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split_dataset

Split a dataset into training, validation, and test sets using methods like random, stratified, time-series, or group-based partitioning.

Instructions

Split dataset into train/validation/test sets

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
dataset_nameYesName of the dataset to split
split_methodYesMethod for splitting the dataset
test_sizeNoProportion of data for test set
val_sizeNoProportion of data for validation set (creates 70/20/10 split by default)
target_columnNoTarget column for stratified splitting
time_columnNoTime column for time-series splitting
group_columnNoGroup column for group-based splitting
random_stateNoRandom seed for reproducibility
Behavior2/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Without annotations, the description carries the full burden but only states the action. It does not disclose whether the original dataset is modified or copied, or any side effects or return values.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single concise sentence that front-loads the purpose. While efficient, it may be too terse given the tool's complexity with 8 parameters.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool's complexity (8 parameters, no output schema, no annotations), the description is insufficient. It does not explain split methods or parameter interplay, leaving the agent with gaps.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100%, so the baseline is 3. The description adds no additional parameter context beyond the schema, which already describes each parameter.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool splits a dataset into train/validation/test sets, which distinguishes it from sibling tools like clean_dataset or preprocess_dataset. However, it could be more explicit about the splitting methods or whether it modifies the original dataset.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

No guidance is provided on when to use this tool versus alternatives, such as before training or after preprocessing. There are no prerequisites or exclusions mentioned.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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