Optimizing multiple queries on scientific datasets with partial replicas

Li Weng, Umit Catalyurek, Tahsin Kurc, Gagan Agrawal, Joel Saltz
2007 2007 8th IEEE/ACM International Conference on Grid Computing  
Data elements whose attribute values fall into the specified bounds are retrieved from the dataset.  ...  This scenario corresponds to a case where the user wants to query and retrieve a spatial feature from the dataset. We propose cost models and an algorithm for optimizing such queries.  ...  the best set of partial replicas for a given query with a rectangular multi-dimensional bounding box.  ... 
doi:10.1109/grid.2007.4354141 dblp:conf/grid/WengCKAS07 fatcat:fd42agtjhvcypmiyaplo7aieqa


Bin Cui, Ling Liu, Calton Pu, Jialie Shen, Kian-Lee Tan
2007 Proceedings of the 15th international conference on Multimedia - MULTIMEDIA '07  
An important challenge for music searching is its ability to support both keyword and content based queries efficiently and with high precision.  ...  In this paper, we present a music query system − QueST (Query by acouStic and T extual features) to support both keyword and content based retrieval in large music databases.  ...  The rapid growth and continued availability of music data has created a number of new challenges for managing, exploring and retrieving music data with rich query expressions, high accuracy and efficiency  ... 
doi:10.1145/1291233.1291465 dblp:conf/mm/CuiLPST07 fatcat:jkbd3rkxwnhkdcdipyxeckrnoa

Similarity search in content-based multimedia retrieval using spatial grid files

Adil Alpkocak, Esen Ozkarahan, C.-C. Jay Kuo, Shih-Fu Chang, Sethuraman Panchanathan
1998 Multimedia Storage and Archiving Systems III  
Therefore, a multimedia information system must employ multiple search and indexing mechanisms due to integration of multiple search modalities such as querying for search and for indexing, keywords and  ...  In this paper, we introduce a new file structure called Spatial Grid File (SGF). This file structure enables to index multimedia objects by different and independent high-dimensional feature vectors.  ...  For querying these databases, it is essential to use appropriate indexing techniques that provide fast access paths to high dimensional data for multiple attributes.  ... 
doi:10.1117/12.325809 fatcat:w337o44uarefxdxehieo23ov5e

Optimal Multidimensional Query Processing Using Tree Striping [chapter]

Stefan Berchtold, Christian Böhm, Daniel A. Keim, Hans-Peter Kriegel, Xiaowei Xu
2000 Lecture Notes in Computer Science  
In this paper, we propose a new technique for multidimensional query processing which can be widely applied in database systems.  ...  The basic idea of tree striping is to use the optimal number k of lower-dimensional indexes determined by our theoretical analysis for efficient query processing.  ...  In order to answer a given range query with s attributes specified, it is necessary to access s one-dimensional indexes and to perform a costly merge of the partial results obtained from the one-dimensional  ... 
doi:10.1007/3-540-44466-1_24 fatcat:cixq2zulend75izft7eb257vue

A spatial grid file for multimedia data representation [chapter]

Adil Alpkoçak, Esen Ozkarahan
1997 Lecture Notes in Computer Science  
In multimedia databases spatial or high-dimensional data manipulation is important for storage and retrieval. In this study, we introduce a new file structure called Spatial Grid File.  ...  This file enables us to index data objects by different and independent high-dimensional attributes.  ...  A very popular and important application area of high-dimensional data indexing is multimedia databases.  ... 
doi:10.1007/3-540-63371-5_17 fatcat:zqrdndl6xza5nkh4obzl5drhme

An Efficient Indexing for Content Based Image Retrieval Based on Number of Clusters Using Clustering Technique

Monika Jain, S. K. Singh, Kavita Saxena
2017 International Journal of Artificial Intelligence and Applications for Smart Devices  
This paper focuses on a cluster based indexing technique for achieving efficient and effective retrieval performance.  ...  Generally such methods suffer from the problems of high dimensionality leading to more computational time and inefficient indexing and retrieval performance.  ...  The existing multi-dimensional indexing techniques concentrate on identifing and improving indexing techniques that are scalable to high dimensional feature vectors in image retrieval [7] .  ... 
doi:10.14257/ijaiasd.2017.5.1.01 fatcat:ooekqrtzmzeb7bculblaa4axuu

Speed up linear scan in high-dimensions by sorting one-dimensional projections

Jiangtao Cui, Bin Xiao, Gengdai Liu, Lian Jiang
2011 International Journal of Intelligent Systems and Applications  
High-dimensional indexing is a pervasive challenge faced in multimedia retrieval.  ...  In the new search algorithm, only a small portion of data points need to be linearly accessed by computing the bounded distance on the one-dimensional line, which can reduce the I/O and processor time  ...  Given this point, for k-NN queries in a high-dimensional space, linear scan remains an efficient search strategy for similarity search [3] .  ... 
doi:10.5815/ijisa.2011.04.06 fatcat:zua6gyeqkjag3ev3v66276sfnm

Feature Binding Technique for Integration of Biological Databases with Optimized Search and Retrieve

A Chandra Sekhara Rao, DVLN Somayajulu, Haider Banka, Sawrav Roy
2012 Procedia Technology - Elsevier  
Biological databases are highly decentralized, having a high degree of difference in terminologies, feature fields, data representation and query formats.  ...  Having done that, the problem of retrieving or manipulating data from a decentralized biological database is addressed in the Search & Retrieve algorithm, where stochastic and machine learning techniques  ...  ACKNOWLEDGEMENT The work was partially supported by CSIR grant no. 22(0586)/12/EMR-11.  ... 
doi:10.1016/j.protcy.2012.10.075 fatcat:pn3d54evirbjleqhzwmf5ezt4e

Incremental indexing and retrieval mechanism for scalable and robust shape matching

Shehzad Khalid
2011 Multimedia Systems  
A novel distributed beam search based technique is proposed that operates on the indexing structure and ensures no false dismissal for a given k-NN query.  ...  Techniques for efficient and effective content-based image matching are becoming increasingly important with the widespread increase in digital image capturing systems.  ...  The selected dimensional reduction technique should transform the high dimensional image to compact feature space while retaining most of the characteristic structure of the original data.  ... 
doi:10.1007/s00530-011-0252-y fatcat:dbc36yvbk5bvvjoybcjonlergq
« Previous Showing results 1 — 15 out of 19,661 results