class pixeltable.iterators.DocumentSplitter

Iterator over chunks of a document. The document is chunked according to the specified separators. The iterator yields a text field containing the text of the chunk, and it may also include additional metadata fields if specified in the metadata parameter, as explained below. Chunked text will be cleaned with ftfy.fix_text to fix up common problems with unicode sequences. How to init the DocumentSplitter class? Args: separators: separators to use to chunk the document. Options are: 'heading', 'paragraph', 'sentence', 'token_limit', 'char_limit', 'page'. This may be a comma-separated string, e.g., 'heading,token_limit'. elements: list of elements to extract from the document. Options are: 'text', 'image'. Defaults to ['text'] if not specified. The 'image' element is only supported for the 'page' separator on PDF documents. limit: the maximum number of tokens or characters in each chunk, if 'token_limit' or 'char_limit' is specified. metadata: additional metadata fields to include in the output. Options are: 'title', 'heading' (HTML and Markdown), 'sourceline' (HTML), 'page' (PDF), 'bounding_box' (PDF). The input may be a comma-separated string, e.g., 'title,heading,sourceline'. image_dpi: DPI to use when extracting images from PDFs. Defaults to 300. image_format: format to use when extracting images from PDFs. Defaults to ‘png’.

method close()

close() -> None

Close the iterator and release all resources

method create()

create(**kwargs: Any) -> tuple[type[ComponentIterator], dict[str, Any]]

method input_schema()

input_schema() -> dict[str, pixeltable.type_system.ColumnType]

Provide the Pixeltable types of the init() parameters The keys need to match the names of the init() parameters. This is equivalent to the parameters_types parameter of the @function decorator.

method output_schema()

output_schema(
    *args: Any,
    **kwargs: Any
) -> tuple[dict[str, pixeltable.type_system.ColumnType], list[str]]

Specify the dictionary returned by next() and a list of unstored column names Returns:

tuple[dict[str, pixeltable.type_system.ColumnType], list[str]]: a dictionary which is turned into a list of columns in the output table a list of unstored column names

method set_pos()

set_pos(pos: int) -> None

Set the iterator position to pos

​class pixeltable.iterators.DocumentSplitter

​method close()

​method create()

​method input_schema()

​method output_schema()

​method set_pos()