ImpaQ Ecosystem•Clarivate, Scopus & CORE Data
Clarivate WoS 2024 / 2025 Data
IMPAQ
WoS SCIE Q2Scopus Q1SCImago #4,697Hybrid

International Journal of Systems Science

Acronym:tsys
•
Abbreviation (ISO):INT. J. SYST. SCI
•
Identifier (ISSN):0020-7721(Print)/1464-5319(Online)
•
Publisher:Taylor & Francis
Clarivate IF (2026)
4.3↓ -0.3
Journal Impact Factor
IF Trend↓
WoS Quartile
Q2
WoS SCIEJCR Quartile
Clarivate WoS JCR
WoS Categories↓
JCR Release Date: 2026-06-17

Impact Factor Trend (2018–2026)

Clarivate IF trend for International Journal of Systems Science

WoS Q2
13572.1920182.4720192.1520202.2820212.6520224.320234.920244.620254.32026
Annual Impact Factor Metric
Current (2026):4.3
Scopus SJR & RankScopus Q1
1.026
#4,697

SCImago Journal Rank citation prestige weighting

Scopus Year: 2025
H-Index (2025)
93

93 papers with at least that number of citations each

WoS: SCIE / JCRQ2
Self-Citation Rate6.1%
Safe Level (< 15%)Warning Level (> 20%)
Self-citation below 15% indicates strong scholarly independence.
Volume & Open AccessHybrid
257articles/year
1.92% Gold OA•96.74% Original Research

Aims & Scope

International Journal of Systems Science (IJSS) is a world leading journal dedicated to publishing high quality, rigorously reviewed, original papers that contribute to the methodology and practice in emerging systems engineering themes of intelligence, autonomy and complexity. Modern systems are becoming more and more complex and sophisticated in their demand for performance, reliability and increasing autonomy. Historically, highly analytic and numeric-based methods have sufficed, frequently simplifying the problem to allow analytical tractability. Many manufactured and natural systems (biological, ecological and socio-economic) cannot be adequately represented or analyzed without requiring multiple interacting and interconnected frameworks and a common information-processing framework. A wide range of new theories, methodologies and techniques are required to ‘enable’ such systems, and thus engineering and integration to deal with these demands. IJSS therefore encourages original submissions in these areas, with special focus on papers that are strongly novel as well as not being overly applied. Proposals for special issues in cutting-edge areas of systems science are encouraged, and should be discussed with the Editor-in-Chief. Papers that cover those topics related to operations management and logistics will not be accepted for publication in IJSS. Instead they should be submitted directly to sister journal International Journal of Systems Science: Operations & Logistics. Queries regarding submissions can be made by contacting the Editor-in-Chief, whose decision is final.

Topics Covered (Recognized by AI)
Computer science97.4%Mathematics89.6%Economics79.5%Artificial intelligence77%Management66.3%Control (management)62.9%Physics62.3%Engineering61.1%Control theory (sociology)60.5%Quantum mechanics55.5%Biology37.4%Mathematical analysis37%Statistics33.8%Mathematical optimization32.1%Algorithm30.8%Programming language29.5%Nonlinear system29.4%Philosophy28.9%Machine learning28.4%Electrical engineering25.6%Applied mathematics25%Control engineering20.6%

WoS Categories & Quartiles

Detailed JCR / JCI category rankings and quartile breakdown from Clarivate

Clarivate JCR & JCI
JCRSCIE2026

AUTOMATION & CONTROL SYSTEMS

Q2
Rank25/88
IndexSCIE
JCRSCIE2026

COMPUTER SCIENCE, THEORY & METHODS

Q1
Rank34/146
IndexSCIE
JCRSCIE2026

OPERATIONS RESEARCH & MANAGEMENT SCIENCE

Q2
Rank28/109
IndexSCIE
JCISCIE2026

AUTOMATION & CONTROL SYSTEMS

Q2
Rank29/88
IndexSCIE
JCISCIE2026

COMPUTER SCIENCE, THEORY & METHODS

Q2
Rank39/147
IndexSCIE
JCISCIE2026

OPERATIONS RESEARCH & MANAGEMENT SCIENCE

Q1
Rank27/109
IndexSCIE

Annual Historical Statistics & Publications

Track annual publication volume, total citations, and Impact Factor evolution

12 year
2026Latest
IF4.3
Articles / Year328
Total Citations84
2025
IF4.6
Articles / Year407
Total Citations958
2024
IF4.9
Articles / Year310
Total Citations2,736
2023
IF4.3
Articles / Year171
Total Citations2,139
2022
IF2.648
Articles / Year193
Total Citations3,252

