Package org.terrier.utility

Class FieldScore

  • public class FieldScore
extends java.lang.Object
    A class for modifying the retrieval scores of documents, according to whether the query terms appear to any of the fields, or tags specified by the property FieldTags.process. These tags can be either HTML tags or tags such as DOCHDR, from the documents.
    If a query term appears in any of the specified tags, then the document score can be altered according to the values specified in the property field.modifiers. For example, if FieldTags.process=TITLE,H1,B and field.modifiers=0.10,0.00,0.00, then if a query term appears in the title of a document, the document's score will be increased by a factor of 0.10.
    Author:
    Douglas Johnson, Vassilis Plachouras

    • Field Summary

      Fields 
      Modifier and Type Field Description
      static java.lang.String[] FIELD_NAMES
      The names of the fields to be processed.
      static int FIELDS_COUNT
      The total number of tags to check for.
      static boolean USE_FIELD_INFORMATION
      Indicates whether field information is used.

    • Constructor Summary

      Constructors 
      Constructor Description
      FieldScore()  

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static void init()
      Initialises the FieldTags tagset

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Field Detail

      • FIELDS_COUNT

        public static int FIELDS_COUNT
        The total number of tags to check for.

      • USE_FIELD_INFORMATION

        public static boolean USE_FIELD_INFORMATION
        Indicates whether field information is used.

      • FIELD_NAMES

        public static java.lang.String[] FIELD_NAMES
        The names of the fields to be processed. The values are read from the property FieldTags.process.

    • Constructor Detail

      • FieldScore

        public FieldScore()

    • Method Detail

      • init

        public static void init()
        Initialises the FieldTags tagset