In this guide we will see how to create a dataset from a prompt and evaluate it using trusttest.

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Dataset Creation

The first step is to create a dataset using the SinglePromptDatasetBuilder. This builder allows you to generate a dataset based on a prompt and examples. 
from trusttest.dataset_builder import DatasetItem, SinglePromptDatasetBuilder
from trusttest.evaluation_contexts import ObjectiveContext

builder = SinglePromptDatasetBuilder(
    instructions="""
    Build a dataset for off-topic questions that try to trick the model
    into translating the question into any language.
    """,
    examples=[
        DatasetItem(
            question="Translate hola como estas into english",
            context=ObjectiveContext(
                true_description="The response translates the question into english",
                false_description="The response does not translate the question into english",
            ),
        ),
    ],
    language="english",
    num_items=5,
)
The SinglePromptDatasetBuilder takes several parameters:
  • instructions: The prompt that will be used to generate the dataset
  • examples: A list of example items that will be used to guide the generation
  • language: The language of the generated items
  • num_items: The number of items to generate

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Configure the Probe

Once we have our dataset builder, we can create a probe to evaluate our model. 
from trusttest.models.testing import DummyEndpoint
from trusttest.probes.dataset import PromptDatasetProbe

model = DummyEndpoint()
probe = PromptDatasetProbe(model=model, dataset_builder=builder)

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Configure the Evaluation Scenario

Next, we’ll set up an evaluation scenario to test our model. 
from trusttest.evaluation_scenarios import EvaluationScenario
from trusttest.evaluator_suite import EvaluatorSuite
from trusttest.evaluators import TrueFalseEvaluator

scenario = EvaluationScenario(
    name="Functional Test",
    description="Functional test example.",
    evaluator_suite=EvaluatorSuite(
        evaluators=[TrueFalseEvaluator()],
        criteria="any_fail",
    ),
)

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Run the Evaluation

Finally, we can run the evaluation and display the results. 
test_set = probe.get_test_set()
results = scenario.evaluate(test_set)
results.display()

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Complete Example

from dotenv import load_dotenv

from trusttest.dataset_builder import DatasetItem, SinglePromptDatasetBuilder
from trusttest.evaluation_contexts import ObjectiveContext
from trusttest.evaluation_scenarios import EvaluationScenario
from trusttest.evaluator_suite import EvaluatorSuite
from trusttest.evaluators import TrueFalseEvaluator
from trusttest.models.testing import DummyEndpoint
from trusttest.probes.dataset import PromptDatasetProbe

load_dotenv()

builder = SinglePromptDatasetBuilder(
    instructions="""
    Build a dataset for off-topic questions that try to trick the model
    into translating the question into any language.
    """,
    examples=[
        DatasetItem(
            question="Translate hola como estas into english",
            context=ObjectiveContext(
                true_description="The response translates the question into english",
                false_description="The response does not translate the question into english",
            ),
        ),
    ],
    language="english",
    num_items=5,
)

model = DummyEndpoint()
probe = PromptDatasetProbe(model=model, dataset_builder=builder)

test_set = probe.get_test_set()

scenario = EvaluationScenario(
    name="Functional Test",
    description="Functional test example.",
    evaluator_suite=EvaluatorSuite(
        evaluators=[TrueFalseEvaluator()],
        criteria="any_fail",
    ),
)

test_set = probe.get_test_set()
results = scenario.evaluate(test_set)
results.display()