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Class: TitleExtractor

Extract title from a list of nodes.

Extends​

Constructors​

new TitleExtractor()​

new TitleExtractor(options?): TitleExtractor

Constructor for the TitleExtractor class.

Parameters​

• options?: TitleExtractorsArgs

Returns​

TitleExtractor

Overrides​

BaseExtractor . constructor

Source​

packages/llamaindex/src/extractors/MetadataExtractors.ts:147

Properties​

combineTemplate​

combineTemplate: string

The prompt template to merge title with..

Source​

packages/llamaindex/src/extractors/MetadataExtractors.ts:138

disableTemplateRewrite​

disableTemplateRewrite: boolean = false

Inherited from​

BaseExtractor . disableTemplateRewrite

Source​

packages/llamaindex/src/extractors/types.ts:13

inPlace​

inPlace: boolean = true

Inherited from​

BaseExtractor . inPlace

Source​

packages/llamaindex/src/extractors/types.ts:14

isTextNodeOnly​

isTextNodeOnly: boolean = false

Can work for mixture of text and non-text nodes

Default​

false

Overrides​

BaseExtractor . isTextNodeOnly

Source​

packages/llamaindex/src/extractors/MetadataExtractors.ts:119

llm​

llm: LLM<object, object>

LLM instance.

Source​

packages/llamaindex/src/extractors/MetadataExtractors.ts:112

metadataMode​

metadataMode: MetadataMode = MetadataMode.ALL

Inherited from​

BaseExtractor . metadataMode

Source​

packages/llamaindex/src/extractors/types.ts:12

nodeTemplate​

nodeTemplate: string

The prompt template to use for the title extractor.

Source​

packages/llamaindex/src/extractors/MetadataExtractors.ts:132

nodes​

nodes: number = 5

Number of nodes to extrct titles from.

Default​

5

Source​

packages/llamaindex/src/extractors/MetadataExtractors.ts:126

numWorkers​

numWorkers: number = 4

Inherited from​

BaseExtractor . numWorkers

Source​

packages/llamaindex/src/extractors/types.ts:15

showProgress​

showProgress: boolean = true

Inherited from​

BaseExtractor . showProgress

Source​

packages/llamaindex/src/extractors/types.ts:11

Methods​

extract()​

extract(nodes): Promise<ExtractTitle[]>

Extract titles from a list of nodes.

Parameters​

• nodes: BaseNode <Metadata>[]

Nodes to extract titles from.

Returns​

Promise<ExtractTitle[]>

Titles extracted from the nodes.

Overrides​

BaseExtractor . extract

Source​

packages/llamaindex/src/extractors/MetadataExtractors.ts:164

extractTitles()​

private extractTitles(nodesByDocument): Promise<Record<string, string>>

Parameters​

• nodesByDocument: Record<string, BaseNode <Metadata>[]>

Returns​

Promise<Record<string, string>>

Source​

packages/llamaindex/src/extractors/MetadataExtractors.ts:212

filterNodes()​

private filterNodes(nodes): BaseNode <Metadata>[]

Parameters​

• nodes: BaseNode <Metadata>[]

Returns​

BaseNode <Metadata>[]

Source​

packages/llamaindex/src/extractors/MetadataExtractors.ts:181

getTitlesCandidates()​

private getTitlesCandidates(nodes): Promise<string[]>

Parameters​

• nodes: BaseNode <Metadata>[]

Returns​

Promise<string[]>

Source​

packages/llamaindex/src/extractors/MetadataExtractors.ts:232

processNodes()​

processNodes(nodes, excludedEmbedMetadataKeys, excludedLlmMetadataKeys): Promise <BaseNode <Metadata>[]>

Parameters​

• nodes: BaseNode <Metadata>[]

Nodes to extract metadata from.

• excludedEmbedMetadataKeys: undefined | string[]= undefined

Metadata keys to exclude from the embedding.

• excludedLlmMetadataKeys: undefined | string[]= undefined

Metadata keys to exclude from the LLM.

Returns​

Promise <BaseNode <Metadata>[]>

Metadata extracted from the nodes.

Inherited from​

BaseExtractor . processNodes

Source​

packages/llamaindex/src/extractors/types.ts:34

separateNodesByDocument()​

private separateNodesByDocument(nodes): Record<string, BaseNode <Metadata>[]>

Parameters​

• nodes: BaseNode <Metadata>[]

Returns​

Record<string, BaseNode <Metadata>[]>

Source​

packages/llamaindex/src/extractors/MetadataExtractors.ts:190

transform()​

transform(nodes, options?): Promise <BaseNode <Metadata>[]>

Parameters​

• nodes: BaseNode <Metadata>[]

• options?: any

Returns​

Promise <BaseNode <Metadata>[]>

Inherited from​

BaseExtractor . transform

Source​

packages/llamaindex/src/extractors/types.ts:19