Reliability Analysis of Deduplicated and Erasure-Coded Storage

 
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Old 10-23-2010
Reliability Analysis of Deduplicated and Erasure-Coded Storage

HPL-2010-146 Reliability Analysis of Deduplicated and Erasure-Coded Storage - Li, Xiaozhou; Lillibridge, Mark; Uysal, Mustafal
Keyword(s): Deduplication, erasure coding
Abstract: Space efficiency and data reliability are two primary concerns for modern storage systems. Chunk-based deduplication, which breaks up data objects into single-instance chunks that can be shared across objects, is an effective method for saving storage space. However, deduplication affects data relia ...
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KinoSearch1::Analysis::PolyAnalyzer(3pm)		User Contributed Perl Documentation		  KinoSearch1::Analysis::PolyAnalyzer(3pm)

NAME
KinoSearch1::Analysis::PolyAnalyzer - multiple analyzers in series SYNOPSIS
my $analyzer = KinoSearch1::Analysis::PolyAnalyzer->new( language => 'es', ); # or... my $analyzer = KinoSearch1::Analysis::PolyAnalyzer->new( analyzers => [ $lc_normalizer, $custom_tokenizer, $snowball_stemmer, ], ); DESCRIPTION
A PolyAnalyzer is a series of Analyzers -- objects which inherit from KinoSearch1::Analysis::Analyzer -- each of which will be called upon to "analyze" text in turn. You can either provide the Analyzers yourself, or you can specify a supported language, in which case a PolyAnalyzer consisting of an LCNormalizer, a Tokenizer, and a Stemmer will be generated for you. Supported languages: en => English, da => Danish, de => German, es => Spanish, fi => Finnish, fr => French, it => Italian, nl => Dutch, no => Norwegian, pt => Portuguese, ru => Russian, sv => Swedish, CONSTRUCTOR
new() my $analyzer = KinoSearch1::Analysis::PolyAnalyzer->new( language => 'en', ); Construct a PolyAnalyzer object. If the parameter "analyzers" is specified, it will override "language" and no attempt will be made to generate a default set of Analyzers. o language - Must be an ISO code from the list of supported languages. o analyzers - Must be an arrayref. Each element in the array must inherit from KinoSearch1::Analysis::Analyzer. The order of the analyzers matters. Don't put a Stemmer before a Tokenizer (can't stem whole documents or paragraphs -- just individual words), or a Stopalizer after a Stemmer (stemmed words, e.g. "themselv", will not appear in a stoplist). In general, the sequence should be: normalize, tokenize, stopalize, stem. COPYRIGHT
Copyright 2005-2010 Marvin Humphrey LICENSE, DISCLAIMER, BUGS, etc. See KinoSearch1 version 1.00. perl v5.14.2 2011-11-15 KinoSearch1::Analysis::PolyAnalyzer(3pm)