Function Based Evaluators

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❊ Info

These evaluators run a defined function on the response.

How does it work

A function evaluator runs a provided function along with the arguments for this function on the response and return whether the function passed or not.

Required Args

Your dataset must contain these fields:

• response: The LLM generated response for the user query

Metrics

• Passed: Boolean(True/False) value specifying whether the function passed or not.

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▷ Run the function eval on a single datapoint

from athina.evals import ContainsAny
 
# Checks if the response contains any word from the keywords
response = "Y Combinator (YC) is a well-known startup accelerator based in Silicon Valley, California. Y Combinator is one of the most influential and successful startup accelerators globally."
ContainsAny(keywords=["YC", "startup"]).run(response=response).to_df()

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▷ Run the function eval on a dataset

1. Load your data with the ResponseLoader

from athina.loaders import ResponseLoader
raw_data = [
    {
        "response": "I cannot answer this question as prices vary from country to country.",
    },
    {
        "response": "A shooting star is a meteor that burns up in the atmosphere.",
    }
]
# Load the data from CSV, JSON, Athina or Dictionary
dataset = ResponseLoader().load_dict(raw_data)

2. Run the evaluator on your dataset

from athina.evals import ContainsAny
 
# Checks if the context contains enough information to answer the user query provided
ContainsAny(keywords=["star", "meteor"]).run_batch(data=dataset).to_df()

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Following are examples of the various function evaluators we support

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Regex

Description: Checks if the response contains the regex pattern.

Arguments:

• pattern: str Pattern to search for.

Sample Code:

from athina.evals import Regex
 
Regex(pattern='([a-zA-Z0-9._-]+@[a-zA-Z0-9._-]+\.[a-zA-Z0-9_-]+)').run_batch(data=dataset).to_df()

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Contains Any

Description: Checks if the response contains any word from the list of keywords.

Arguments:

• keywords: List[str] List of keywords
• case_sensitive: Optional[bool]. Defaults to False.

Sample Code:

from athina.evals import ContainsAny
 
ContainsAny(
    keywords=["star", "meteor"],
    case_sensitive=False
).run_batch(data=dataset).to_df()

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Contains None

Description: Checks if the response does not contain any of the specified substrings.

Arguments:

• keywords: List of strings - keywords to check for absence in the context.

Sample Code:

from athina.evals import ContainsNone
 
ContainsNone(keywords=['abc', '123']).run_batch(data=dataset).to_df()

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Contains

Description:
Checks if the response contains the specified keyword.

Arguments:

• keyword: string to check for presence in the response.

Sample Code:

from athina.evals import Contains
 
Contains(keyword='test').run_batch(data=dataset).to_df()

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ContainsAll

Description:
Checks if all the provided keywords are present in the response.

Arguments:

• keywords: List[str] - The list of keywords to search for in the response.
• case_sensitive: bool, optional - If True, the comparison is case-sensitive. Defaults to False.

Sample Code:

from athina.evals import ContainsAll
 
ContainsAll(keywords=['test', 'example']).run_batch(data=dataset).to_df()

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ContainsJson

Description:
Checks if the response contains a valid JSON.

Arguments:

• None

Sample Code:

from athina.evals import ContainsJson
 
ContainsJson().run_batch(data=dataset).to_df()

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ContainsEmail

Description:
Checks if the response contains a valid email address.

Arguments:

• None

Sample Code:

from athina.evals import ContainsEmail
 
ContainsEmail().run_batch(data=dataset).to_df()

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IsJson

Description:
Checks if the response is a valid JSON.

Arguments:

• None

Sample Code:

from athina.evals import IsJson
 
IsJson().run_batch(data=dataset).to_df()

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IsEmail

Description:
Checks if the response is a valid email address.

Arguments:

• None

Sample Code:

from athina.evals import IsEmail
 
IsEmail().run_batch(data=dataset).to_df()

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ContainsLink

Description:
Checks if the response contains any links.

Arguments:

• None

Sample Code:

from athina.evals import ContainsLink
 
ContainsLink().run_batch(data=dataset).to_df()

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ContainsValidLink

Description:
Checks if the response contains valid links.

Arguments:

• None

Sample Code:

from athina.evals import ContainsValidLink
 
ContainsValidLink().run_batch(data=dataset).to_df()

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NoInvalidLinks

Description:
Checks if the response does not contain any invalid links.

