# datasets – Axolotl

# datasets

`datasets`

Module containing Dataset functionality

## Classes

Name | Description
--- | ---
ConstantLengthDataset | Iterable dataset that returns constant length chunks of tokens from stream of
TokenizedPromptDataset | Dataset that returns tokenized prompts from a stream of text files.

### ConstantLengthDataset

    datasets.ConstantLengthDataset(tokenizer, datasets, seq_length=2048)

Iterable dataset that returns constant length chunks of tokens from stream of text files.

#### Parameters

Name | Type | Description | Default
--- | --- | --- | ---
tokenizer |  | The processor used for processing the data. | required
dataset |  | Dataset with text files. | required
seq_length |  | Length of token sequences to return. | `2048`

### TokenizedPromptDataset

    datasets.TokenizedPromptDataset(
        prompt_tokenizer,
        dataset,
        process_count=None,
        keep_in_memory=False,
        **kwargs,
    )

Dataset that returns tokenized prompts from a stream of text files.

#### Parameters

Name | Type | Description | Default
--- | --- | --- | ---
prompt_tokenizer | PromptTokenizingStrategy | The prompt tokenizing method for processing the data. | required
dataset | Dataset | Dataset with text files. | required
process_count | int | None | Number of processes to use for tokenizing. | `None`
keep_in_memory | bool | None | Whether to keep the tokenized dataset in memory. | `False`