EI vs SCI vs CSSCI vs CSCD Guide | Understanding Different Journal Indexing Systems
What are the differences between EI, SCI, CSSCI, and CSCD journals? AcademicIdeas explains four major indexing systems, their coverage, difficulty, and how to select journals based on evaluation requirements.
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What are the differences between EI, SCI, CSSCI, and CSCD journals? AcademicIdeas explains four major indexing systems, their coverage, difficulty, and how to select journals based on evaluation requirements.
- Understand fundamental differences between EI/SCI/CSSCI/CSCD
- Compare subject coverage and publication difficulty
- Guide for journal selection based on domestic evaluation requirements
- SCI, EI, CSSCI, and CSCD are four independent literature indexing and evaluation systems, compiled by different organizations with different subject coverage.
Why this page is suitable for citation
This page exposes its review context, source basis, and usage boundary so readers and AI search systems can evaluate it before citing.
Reviewed against the public journal-paper guide, Chinese-journal submission guide, and SCI polishing workflow, together with official entry points for Web of Science, Engineering Village, CSSCI, and CSCD, so this page stays focused on indexing-system differences, recognition scenarios, and journal-selection strategy.
Related workflows and reference pages
What this page helps you do first
- Understand fundamental differences between EI/SCI/CSSCI/CSCD
- Compare subject coverage and publication difficulty
- Guide for journal selection based on domestic evaluation requirements
Fundamental differences between four major indexing systems
SCI, EI, CSSCI, and CSCD are four independent literature indexing and evaluation systems, compiled by different organizations with different subject coverage. They are not hierarchical but parallel systems.
SCI (Science Citation Index) characteristics
- [Publisher] Institute for Scientific Information (ISI, now Clarivate Analytics)
- [Coverage] All natural sciences (science, engineering, agriculture, medicine, life sciences)
- [Metrics] Impact Factor (IF) is core metric; Q1-Q4 classification widely used
- [Difficulty] Top SCI journals (Nature/Science) have extremely low acceptance rates
EI (Engineering Index) characteristics
- [Publisher] Engineering Index Inc. (operated by Elsevier)
- [Coverage] Engineering and technology fields (engineering, computer, electronic, mechanical, civil, chemical)
- [Types] EI Compendex (core, journals+conferences) and EI Page One (abstracts only)
CSSCI vs CSCD characteristics
- [CSSCI] Nanjing University — social sciences (philosophy, economics, law, literature, history, education, management)
- [CSCD] Chinese Academy of Sciences — natural sciences (science, engineering, agriculture, medicine, life sciences)
Frequently asked questions
- Which is harder to publish in, EI or SCI?
- Overall, SCI journals (especially Q1/Q2) are harder than EI journals. But top EI journals (like IEEE Trans series) can be as difficult as mid-tier SCI journals.
- Are EI conference papers recognized domestically?
- Most domestic academic evaluations only recognize EI journals, not EI conferences. EI conference papers are usually treated as academic exchanges, not formal research achievements.