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UpdateSemanticSearchIndex[index,source]

updates the SemanticSearchIndex[…] index with the data in source.

UpdateSemanticSearchIndex[index,{source1, …}]

updates the SemanticSearchIndex[…] index with the collection of sources sourcei.

UpdateSemanticSearchIndex[index,{source1 val1, …}]

associates the new source sourcei to the value vali.

Details and Options
Details and Options Details and Options
Examples  
Basic Examples  
Scope  
Data Sources  
Annotations  
Applications  
Properties & Relations  
Possible Issues  
See Also
Related Guides
History
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UpdateSemanticSearchIndex

UpdateSemanticSearchIndex[index,source]

updates the SemanticSearchIndex[…] index with the data in source.

UpdateSemanticSearchIndex[index,{source1, …}]

updates the SemanticSearchIndex[…] index with the collection of sources sourcei.

UpdateSemanticSearchIndex[index,{source1 val1, …}]

associates the new source sourcei to the value vali.

Details and Options

  • UpdateSemanticSearchIndex extends an existing SemanticSearchIndex with additional data, expanding the index’s storage and search capabilities.
  • Valid index specifications are:
  • "name"a string matching a named semantic search index
    SemanticSearchIndex[…]a valid SemanticSearchIndex object
  • Possible values for source are:
  • "string"a plain string
    File["path"]individual file
    URL["url"]the text representation of "url"
    CloudObject[…]a cloud object
    LocalObject[…]a local object
    ContentObject[…]a content object
    {source1,source2,…}list of sources
  • If index contains annotated sources, each new source should be annotated the same way. »
  • Possible ways to specify annotations include:
  • {source1val1,…}a list of sources and associated values
    {source1,…}{val1,…}a rule between sources and values
  • Accepted forms of annotation values vali include:
  • "string"string labels
    <|"tag1"v1,…|>an association of tags and metadata values
  • UpdateSemanticSearchIndex supports the following options:
  • MethodAutomaticmethod details
    ProgressReporting$ProgressReportingwhether to report the progress of the computation
  • Detailed options can be given using Method<|opt1val1|>. Possible values for opti are:
  • "ContextPadding"minimal overlap between chunks
    "MaximumItemLength"maximum length of a text chunk
    "MinimumItemLength"minimum length of a text chunk
    "SplitPattern"Automaticwhere to split long strings
  • The automatic "SplitPattern" tries to split a source text in paragraphs, newlines and words to create chunks between "MinimumItemLength" and "MaximumItemLength".

Examples

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Basic Examples  (2)

Create a semantic search index:

Wolfram Language code: index = CreateSemanticSearchIndex[ResourceData["Alice in Wonderland"], "Books"]

Update the index with one more source:

Wolfram Language code: UpdateSemanticSearchIndex[index, ResourceData["Faust"]]

Update an index with multiple new sources:

Wolfram Language code: index = CreateSemanticSearchIndex[ResourceData["Friends, Romans, Countrymen"]]
Wolfram Language code: UpdateSemanticSearchIndex[index, {File["ExampleData/USConstitution.txt"], URL["http://www.wolfram.com"]}]

Scope  (6)

Data Sources  (3)

Update an index with a string:

Wolfram Language code: index = CreateSemanticSearchIndex[{"Cats are playful and curious creatures."}]
Wolfram Language code: UpdateSemanticSearchIndex[index, "Cats, with their mysterious charm and playful antics, effortlessly capture our hearts, prancing gracefully through sunbeams, curling up in cozy spots, and purring softly, reminding us of the joy they bring."]

