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CIKM
2010
Springer
15 years 5 months ago
Hypergraph-based multilevel matrix approximation for text information retrieval
In Latent Semantic Indexing (LSI), a collection of documents is often pre-processed to form a sparse term-document matrix, followed by a computation of a low-rank approximation to...
Haw-ren Fang, Yousef Saad
SIAMFM
2011
75views more  SIAMFM 2011»
14 years 9 months ago
Dynamic Hedging of Portfolio Credit Derivatives
As shown by the recent turmoil in credit markets, much remains to be done for the proper risk management of credit derivatives. In particular, the static copula-based models commo...
Rama Cont, Yu Hang Kan
SISAP
2011
IEEE
437views Data Mining» more  SISAP 2011»
14 years 9 months ago
Succinct nearest neighbor search
In this paper we present a novel technique for nearest neighbor searching dubbed neighborhood approximation. The central idea is to divide the database into compact regions repres...
Eric Sadit Tellez, Edgar Chávez, Gonzalo Na...
VLDB
2001
ACM
66views Database» more  VLDB 2001»
15 years 11 months ago
An Evaluation of Generic Bulk Loading Techniques
Bulk loading refers to the process of creating an index from scratch for a given data set. This problem is well understood for B-trees, but so far, non-traditional index structure...
Jochen Van den Bercken, Bernhard Seeger
XIMEP
2005
ACM
121views Database» more  XIMEP 2005»
16 years 2 days ago
Adaptive XML Storage or The Importance of Being Lazy
Building an XML store means finding solutions to the problems of representing, accessing, querying and updating XML data. The irregularity of both the structure and usage of XML, ...
Cristian Duda, Donald Kossmann