Question

I have a Sphinx index of text files and I d like to retrieve a list of the keyterms Sphinx found when indexing the text files, ordered, highest to lowest, by how frequently they occurred in the dataset. How do I do this?

如果有可能,我就希望检索真实术语和干.。

Im利用PHP机向指数打电话。

Below are my Sphinx.conf settings for this index:

source srcDatasheets
{
    type                = mysql
    sql_host            = localhost
    sql_user            = user
    sql_pass            = pass
    sql_db              = db
    sql_port            = 3306

    sql_query           = 
         SELECT id, company_id, title, brief, content_file_path 
         FROM datasheets

    sql_attr_uint       = company_id
    sql_file_field      = content_file_path
    sql_query_info      = SELECT * FROM datasheets WHERE id=$id
}


index datasheets
{
    source              = srcDatasheets
    path                = /usr/local/sphinx/var/data/datasheetsStemmed
    docinfo             = extern
    charset_type        = sbcs
    morphology          = stem_en
    min_stemming_len    = 1
}

Answer 1

One cannot retrieve keyword density directly from a live index with Sphinx. The data is not stored in a way that allows this. Here is a response from the Sphinx forums.

What you can do, however, is run the indexer with --buildstops, and --buildfreqs (see the docs). The indexer will output a txt file of the most frequently occurring terms and frequencies based on the settings you have in the .conf file for that index.

这套数据用于编制清单和文本档案,实际上没有编制新的可检索索引。

我对文本档案索引(变造的pdf)进行了测试,其字数长度为5个特性。大约20秒中处理了70 000份档案(5分钟,限定为1份)。

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