Adjusting results relevance

You can adjust the relevance of search results to give more or less weight to results that meet a specified search criteria.

To adjust search score relevance, use the index data service CSN.Relevance advanced configuration setting. You can adjust results relevance for specific objects such a reports, PowerPlay® reports, agents, and screentips. You can also adjust results relevance for container objects such as folders and packages. If relevance is set for a container object, the results relevance adjustment will apply to all objects that reference the container. For more information, see Change Index Data Service Parameters.

Procedure

  1. In IBM® Cognos® Connection, click Launch, IBM Cognos Administration.
  2. On the Index Search tab, click Storage, then click Advanced.
  3. Add the CSN.Relevance parameter to the advanced configuration settings list and set the value to the path for the object.

    For example:

    CSN.Relevance.1 = 20;/content/folder[@name='Sales_2006']/report[@name='revenue']

    Note: Search paths are language-specific, so you must set separate parameters for each language.
  4. Enter additional CSN.Relevance parameters and values as required.
    Note: You can add up to 50 instances of CSN.Relevance. Each instance must be appended with a number to distinguish it from other CSN.Relevance settings. For example, you can use CSN.Relevance.0 to CSN.Relevance.49 to identify each setting.
  5. Click Save.

Results

In the step three example, any search queries on "revenue" that return reports from the "Sales_2006" package will have the relevance of the search result score increased by 20 percent. If the relevance of the search score was 45 percent prior to setting CSN.Relevance, the new relevance of the search results score will be 54.

To decrease the relevance of a search results score, use a negative number. For example, -10 would decrease the relevance of a score by 10 percent.