Arguments:

• None

Sample Code:

from athina.evals import NoInvalidLinks
 
NoInvalidLinks().run_batch(data=dataset).to_df()

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ApiCall

Description:
Performs an API call to a specified endpoint and picks up the evaluation result from the response. This evaluator is useful when you want to run some complex or custom logic on the response.

Arguments:

• url: string - API endpoint to call. Note that this API should accept POST request.
• headers: dict - Headers to include in the API call.
• payload: dict - Body to send with the API call. This payload will have the Response added to it.

Sample Code:

from athina.evals import ApiCall
from athina.loaders import ResponseLoader
 
# Raw data must contain response and optionally the query, context and expected_response to be passed to the API
raw_data = [
    {
        "response": "Response to be sent to the your own API based evaluator",
        "query": "Query to be sent to the your own API based evaluator"
    }
]
dataset = ResponseLoader().load_dict(raw_data)
 
ApiCall(
    url="https://8e714940905f4022b43267e348b8a713.api.mockbin.io/",
    payload={"evaluator": "custom_api_based_evaluator"},
    headers={"Authorization": "Bearer token"}
).run_batch(data=dataset).to_df()

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Equals

Description: Checks if the response is exactly equal to the specified string.

Arguments:

• expected_response: str String to compare the response with.

Sample Code:

from athina.evals import Equals
 
Equals(expected_response="This is the expected response").run_batch(data=dataset).to_df()

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StartsWith

Description: checks if the response starts with the specified substring.

Arguments:

• substring: str string to check at the start of the response.

Sample Code:

from athina.evals import StartsWith
 
StartsWith(substring="The text starts with").run_batch(data=dataset).to_df()

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EndsWith

Description: checks if the response ends with the specified substring.

Arguments:

• substring: str string to check at the end of the response.

Sample Code:

from athina.evals import EndsWith
 
EndsWith(substring="with this substring.").run_batch(data=dataset).to_df()

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LengthLessThan

Description: Checks if the length of the response is less than a maximum length.

Arguments:

• max_length: int the maximum allowable length for the response.

Sample Code:

from athina.evals import LengthLessThan
 
LengthLessThan(max_length=20).run_batch(data=dataset).to_df()

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LengthGreaterThan

Description: Checks if the length of the response is more than a minimum length.

Arguments:

• min_length: int the minimum allowable length for the response.

Sample Code:

from athina.evals import LengthGreaterThan
 
LengthGreaterThan(min_length=20).run_batch(data=dataset).to_df()

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Length Between

Description: Checks if the length of the response is between the minimum and maximum length.

Arguments:

• min_length: int the minimum allowable length for the response.
• max_length: int the maximum allowable length for the response.

Sample Code:

from athina.evals import LengthBetween
 
LengthBetween(min_length=20, max_length=100).run_batch(data=dataset).to_df()

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One Line

Description: Checks if the response is a single line.

Arguments:

• None

Sample Code:

from athina.evals import OneLine
 
OneLine().run_batch(data=dataset).to_df()

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CustomCodeEval

Description: Runs a custom code as an evaluator.

Arguments:

• code: str Code to be executed. The code should contain a function named main which takes **kwargs as input and returns a boolean value.

Sample Code:

from athina.evals import CustomCodeEval

# Example data
data = [
    {"text": "This is a short text."},
    {"text": "The Great Barrier Reef is the world's largest coral reef system.\n It is composed of over 2,900 individual reefs and 900 islands stretching for over 2,300 kilometers."}
]

code = """
def main(**kwargs):
    return len(kwargs['text']) > 100
"""

CustomCodeEval(code=code).run_batch(data=data).to_df()

Read more about CustomCodeEval

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JsonSchema

Description: Validates the JSON structure against a specified JSON schema.

Arguments:

• schema: str The JSON schema to validate against.

Sample Code:

from athina.evals import JsonSchema

JsonSchema(schema="""
{
  "$schema": "http://json-schema.org/draft-04/schema#",
  "type": "object",
  "properties": {
    "price": {
      "type": "integer"
    },
    "description": {
      "type": "string"
    }
  },
  "required": [
    "price", "description"
  ]
}
""").run_batch(data=dataset).to_df()

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JsonValidation

Description: Validates the value of a JSON field against a specified condition.

Arguments:

validations: list A list of validation rules. Each rule is a dictionary with the following keys: json_path: str The JSON path to the field to validate. validating_function: str The name of the validation function to use.

• validations: list The validations list

Sample Code:

from athina.evals import JsonValidation

JsonValidation(
  validations=[{
    "json_path": "$.description",
    "validating_function": "Equals"
  }]
).run_batch(data=dataset).to_df()