Get an email when this journal's indexing changes
Added to or removed from Scopus, Web of Science, ABDC, DOAJ, FT50, UT Dallas or ONOS. One confirmation click; unsubscribe anytime.
Complex and Intelligent Systems is Scopus-indexed (Q1, CiteScore 11.6), WoS SCIE, DOAJ. It is covered by India's One Nation One Subscription scheme, which pays the article processing charge for authors at eligible institutions. Published by Springer International Publishing AG.
Checked against the index lists dated .
ISSN 2198-6053Verify ISSN ↗2199-4536Verify ISSN ↗
Publisher: Springer International Publishing AG
Cost to publish: APC covered for authors at ONOS-subscribed Indian institutions
| Subject area | Rank | Pctile | Q |
|---|---|---|---|
| Computational Mathematics | 7 / 212 | 96th | Q1 |
| Engineering (miscellaneous) | 26 / 300 | 91st | Q1 |
| Information Systems | 57 / 519 | 89th | Q1 |
| Artificial Intelligence | 73 / 570 | 87th | Q1 |
Not listed in: ABDC, ABS / AJG, FT50, UT Dallas, ONOS (subscription)
Yes — actively indexed in Scopus, coverage 2019–present, best quartile Q1, CiteScore 11.6.
Complex and Intelligent Systems is Q1 in Computational Mathematics (rank 7 of 212), Q1 in Engineering (miscellaneous) (rank 26 of 300) and Q1 in Information Systems (rank 57 of 519), by CiteScore 2025. It is ranked in 4 subject areas in all.
Complex and Intelligent Systems is indexed in the Science Citation Index Expanded, so it may have a Journal Impact Factor in Clarivate's Journal Citation Reports. JCR is paid, so check it for the current value. The closest free measure is its Scopus CiteScore 11.6, which places it in quartile Q1 at the 96th percentile of its subject. Its SCImago Journal Rank (SJR, a free Scopus-based metric) is 1.085, quartile Q1, with an H-index of 73.
For authors at Indian institutions covered by One Nation One Subscription (ONOS), the article processing charge is paid by the scheme. The publisher lists an article processing charge of about US$2,490 for open access (source: OpenAlex). Many journals also publish by the subscription route at no cost to the author, so confirm on the journal's own website.
Complex and Intelligent Systems is published by Springer International Publishing AG. Its print ISSN is 2198-6053 and its online ISSN is 2199-4536.
Yes. ONOS also covers its article processing charge for authors at eligible institutions.
Yes — indexed in the Science Citation Index Expanded.
Yes — it is an open-access journal, listed in DOAJ.
Complex and Intelligent Systems has an h-index of 90 and a 2-year mean of 5.33 citations per paper (OpenAlex). Its Scopus CiteScore is 11.6, quartile Q1. On 2-year citations it ranks #9 of 193 Scopus journals in Computational Mathematics.
Complex and Intelligent Systems published 468 papers in 2025. 2026* is the year so far.
h-index, i10-index and 2-year mean citedness are open, licence-clear metrics from OpenAlex — not a proprietary impact factor. The subject rank counts only journals that OpenAlex has a figure for; it is not a Scopus or Clarivate ranking. Updated 2026-10-14.
In its latest 98 research articles (2026), authors are most often from China (67.7%), India (9.3%) and Australia (2.8%). More than half of recent authorship comes from one country.
Countries are counted fractionally, so a paper by authors from two countries counts half to each.
Scopus status: Active. 7 retracted papers are recorded (2.9 per 1,000 papers). The Problematic Paper Screener flags 6 of its papers. These are indicators to check, not findings against the journal.
Retractions from OpenAlex; flags from the Problematic Paper Screener (Cabanac, Labbé & Magazinov, CC BY), 2026-09-21 export. A flag marks a paper for a closer look; it is not a finding against the journal.
Index data is curated from public sources (Scopus, Web of Science, ABDC, FT50, UT Dallas, DOAJ). CiteScore and quartiles reflect the latest available Scopus release. Always verify a journal's current status on its official source before submitting.
Comments load as you scroll here.