Changes between Version 1 and Version 2 of DespoinaLog_Index_search


Ignore:
Timestamp:
2011-03-04T10:14:05+01:00 (13 years ago)
Author:
antonak
Comment:

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  • DespoinaLog_Index_search

    v1 v2  
    33
    44=== Documentation ===
    5 http://www.molgenis.org/wiki/IndexBasedSearch
     5http://www.molgenis.org/wiki/IndexBasedSearch, http://www.molgenis.org/wiki/LuceneIndexBasedSearchManual
    66
    7 == Index Design Factors  ==
     7== Index Design Factors ==
    88=== '''Merge factors ''' ===
    9   Which features are selected to enter the index. This is configurable through the configuration file in the plugin ,^ ^
     9  Which features are selected to enter the index. This is configurable through the configuration file in the plugin.
    1010
    11  Storage techniques:: How to store the index [http://en.wikipedia.org/wiki/Data data] , that is, whether information should be data compressed or filtered.
     11=== Storage techniques ===
     12  How to store the index [http://en.wikipedia.org/wiki/Data data]  , that is, whether information should be data compressed or filtered. This is configurable through the configuration file in the plugin.
    1213
     14=== Index size ===
     15===     How much computer storage is required to support the index. This depends on the number of the entites (DB tables or Ontocat retrieved terms)  selected by the user . The size is optimized by [http://lucene.apache.org/java/2_4_0/api/org/apache/lucene/index/IndexWriter.html Lucene's Indexwriter class]  ===
     16=== Lookup speed ===
     17 How quickly a word can be found in the inverted index. Lucene's machine is used for this purpose configuring IndexWriter.Other factors : http://wiki.apache.org/lucene-java/ImproveIndexingSpeed
    1318
    14  Index size:: How much computer storage is required to support the index.
    15  Lookup speed:: How quickly a word can be found in the inverted index. The speed of finding an entry in a data structure, compared with how quickly it can be updated or removed, is a central focus of computer science.
    16  Maintenance:: How the index is maintained over time.^ [http://en.wikipedia.org/wiki/Index_(search_engine)#cite_note-5 "[6]"] ^
     19[[BR]]
     20== Maintenance ==
     21 The index should be recreated on database changes. In future work is included the creation of a Molgenis decorators that will add new entries of the database in the index, skipping the creating of the whole index. 
    1722 Fault tolerance::