Few Shot

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Node Details

• Name: fewShotPromptTemplate

• Type: FewShotPromptTemplate

• Version: 1.0

• Category: Prompts

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Base Classes

• FewShotPromptTemplate

• BasePromptTemplate

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Parameters

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Inputs

1. Examples (Required)

   • Type: string (JSON)

   • Description: Array of example objects with key-value pairs

   • Example:

     [
       { "word": "happy", "antonym": "sad" },
       { "word": "tall", "antonym": "short" }
     ]
     

2. Example Prompt (Required)

   • Type: PromptTemplate

   • Description: Template for formatting individual examples

3. Prefix (Optional)

   • Type: string

   • Description: Text appearing before the examples

   • Example: “Give the antonym of every input”

4. Suffix (Required)

   • Type: string

   • Description: Text after examples, containing input variable

   • Example: “Word:

     \nAntonym:”

5. Example Separator (Optional)

   • Type: string

   • Default: “\n\n”

   • Description: String used to separate examples

6. Template Format (Optional)

   • Type: options

   • Options: [“f-string”, “jinja-2”]

   • Default: “f-string”

   • Description: Format style for template strings

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Functionality

1. Example Processing

   • JSON parsing

   • Example formatting

   • Template application

   • Separator handling

2. Template Management

   • Format selection

   • Variable extraction

   • Context building

   • Structure validation

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Use Cases

1. Pattern Teaching

   • Response formatting

   • Style demonstration

   • Behavior guidance

   • Context setting

2. Complex Tasks

   • Multi-step processes

   • Format standardization

   • Response structuring

   • Pattern recognition

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Integration Notes

• Uses @langchain/core/prompts

• Supports multiple example formats

• Handles variable extraction

• Manages template formatting

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Best Practices

1. Example Design

   • Clear demonstrations

   • Consistent formatting

   • Diverse examples

   • Progressive complexity

2. Template Structure

   • Compatible formats

   • Clear separators

   • Proper variables

   • Consistent style

3. Performance Optimization

   • Efficient examples

   • Minimal redundancy

   • Clear instructions

   • Optimal spacing