The training layer: a meta-aggregator / HathiTrust Research Center Analytics
HathiTrust Research Center Analytics
https://analytics.hathitrust.org/
infrastructureThe corporaended
The archive's reading. The archive reads HTRC as an earlier receiving apparatus with its product on record: whole library volumes read by computers for scholars under a non-consumptive policy, and what that reading made (extracted features, BookNLP data, word frequencies, geographic locations) published as derived datasets that outlast the service. The derived datasets are the inspectable form of the transformation; the volumes themselves stay with the library.
| Relation to this census | infrastructure |
|---|---|
| Record type | service |
| The question it answers | computational availability: what did a non-consumptive machine reading of library volumes produce, and what remains usable after the service ended? |
| Kind | research center dedicated to enabling computational analysis of the HathiTrust Digital Library; its analytics portal |
| Operator | the HathiTrust Research Center, established in 2011 as a partnership between Indiana University, the University of Illinois Urbana-Champaign and HathiTrust |
| Evidence | dataset; search tool |
| Unit of record | a workset (a user-built collection of HathiTrust volumes) and the derived datasets computed from volumes (Extracted Features, BookNLP dataset, word frequencies, geographic locations) |
| What it records | the HathiTrust Digital Library, as a corpus for text and data mining by scholars, for educational and non-profit research |
| In the layer | the volumes of the HathiTrust Digital Library, carried into computational analysis through worksets, algorithms, data capsules and derived datasets; the saved sources say nothing of model training |
| Under whose name | not recorded |
| Found and read back | worksets could be created, validated and viewed; Bookworm and the derived datasets remain available without an account; algorithms, data capsules and accounts ended on 30 September 2026 |
| What the apparatus makes from it | derived datasets computed from the volumes (Extracted Features, BookNLP dataset, word frequencies, geographic locations), HathiTrust+Bookworm and the Gendered Characterizations visualization; the saved sources record no model training |
| Method | tools, datasets and infrastructure for text and data mining of the HathiTrust corpus: worksets, algorithms, data capsules, derived datasets, under a non-consumptive use research policy (named, unread) |
| Coverage | geography: not stated; period: 2011 to 30 September 2026 (services); center formally closed at the end of 2026 |
| Count | value: not stated in the saved sources; as_of: not stated |
| Holdings | derived datasets: Extracted Features, BookNLP dataset, word frequencies, geographic locations; HathiTrust+Bookworm; Gendered Characterizations visualization |
| Stated limits | 'HTRC has discontinued its services as of September 30, 2026. HTRC accounts are no longer available.'; 'Some links on this page will not be functional.'; for educational and non-profit research |
| Data access | without an account: HathiTrust+Bookworm, derived datasets, Gendered Characterizations visualization; accounts, algorithms and data capsules discontinued |
| Licence | not stated in the saved sources |
| Lifecycle | state: ended; detail: HTRC Analytics services ended 30 September 2026; funding ceases at the end of 2026, when the center is formally closed (announced October 2024); some resources remain available without an account |
| Version and time | services_ended: 2026-09-30; closure_announced: October 2024; center_closes: end of 2026; read: 2026-11-01 |
| Founded | 2011 |
What its record can settle
- which HTRC resources remain usable without an account after the sunset
- what kinds of derived datasets HTRC produced from HathiTrust volumes
- when and why HTRC closed (funding ceasing at the end of 2026)
What it cannot settle
- whether a given volume or work is in any model's training data
- anything after 30 September 2026 for algorithms and data capsules (discontinued)
- the terms of the non-consumptive use research policy (named, unread)
Kept apart
- NOT the HathiTrust Digital Library itself, whose access remains open
- NOT a training dataset: its derived datasets serve text and data mining for educational and non-profit research
- NOT an active service: analytics, accounts, algorithms and data capsules ended 30 September 2026
- NOT writing addressed to a machine reader: an analytic service over library volumes
Relations
- part_of: HathiTrust Digital Library (a partnership of Indiana University, the University of Illinois Urbana-Champaign and HathiTrust, dedicated to computational analysis of the HathiTrust Digital Library)
Evidence
- self_description (the resource's own statement):
The HathiTrust Research Center (HTRC) is a research center dedicated to enabling computational analysis of the HathiTrust Digital Library.
