HTRC Extracted Features

HTRC Extracted Features dataset​

• Public domain, downloadable

• Structured data consisting of human-supplied (catalog) metadata and algorithmically-derived features

• From 17.1 million volumes (i.e., not quite in sync with HTDL)

• Linked-data compliant (JSON-LD)

HTRC Extracted Features (EF)

The features are:

• Volume- and page-level

• Selected data and metadata

• Extracted from raw text

Position the researcher to begin analysis

• Some standard natural language & statistical preprocessing is already done

Per-volume features

Excerpted from catalog metadata, including:

• Title

• Author

• Language

• Publication data

• Identifiers

• [Subjects]

HTRC Extracted Features API documentation is available here: https://htrc.stoplight.io/docs/ef-api/06db4dc572b49-ef​

API CALLS

• GET EF data for a volume by volume id

  • https://tools.htrc.illinois.edu/ef-api/volumes/{clean-htid}

• Check if a volume exists (HEAD)

  • https://tools.htrc.illinois.edu/ef-api/volumes/{clean-htid}

• GET volume metadata by volume id

  • https://tools.htrc.illinois.edu/ef-api/volumes/{clean-htid}/metadata

• GET subset of pages of volume by volume id

  • https://tools.htrc.illinois.edu/ef-api/volumes/{clean-htid}/pages

• Create workset (POST)

  • https://tools.htrc.illinois.edu/ef-api/worksets

• DELETE workset by workset id

  • https://tools.htrc.illinois.edu/ef-api/worksets/{workset-id}

• GET workset

  • https://tools.htrc.illinois.edu/ef-api/worksets/{workset-id}

• GET workset volumes by workset id

  • https://tools.htrc.illinois.edu/ef-api/worksets/{workset-id}/volumes

• GET workset volumes metadata by workset id o

  • https://tools.htrc.illinois.edu/ef-api/worksets/{workset-id}/metadata

OBSERVABLE Notebooks

OBSERVABLE DOCUMENTATION (comprehensive)

OBSERVABLE DOCUMENTATION (shorter)

• Exploring API

• Word Cloud

• Contributor Map