SCImago & Scopus Journal Intelligence

Global SCImago ranking, SJR prestige index, Scopus coverage, and societal policy impact

Rank #4,697Scopus Q1SCImago Profile
Scopus Coverage:1970-2026
Scopus Broad Areas:Computer ScienceEngineeringMathematics
Scopus Citation Rank (SJR)Q1
1.026

Weighted prestige citation metric per document indexed in the Scopus database.

Quartile: Scopus Q1
Citations / Doc (2 years)
5.21

Average citations received per document published in the 2-year window.

2-Year Citation Window
Estimated Publication Fee (APC)
$3,450 USD

Estimated Article Processing Charge for Open Access publication.

Estimated cost / article

Scopus 3-Year Publication & Citation Window

3-Year Citations2,987
3-Year Documents643
Citable Documents639

Aggregated from Scopus database across the 3-year SJR evaluation window.

Societal Impact & Inclusivity (SCImago)

Policy Citations (Overton)0

Citations in government and international policy documents

Female Author Rate27.9%

Percentage of female authors published in the journal

Real-world societal policy reach and author gender diversity tracked by SCImago.

Scopus Subject Categories

Computer Science ApplicationsQ1
Control and Systems EngineeringQ1
Theoretical Computer ScienceQ1
Academic Metric Intelligence

Journal Metrics & Citation Visualizations

Total Cites vs Self-Cites

Evaluation of scholarly independence and citation reach

Total citations steady growth
Self-citation: 6.1%

Citations per Document

Citation metric windows across 2, 3, and 4 years

Cites / Doc (4 years)Cites / Doc (3 years)Cites / Doc (2 years)

Chinese Academy of Sciences (CAS) Classification

Major / minor zone classification and CAS Early Warning List history

Major Category (Broad Field):
3区 (Zone 3)Computer Science
Minor Category (Specific Field):
3区AUTOMATION & CONTROL SYSTEMS
CAS Early Warning List History:
Updated annually: 2020 – 2024
2020
Not warned
2021
Not warned
2022
Not warned
2023
Not warned
2024
Not warned

Academic Intelligence Overview & Context

ImpaQ Analysis

International Journal of Systems Science (acronym: tsys, abbr: INT. J. SYST. SCI, ISSN: 0020-7721) is a peer-reviewed international scholarly journal in the field of Engineering & Technology, published by Taylor & Francis in England since 1970. The periodical holds a Journal Impact Factor (JIF) of 4.30, ranking in quartile Q2 of Web of Science (SCIE), a Scopus SJR indicator of 1.026 (Q1), an H-index of 93.

The journal enforces rigorous peer evaluation with a publication frequency of Monthly, an annual output of approximately 257 scientific articles. In terms of accessibility and author fees, it operates under the Hybrid model with an estimated APC of $3,450 USD. It serves as a benchmark publication platform for academics, researchers, and doctoral candidates seeking global research visibility.

Publishing & Editorial Information

Detailed publisher, peer-review turnaround, and publication cycle specifications

Open Access Model
Hybrid
Publisher
Taylor & Francis
Publication Language
English
Frequency
Monthly
Founding Year
1970
Indexing & Databases
SCIEScopusPubMed
Editorial Address
TAYLOR & FRANCIS LTD, 4 PARK SQUARE, MILTON PARK, ABINGDON, ENGLAND, OXON, OX14 4RN

Similar Journals in Discipline

Journals in the same research field with comparable impact metrics

Record UUID: 5f3399de-a360-43e6-80ed-dac408f62f98
Database Updated: 2026-10-01