For more information about field filters, see the following web page: http://pic.dhe.ibm.com/infocenter/analytic/v3r0m0/topic/com.ibm.discove ry.es.ad.doc/iiysafilter.htm For our use case, we modified and added a number of fields and facets to the  enterprise search collection.  The administration console contains one addition pane: Search. This pane  configures how the search server processes submitted queries. Later, we  complete the design by configuring how the fields and facets added in this  section are to be in the enterprise search application. The Search panel of the administration console provides configurations that  control the runtime behavior. These are relevant to both the enterprise search  application and to any custom application created with the Content Analytics  search REST API. For information about the REST API, see Chapter 14,  “Customizing and extending the content analytics miner” on page 535. Good search results are measured not just by what is returned in the results set,  but it is also measured by how easily a user can find items of interest in the result  set. With a typical keyword search, the results set may contain hundreds to  thousands of items. When you use rules to effectively configure search query  behavior and organize search results, you help users to better formulate their  search and browse through the results. There are several ways that you can use rules to tune queries and results: Query expansion, ranking, and aggregation are all interrelated and the proper  combination of them can be very powerful. For example, the ranking rules decide  the order of the returned items based on which fields contain the search terms.  The query expansion rules can also influence ranking. The aggregate rules  12.4 Customizing runtime search 12.4.1 Tuning queries and results GLYPH<SM590000> Ranking: Controls the order in which items are listed in the results set. This  helps to bring more relevant search results to the users’ attention. GLYPH<SM590000> Query expansion: Enables additional terms to be added to the search query,  thus expanding the results set. In this way, words (synonyms) that are not  chosen by users, but occur in the text, can be included in the query. GLYPH<SM590000> Aggregate: Enables the logical grouping of the search results. 462  IBM Watson Content Analytics: Discovering Actionable Insight from Your Content