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Grey Systems

Emerald Group Publishing Ltd. · United Kingdom · Est. 2011

ISSN2043-9385

SJR Q2✓ WOS SCIE✓ Scopus / SJR

/ 100

High Trust

PubScope credibility score from verifiable indexing & ethics signals

Score Breakdown

◆ WoS flagship (SCIE/SSCI/AHCI)78

✓ Corroboration (1 more)+6

Total84

Third-party records · how this is calculated · Report an error →

⚡ Speed vs Prestige

How does this journal balance review speed with impact level?

Publication speed: not measurable

publisher doesn’t disclose per-article submission dates — we never estimate

SJR Rank

Top 50% in field

Impact Factor & Quartile · Web of Science (JCR)

✓ Indexed in the Web of Science Core Collection (SCIE) — Clarivate publishes an official Journal Impact Factor and JCR quartile for this journal.

Find the journal’s official page ↗Open the official JCR record on Clarivate ↗

The Impact Factor & JCR quartile are licensed by Clarivate — we link you to the official source instead of reprinting a number that can go out of date. Open metrics below: SCImago Q2. Source: Clarivate Journal Citation Reports.

SJR Scorei

0.556

H-Indexi

SNIPi

1.03

Total Worksi

581

Total Citationsi

7,758

2yr Mean Citednessi

2.84

Open Impact Factor alternative

Aims & Scope

Subject areas: Mathematics, Interdisciplinary Applications; Applied Mathematics; Computer Science (miscellaneous); Control and Systems Engineering.

General Information

Country / RegionUnited Kingdom

Primary LanguageEnglish

1st Year Published2011

Annual Volume~ 41 articles / year

StatusActive (last: 2026)

Total Publications581

Publisher OrgEmerald Publishing Limited

Submission Info

Peer Review—

Review Time—

Acceptance Rate—

OA License—

OA Rate—

Ethics & Quality

COPE Member✗ No

OASPA Member✗ No

Not on Predatory Lists✓ Yes

Think.Check.Submit Compliance

thinkchecksubmit.org

5/12 · 42%

✅

Do you know the journal / publisher?

Emerald Group Publishing Ltd.

❌

Does the journal have a website?

No URL

✅

Is the ISSN verified?

2043-9385

✅

Indexed in a trusted database?

WoS, Scopus

❌

Peer review process documented?

N/A

❌

Follows ethical publishing standards (COPE)?

N/A

❌

APC fees clearly disclosed?

N/A

✅

Not on predatory/blacklists?

✓ Clean

❌

Long-term digital preservation?

N/A

❌

Plagiarism detection in place?

N/A

❌

Listed in DOAJ (verified OA)?

N/A

✅

Primary language documented?

English

Based on the Think.Check.Submit framework by DOAJ, COPE & OASPA. All data from verified open sources.

Publication & Citation Trend

Articles published

Citations received

559

2019

1.1k

2020

377

2021

399

2022

469

2023

184

2024

117

2025

2026

Source: OpenAlex · Each year’s green bar = citations earned by that year’s papers, counted to date — so recent years look lower simply because their papers haven’t had time to be cited yet.

SJR Quartile by Discipline

Scimago ranks this journal separately in each subject category — its quartile can differ by discipline.

Applied MathematicsQ2

Computer Science (miscellaneous)Q2

Control and Systems EngineeringQ2

Subject Classification

Web of Science Categories

Mathematics, Interdisciplinary Applications

Scopus Categories

Computer Science (miscellaneous)Applied MathematicsControl and Systems Engineering

Research Topics (OpenAlex)

Grey System Theory ApplicationsMulti-Criteria Decision MakingEnergy Load and Power ForecastingForecasting Techniques and ApplicationsOptimization and Mathematical ProgrammingRough Sets and Fuzzy LogicEnergy, Environment, Economic GrowthDiverse Interdisciplinary Research InnovationsResearch studies in VietnamSustainable Supply Chain Management

Frequently asked questions about Grey Systems

Is Grey Systems a predatory journal?

PubScope has no integrity flags on record for Grey Systems: it is indexed in Web of Science, Scopus, and is not on DOAJ's withdrawn list. Its PubScope Trust Score is 84/100. Indexing is a transparency signal, not a guarantee — always confirm fit and policies before submitting.

What is the impact factor of Grey Systems?

Grey Systems is indexed in the Web of Science Core Collection, so Clarivate publishes an official Journal Impact Factor for it (since the 2023 Journal Citation Reports, every Core Collection journal — including Arts & Humanities and Emerging Sources titles — receives one). PubScope links to Clarivate's official source rather than reprinting the number, which can be out of date. Its open 2-year mean citedness is 2.84.

Is Grey Systems indexed in Scopus and Web of Science?

Grey Systems is indexed in Web of Science, Scopus.

What is the aims and scope of Grey Systems?