Update an index with a file:

Wolfram Language code: index = CreateSemanticSearchIndex[{"Cats are playful and curious creatures."}]
Wolfram Language code: UpdateSemanticSearchIndex[index, File["ExampleData/USConstitution.txt"]]

Update an index with a URL:

Wolfram Language code: index = CreateSemanticSearchIndex[{"Cats are playful and curious creatures."}]
Wolfram Language code: UpdateSemanticSearchIndex[index, URL["http://www.wolfram.com"]]

Annotations  (3)

Update an index that has labels:

Wolfram Language code: index = CreateSemanticSearchIndex[ResourceData["Friends, Romans, Countrymen"] -> "William Shakespeare"]
Wolfram Language code: UpdateSemanticSearchIndex[index, ResourceData["Alice in Wonderland"] -> "Lewis Carroll"]

Update an index with tags in an Association:

Wolfram Language code: index = CreateSemanticSearchIndex[ResourceData["Friends, Romans, Countrymen"] -> <|"Author" -> "William Shakespeare"|>]
Wolfram Language code: UpdateSemanticSearchIndex[index, ResourceData["Friends, Romans, Countrymen"] -> <|"Author" -> "William Shakespeare"|>]

Update an index with multiple tags in an Association:

Wolfram Language code: index = CreateSemanticSearchIndex[ResourceData["Friends, Romans, Countrymen"] -> <|"Author" -> "William Shakespeare", "Date" -> 1623|>]
Wolfram Language code: UpdateSemanticSearchIndex[index, {ResourceData["Alice in Wonderland"], ResourceData["Through the Looking Glass"]} -> {<|"Author" -> "Lewis Carroll", "Date" -> 1865|>, <|"Author" -> "Lewis Carroll", "Date" -> 1871|>}]

Applications  (1)

Create an index with the default split pattern:

Wolfram Language code: index = CreateSemanticSearchIndex[ResourceData["Alice in Wonderland"]]

Update the index with an input that requires a different splitting technique:

Wolfram Language code: UpdateSemanticSearchIndex[index, ResourceData["Shakespeare's Sonnets"], Method -> <|"SplitPattern" -> RegularExpression[" ?[IVXL]+ "], "MinimumItemLength" -> 16|>]

Properties & Relations  (1)

The feature extractor used by UpdateSemanticSearchIndex is inherited from the index:

Wolfram Language code: index = CreateSemanticSearchIndex[{"text one", "text two"}, FeatureExtractor -> Function[s, RandomReal[1, {Length[s], 10}]]];

Retrieve the feature extractor:

Wolfram Language code: index["FeatureExtractor"]

Possible Issues  (1)

Create an index with labels:

Wolfram Language code: index = CreateSemanticSearchIndex[{"text one" -> "A", "text two" -> "B"}]

Attempting to update the index using a source without labels will fail:

Wolfram Language code: UpdateSemanticSearchIndex[index, {"text three"}]

New indices must include the relevant metadata:

Wolfram Language code: UpdateSemanticSearchIndex[index, {"text three" -> "C"}]
Wolfram Research (2024), UpdateSemanticSearchIndex, Wolfram Language function, https://reference.wolfram.com/language/ref/UpdateSemanticSearchIndex.html (updated 2025).

Text

Wolfram Research (2024), UpdateSemanticSearchIndex, Wolfram Language function, https://reference.wolfram.com/language/ref/UpdateSemanticSearchIndex.html (updated 2025).

CMS

Wolfram Language. 2024. "UpdateSemanticSearchIndex." Wolfram Language & System Documentation Center. Wolfram Research. Last Modified 2025. https://reference.wolfram.com/language/ref/UpdateSemanticSearchIndex.html.

APA

Wolfram Language. (2024). UpdateSemanticSearchIndex. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/UpdateSemanticSearchIndex.html

BibTeX

@misc{reference.wolfram_2026_updatesemanticsearchindex, author="Wolfram Research", title="{UpdateSemanticSearchIndex}", year="2025", howpublished="\url{https://reference.wolfram.com/language/ref/UpdateSemanticSearchIndex.html}", note=[Accessed: 12-June-2026]}

BibLaTeX

@online{reference.wolfram_2026_updatesemanticsearchindex, organization={Wolfram Research}, title={UpdateSemanticSearchIndex}, year={2025}, url={https://reference.wolfram.com/language/ref/UpdateSemanticSearchIndex.html}, note=[Accessed: 12-June-2026]}