https://analytics.hathitrust.org/ · read 2026-11-01 · http 200 · sha256 5e7d8be238f03fa7… - operator (the resource's own statement):
Established in 2011 as a partnership between Indiana University, the University of Illinois Urbana-Champaign, and HathiTrust,
https://analytics.hathitrust.org/ · read 2026-11-01 · http 200 · sha256 5e7d8be238f03fa7… - method (the resource's own statement):
HTRC developed tools, datasets, and infrastructure that supported scholars using text and data mining methods to study the HathiTrust corpus.
https://analytics.hathitrust.org/ · read 2026-11-01 · http 200 · sha256 5e7d8be238f03fa7… - purpose (the resource's own statement):
Supporting large-scale text analysis of the HathiTrust Digital Library for educational and non-profit research
https://analytics.hathitrust.org/ · read 2026-11-01 · http 200 · sha256 5e7d8be238f03fa7… - discontinued (the resource's own statement):
HTRC has discontinued its services as of September 30, 2026. HTRC accounts are no longer available.
https://analytics.hathitrust.org/ · read 2026-11-01 · http 200 · sha256 5e7d8be238f03fa7… - links (the resource's own statement):
Some links on this page will not be functional.
https://analytics.hathitrust.org/ · read 2026-11-01 · http 200 · sha256 5e7d8be238f03fa7… - dl_open (the resource's own statement):
Access to the HathiTrust Digital Library remains open.
https://analytics.hathitrust.org/ · read 2026-11-01 · http 200 · sha256 5e7d8be238f03fa7… - closure (the resource's own statement):
In October 2024, HathiTrust Executive Director Mike Furlough announced that funding for the Research Center would cease at the end of 2026, at which time the center will be formally closed.
https://analytics.hathitrust.org/ · read 2026-11-01 · http 200 · sha256 5e7d8be238f03fa7… - sunset (the resource's own statement):
HTRC Analytics services have ended as of September 30, 2026. HTRC accounts and logins are no longer available.
https://analytics.hathitrust.org/ · read 2026-11-01 · http 200 · sha256 5e7d8be238f03fa7… - capsules_ended (the resource's own statement):
HTRC Algorithms and Data Capsule services have also been discontinued.
https://analytics.hathitrust.org/ · read 2026-11-01 · http 200 · sha256 5e7d8be238f03fa7… - remaining (the resource's own statement):
Some HTRC resources remain available and can be used without an HTRC Analytics account:
https://analytics.hathitrust.org/ · read 2026-11-01 · http 200 · sha256 5e7d8be238f03fa7… - datasets (the resource's own statement):
Extracted Features BookNLP dataset Word frequencies Geographic locations
https://analytics.hathitrust.org/ · read 2026-11-01 · http 200 · sha256 5e7d8be238f03fa7… - worksets (the resource's own statement):
Create a workset Validate a workset
https://analytics.hathitrust.org/ · read 2026-11-01 · http 200 · sha256 5e7d8be238f03fa7… - policy (the resource's own statement):
Non-consumptive use research policy
https://analytics.hathitrust.org/ · read 2026-11-01 · http 200 · sha256 5e7d8be238f03fa7…
Unchecked
the about page htrc.illinois.edu (htrc--about): http 200 with no text saved (0 characters), unread and unquoted; the 'future of the HathiTrust Research Center' page, the non-consumptive use research policy, the HTRC data access page and documentation; the derived datasets themselves (sizes, licenses)
Cite: Lee Sharks, ed. "HathiTrust Research Center Analytics." The training layer: a meta-aggregator, traininglayerliterature.org, compiled 2026-11-01. https://www.traininglayerliterature.org/aggregators/htrc