Class: SummaryExtractor

Extract summary from a list of nodes.

Hierarchy

• BaseExtractor

  ↳ SummaryExtractor

Constructors

constructor

• new SummaryExtractor(options?): SummaryExtractor

Parameters

Name	Type
options?	SummaryExtractArgs

Returns

SummaryExtractor

Overrides

BaseExtractor.constructor

Defined in

packages/core/src/extractors/MetadataExtractors.ts:394

Properties

disableTemplateRewrite

• disableTemplateRewrite: boolean = false

Inherited from

BaseExtractor.disableTemplateRewrite

Defined in

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

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inPlace

• inPlace: boolean = true

Inherited from

BaseExtractor.inPlace

Defined in

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

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isTextNodeOnly

• isTextNodeOnly: boolean = true

Inherited from

BaseExtractor.isTextNodeOnly

Defined in

packages/core/src/extractors/types.ts:10

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llm

• llm: LLM<Record<string, unknown>>

LLM instance.

Defined in

packages/core/src/extractors/MetadataExtractors.ts:376

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metadataMode

• metadataMode: MetadataMode = MetadataMode.ALL

Inherited from

BaseExtractor.metadataMode

Defined in

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

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nextSummary

• Private nextSummary: boolean

Defined in

packages/core/src/extractors/MetadataExtractors.ts:392

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numWorkers

• numWorkers: number = 4

Inherited from

BaseExtractor.numWorkers

Defined in

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

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prevSummary

• Private prevSummary: boolean

Defined in

packages/core/src/extractors/MetadataExtractors.ts:391

---

promptTemplate

• promptTemplate: string

The prompt template to use for the summary extractor.

Defined in

packages/core/src/extractors/MetadataExtractors.ts:388

---

selfSummary

• Private selfSummary: boolean

Defined in

packages/core/src/extractors/MetadataExtractors.ts:390

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showProgress

• showProgress: boolean = true

Inherited from

BaseExtractor.showProgress

Defined in

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

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summaries

• summaries: string[]

List of summaries to extract: 'self', 'prev', 'next'

Defined in

packages/core/src/extractors/MetadataExtractors.ts:382

Methods

extract

▸ extract(nodes): Promise<{}[] | ExtractSummary[]>

Extract summaries from a list of nodes.

Parameters

Name	Type	Description
nodes	BaseNode<Metadata>[]	Nodes to extract summaries from.

Returns

Promise<{}[] | ExtractSummary[]>

Summaries extracted from the nodes.

Overrides

BaseExtractor.extract

Defined in

packages/core/src/extractors/MetadataExtractors.ts:443

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generateNodeSummary

▸ generateNodeSummary(node): Promise<string>

Extract summary from a node.

Parameters

Name	Type	Description
node	BaseNode<Metadata>	Node to extract summary from.

Returns

Promise<string>

Summary extracted from the node.

Defined in

packages/core/src/extractors/MetadataExtractors.ts:420

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processNodes

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

Parameters

Name	Type	Default value	Description
nodes	BaseNode<Metadata>[]	undefined	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

Defined in

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

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transform

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

Parameters

Name	Type
nodes	BaseNode<Metadata>[]
options?	any

Returns

Promise<BaseNode<Metadata>[]>

Inherited from

BaseExtractor.transform

Defined in

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