Class: KeywordExtractor

Extract keywords from a list of nodes.

Hierarchy

• BaseExtractor

  ↳ KeywordExtractor

Constructors

constructor

• new KeywordExtractor(options?): KeywordExtractor

Constructor for the KeywordExtractor class.

Parameters

Name	Type
options?	KeywordExtractArgs

Returns

KeywordExtractor

Throws

If keywords is less than 1.

Overrides

BaseExtractor.constructor

Defined in

packages/core/src/extractors/MetadataExtractors.ts:46

Properties

disableTemplateRewrite

• disableTemplateRewrite: boolean = false

Inherited from

BaseExtractor.disableTemplateRewrite

Defined in

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

---

inPlace

• inPlace: boolean = true

Inherited from

BaseExtractor.inPlace

Defined in

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

---

isTextNodeOnly

• isTextNodeOnly: boolean = true

Inherited from

BaseExtractor.isTextNodeOnly

Defined in

packages/core/src/extractors/types.ts:9

---

keywords

• keywords: number = 5

Number of keywords to extract.

Default

5

Defined in

packages/core/src/extractors/MetadataExtractors.ts:38

---

llm

• llm: LLM

LLM instance.

Defined in

packages/core/src/extractors/MetadataExtractors.ts:31

---

metadataMode

• metadataMode: MetadataMode = MetadataMode.ALL

Inherited from

BaseExtractor.metadataMode

Defined in

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

---

numWorkers

• numWorkers: number = 4

Inherited from

BaseExtractor.numWorkers

Defined in

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

---

showProgress

• showProgress: boolean = true

Inherited from

BaseExtractor.showProgress

Defined in

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

Methods

extract

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

Parameters

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

Returns

Promise<ExtractKeyword[] | {}[]>

Keywords extracted from the nodes.

Overrides

BaseExtractor.extract

Defined in

packages/core/src/extractors/MetadataExtractors.ts:83

---

extractKeywordsFromNodes

▸ extractKeywordsFromNodes(node): Promise<{} | ExtractKeyword>

Parameters

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

Returns

Promise<{} | ExtractKeyword>

Keywords extracted from the node.

Defined in

packages/core/src/extractors/MetadataExtractors.ts:61

---

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:33

---

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:18