Features
Literature Pipeline
Keywords
- Three-level hierarchy (L1 main term, L2 sub-term, L3 specific)
- LLM-powered term expansion and related concept discovery
- Auto-generated search formulas for Web of Science, Scopus, PubMed
Multi-Source Search
- Federated search across Semantic Scholar, OpenAlex, arXiv, Crossref
- Standardized metadata with DOI matching
- Batch import with conflict detection
Deduplication
- Three-stage: DOI exact → title fingerprint → LLM verification
- Side-by-side comparison with keep/skip/replace actions
- Batch auto-resolve with LLM
Crawler
- Multi-channel: Unpaywall → arXiv → direct URL
- Status tracking per paper
- Bulk download with priority modes
OCR
- MinerU for born-digital PDFs (auto-managed subprocess)
- PaddleOCR for scanned documents
- pdfplumber for native text extraction
- GPU acceleration with TTL-based model management
Subscriptions
- RSS feeds and API-based scheduled updates
- Configurable frequency (daily/weekly/monthly)
- Quick update check without creating subscription
AI & Knowledge
RAG Knowledge Base
- LlamaIndex + ChromaDB vector store
- BAAI/bge-m3 GPU-aware embeddings
- Hybrid retrieval with bge-reranker-v2-m3 reranking
- Cited answers with source attribution
Chat Playground
- ChatGPT-style streaming interface
- Tool modes: Q&A, Citation Lookup, Review Outline, Gap Analysis
- Multi-KB parallel retrieval
- Conversation history and management
LangGraph Pipeline
- StateGraph-based search and upload workflows
- Conditional edges for branching logic
- HITL interrupt/resume for deduplication conflicts
- MemorySaver checkpointing (SqliteSaver planned)
Writing Assistant
- Summarization, citation formatting, review outlines
- Gap analysis with novelty/feasibility scoring
- Multi-format citation export (GB/T 7714, APA, MLA, Chicago, IEEE)
Research Tools
Analytics Dashboard
- Reading progress breakdown
- Weekly read bar chart
- Top journals list
- Reading activity heatmap (GitHub-style)
Trend Analysis
- Year-binned publication volume
- Citations over time
- Emerging/declining topic detection
Author Network
- d3-force directed graph of co-authorship
- Centrality metrics and filtering
- SVG/PNG export
Gap Analysis
- LLM-powered research opportunity identification
- Novelty and feasibility scoring
- Candidate research questions
Paper Comparison
- Side-by-side abstract, metadata, and citation comparison
- Visual diff highlighting
- Works with 2-5 papers
Citation Tools
- APA, MLA, Chicago, IEEE, GB/T 7714 styles
- Bibliography builder with paper selection
- Citation style picker with live preview
Version Tracking
- Semantic Scholar polling for updates
- Version history with diff generation
- Upgrade preservation
Collaboration
- Team Members: Invite with email, role assignment (read/write/admin), RBAC middleware
- API Keys: SHA-256 hashed, scope-based access,
omk_prefix - Collections: Custom paper groups with color coding and AI-suggested tags
- MCP Server: Model Context Protocol for AI IDE integration
User Experience
- i18n: Complete Chinese/English bilingual support
- Reading Goals: Daily/weekly targets with streak tracking
- Reading History: Session tracking with time stats
- Notes Dashboard: Project-wide notes with Markdown/LaTeX rendering
- PWA: Installable with service worker offline caching
- Responsive: Mobile-optimized with horizontal scroll navigation