Screenshot of HAL
Latest screenshot: 2024-07-02
Access to search interface:
open
Last major interface update:
2022-09-30
Owner of search system:
Centre pour la communication scientifique directe (CCSD)
Location of system headquarters:
Villeurbanne, FR
Year of launch:
2001
Type:
Repository
Twitter:
Description of search system (by system owner)

HAL is a multidisciplinary open archive for the sharing of published and unpublished research. It is at the service of researchers in academic institutions, both public and private. In France, HAL is the national archive chosen by the scientific and academic community for the open dissemination of its research results. The repository is also at the service of researchers affiliated to foreign academic institutions, whether public or private. HAL is both: - a software, - a unique and multidisciplinary repository (see domain list), - and a shared platform for more than 140 institutional archives of universities and research organizations, an open repository dedicated to Human and Social Sciences (HAL-SHS), an open repository for the dissemination of PhD thesis, and an open repository for visual and audio data (MediHAL).

Notes

Interface is French/English. Most content is English.

Total coverage:
3.59M
Year-over-year growth (2022-2023):
-19.92%
Subject coverage:
Multidisciplinary
Retrospective coverage:
1873–2024
Record types:
20
Open Access records:
3.59M / 100.00%

Search functionality and interface

Systematic keyword searching:
extensive 
Backward citation searching:
limited 
Forward citation searching:
limited 
Query builder:
Search history:
Match preview:
Sorting options:
9

Query

Latency with short query:
20 seconds
Latency with long query:
6.5 seconds
Controlled vocabulary:
Field codes:
112
Full text search:
Search string length (narrow):
250 terms max.
Search string length (wide):
250 terms max.
Language support: Chinese:
Language support: Cyrillic:
Truncation:
Wildcards:
Keyword position irrelevant:
Longer strings, fewer hits:
Automatic query expansion (stemming):
Verbatim queries:
Reproducible queries (time):
Reproducible queries (locations):

Operators

Search operators:
4
Boolean 'OR':
Boolean 'AND':
Boolean 'NOT':
Proximity operator:
Boolean works exact:
Nested search (parentheses):

Citation search / filtering

Record type filters:
20
Results filters:
9
Suggested related records:
Supported by bibliometric tools:
N/A
Backward citation information:
Backward citation score:
N/A
Forward citation information:
Forward citation score:
N/A

Retrieval

Number of accessible records:
117700
Bulk select records:
Bulk export records:
1000
Export formats:
9
API:
open 
Bulk select records' backward citations:
Bulk export backward citations:
N/A
Bulk select records' forward citations:
Bulk export forward citations:
N/A
Pinned databases 0/6
Trusted by
JKU LinzUniversität Innsbruck
Funded by
FWF