Dictionary form

  • Release version: Yokohama
  • Updated March 28, 2025
  • 2 minutes to read
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    Summary of Dictionary form

    The Dictionary form in ServiceNow's AI Search allows you to create and manage dictionaries for typo handling, stop words, and synonyms. These dictionaries enhance search accuracy and relevance by customizing how AI Search interprets and processes terms within search profiles.

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    Key Features

    • Dictionary Types: Supports three types—Spell Check (typo handling), Stop Word, and Synonym dictionaries.
    • Language Settings: Language can be set for stop word and synonym dictionaries; typo handling dictionaries have language set automatically.
    • State Management: Dictionaries have states—New, Draft, and Published—to manage lifecycle and updates.
    • Case and Punctuation Sensitivity: Options to enable case sensitivity and punctuation sensitivity for dictionary terms, controlling how strictly terms are matched during searches.
    • Derived Entries (Typos): Typo handling dictionaries can derive auto-correction terms automatically from indexed content sources, with configurable refresh intervals.
    • Blocked Fields: You can exclude specific fields or entire tables from derivation to refine which terms are considered for typo corrections, using flexible field name patterns.

    Practical Use for ServiceNow Customers

    By leveraging the Dictionary form, you can tailor AI Search to better understand user queries and improve search results by:

    • Correcting common typos automatically based on your indexed content.
    • Excluding irrelevant stop words that may dilute search quality.
    • Mapping synonyms to unify search terms for consistent results.
    • Controlling sensitivity settings to align search behavior with organizational needs.
    • Managing dictionary lifecycle to deploy updates smoothly.

    These capabilities empower you to deliver more accurate and relevant search experiences within your ServiceNow environment.

    The Dictionary form enables you to create a typo handling, stop word, or synonym dictionary for use in your AI Search search profiles.

    For details on creating and modifying dictionaries, see Modify settings for a typo handling dictionary, Create a stop word dictionary linked to a search profile, and Create a synonym dictionary linked to a search profile.
    Note:
    When creating a typo handling dictionary, the name of the form is shown as AI Search Dictionary instead of Dictionary.
    Table 1. Dictionary and AI Search Dictionary forms
    Field Description
    Label Unique label for the dictionary.
    Dictionary name Name for the dictionary. This field is automatically set based on the Label field value.
    Language Language for all terms defined in the dictionary. This field only displays when editing a stop word or synonym dictionary. AI Search automatically sets the language for typo handling dictionaries.
    Note:
    You can only link one stop word dictionary with a given language to a search profile.
    Type Dictionary type. This field is automatically set to Spell Check, Stop Word, or Synonym.
    State Current state of the dictionary.
    • New: The dictionary has never been published.
    • Draft: The dictionary is saved with unpublished changes.
    • Published: The dictionary is saved with all changes published.
    Case sensitive Option to enable case sensitivity for all terms in the dictionary.

    For more details on case sensitivity, see Typo handling, Stop words, or Synonyms.
    Punctuation sensitive Option to enable punctuation sensitivity for all terms in the dictionary.

    For more details on punctuation sensitivity, see Typo handling, Stop words, or Synonyms.
    Derived Option to derive dictionary entries from indexed content. This field and the Derive Settings section only display when editing a typo handling dictionary.
    Derive Settings
    Indexed sources List of indexed sources. The dictionary derives auto-correction terms from content indexed for these sources. This field only displays when editing a typo handling dictionary.

    For more information on indexed sources, see Indexed sources in AI Search.
    Auto refresh Interval, in hours, after which derived typo handling entries automatically refresh. The minimum value is 24 hours. This field only displays when editing a typo handling dictionary.
    Blocked Fields Comma-separated list of fields. The dictionary excludes terms found in these fields when deriving typo handling auto-correction terms from indexed source records. This field only displays when editing a typo handling dictionary.
    You can specify fields using the following formats:
    • * (asterisk): Exclude terms found in all fields. This value disables derivation of typo-handling auto-corrections for the dictionary.
    • fieldname: Exclude terms found in the specified AI Search index field, such as title or text. For details on AI Search index fields, see AI Search index fields.
    • tablename.fieldname: Exclude terms found in the specified field on the specified ServiceNow AI Platform® table.
    • tablename.*: Exclude terms found in all fields in the specified ServiceNow AI Platform table.