Description #

URL ratio calculator - Text feature extraction based on the proportion of URL characters

Key features #

• URL ratio calculation: Accurately calculates the proportion of URL characters in the text
• Multi-protocol support: Supports multiple URL protocols, such as HTTP and HTTPS
• Intelligent recognition: Uses regular expressions to accurately identify URL formats

Application scenarios #

• Text quality assessment
• Data cleaning and preprocessing
• Text classification feature extraction
• Content security detection
• Web content analysis

Technical characteristics #

• URL character ratio: The proportion of URL characters to the total number of characters
• Supports multiple URL formats, including but not limited to:
  • HTTP/HTTPS links
  • URLs with query parameters
  • URLs with anchors
  • URLs with ports

Operator parameters #

Input #

Output #

Column of ratio results, where each element is a floating-point number representing the proportion of URL characters

Examples #

The following code demonstrates how to use daft to run the operator and calculate the proportion of URL characters in text.

from __future__ import annotations

import os

import daft
from daft import col
from daft.las.functions.text.url_ratio_calculator import UrlRatioCalculator
from daft.las.functions.udf import las_udf

if __name__ == "__main__":

    if os.getenv("DAFT_RUNNER", "native") == "ray":
        import logging

        import ray

        def configure_logging():
            logging.basicConfig(
                level=logging.INFO,
                format="%(asctime)s - %(name)s - %(levelname)s - %(message)s",
                datefmt="%Y-%m-%d %H:%M:%S.%s".format(),
            )
            logging.getLogger("tracing.span").setLevel(logging.WARNING)
            logging.getLogger("daft_io.stats").setLevel(logging.WARNING)
            logging.getLogger("DaftStatisticsManager").setLevel(logging.WARNING)
            logging.getLogger("DaftFlotillaScheduler").setLevel(logging.WARNING)
            logging.getLogger("DaftFlotillaDispatcher").setLevel(logging.WARNING)

        ray.init(dashboard_host="0.0.0.0", runtime_env={"worker_process_setup_hook": configure_logging})
        daft.set_runner_ray()
    daft.set_execution_config(actor_udf_ready_timeout=600)
    daft.set_execution_config(min_cpu_per_task=0)

    samples = {
        "text": [
            "Hello world",
            "Check out https://example.com for more info",
            "Visit http://test.com and https://demo.org",
            "No URLs here, just text",
            "Mixed content: https://short.com and some text",
        ]
    }

    ds = daft.from_pydict(samples)
    ds = ds.with_column(
        "url_ratio",
        las_udf(
            UrlRatioCalculator,
            construct_args={},
        )(col("text")),
    )

    ds.show()
    # ╭────────────────────────────────┬────────────────────╮
    # │ text                           ┆ url_ratio          │
    # │ ---                            ┆ ---                │
    # │ String                         ┆ Float64            │
    # ╞════════════════════════════════╪════════════════════╡
    # │ Hello world                    ┆ 0                  │
    # ├╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌┼╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌┤
    # │ Check out https://example.com… ┆ 0.4418604651162791 │
    # ├╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌┼╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌┤
    # │ Visit http://test.com and htt… ┆ 0.7380952380952381 │
    # ├╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌┼╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌┤
    # │ No URLs here, just text        ┆ 0                  │
    # ├╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌┼╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌┤
    # │ Mixed content: https://short.… ┆ 0.3695652173913043 │
    # ╰────────────────────────────────┴────────────────────╯