CNKI Overseas
Latest screenshot: 2024-07-24
Access to search interface:
open
Last major interface update:
N/A
Owner of search system:
Tsinghua Tongfang Knowledge Network Technology Co., Ltd.
Location of system headquarters:
Beijing, CN
Year of launch:
1995
Type:
Search engine
Twitter:
Description of database (by system owner)
Of all non-English records, for 945k records the language is known. Of these 97% are English.
Description of search system (by system owner)
CNKI is the largest Chinese academic content resources provider in the world, who is dedicated to the mass digitization of China knowledge resources. - Over 1,600 institutional customers overseas across 60 countries and regions, 32,000 institutional customers from a various of industries in Chinese mainland. - Core users ranging from top universities, research institutes, government think-tanks, enterprises, hospitals to public libraries. - Over 200 million end users, over 16 million daily visits, as well as 2.33 billion full-text downloads in 2021.
Total coverage:
123.40M
Year-over-year growth (2020-2021):
-33.04%
Subject coverage:
Multidisciplinary
Retrospective coverage:
1755–2024
Record types:
3
Open Access records:
N/A
Search functionality and interface
Systematic keyword searching:
limited
Backward citation searching:
limited
Forward citation searching:
limited
Query builder:
Search history:
Match preview:
Sorting options:
2
Query
Latency with short query:
3.2 seconds
Latency with long query:
1.85 seconds
Controlled vocabulary:
Field codes:
18
Full text search:
Search string length (narrow):
9000 terms max.
Search string length (wide):
9000 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:
5
Boolean 'OR':
Boolean 'AND':
Boolean 'NOT':
Proximity operator:
Boolean works exact:
Nested search (parentheses):
Citation search / filtering
Record type filters:
3
Results filters:
9
Suggested related records:
Supported by bibliometric tools:
CiteSpace
Backward citation information:
Backward citation score:
N/A
Forward citation information:
Forward citation score:
N/A
Retrieval
Number of accessible records:
6000
Bulk select records:
Bulk export records:
50
Export formats:
13
API:
no
Bulk select records' backward citations:
Bulk export backward citations:
N/A
Bulk select records' forward citations:
Bulk export forward citations:
N/A
