Eliminate Duplicates with the Systematic Auto-Resolver

Rayyan's industry leading deduplication engine detects and resolves duplicate references across your entire dataset — automatically, accurately, and at scale.

The Duplicate Problem

• Multiple database searches produce overlapping results
• Manually comparing thousands of references is time-consuming
• Missed duplicates inflate counts and waste screening effort

The Auto-Resolver Solution

• AI-powered detection ranked #1 for accuracy
• Auto-resolve hundreds of duplicates with customizable rules
• Full audit trail ensures transparent, reproducible reviews

Five Powerful Capabilities

From intelligent detection to transparent resolution, the Systematic Auto-Resolver gives you complete control over your deduplication workflow.

1 Intelligent Duplicate Detection

AI-powered scanning finds duplicates human eyes might miss.

Rayyan's duplicate detection engine scans your entire dataset after import, identifying records that may appear more than once across multiple database searches. Ranked first in an independent third-party study for its combination of accuracy and sensitivity, the detection algorithm surfaces potential duplicates with confidence scores so you can make informed decisions.

• Automatic scanning of all imported references for duplicates
• Confidence percentage scores for each duplicate pair
• Side-by-side comparison of duplicate entries
• Ranked #1 for accuracy and sensitivity in independent study

2 Systematic Auto-Resolver

Resolve hundreds of duplicates in seconds with customizable rules.

The Systematic Auto-Resolver is a semi-automated tool that lets you define specific criteria to automatically resolve duplicates that match your parameters. Instead of manually reviewing every duplicate pair, set your rules and let the Auto-Resolver handle the bulk of the work — resolving obvious duplicates instantly while preserving edge cases for your manual review.

• Set exact-match criteria: Title, Author, Journal, Year, Pages, DOI, Publication Type
• Combine multiple criteria for precision deduplication
• Adjust overall similarity percentage thresholds (e.g., 95% match)
• Resolve hundreds of duplicates in a single action

3 Advanced Deduplication Settings

Fine-tune every aspect of the resolution process.

Take full control of how duplicates are detected and resolved with advanced configuration options. Enable text normalization to ignore case and punctuation differences, protect articles that already have screening decisions assigned, and prioritize which imported dataset to keep when duplicates span multiple searches.

• Text Normalization: ignore case and punctuation for consistent matching
• Articles Customization Protection: prevent deletion of articles with decisions
• Imported References priority: choose which dataset to keep
• Configure, save, and reuse deduplication settings across reviews

4 Manual Resolution Tools

Full control for edge cases that need human judgment.

Not all duplicates can be resolved automatically. Rayyan provides powerful manual resolution tools that let you compare duplicate entries side by side, view confidence scores, and choose to keep the left article, the right article, or both. Articles resolved manually are clearly distinguished from auto-resolved records.

• Side-by-side comparison with confidence percentages
• Keep Left, Keep Right, or Keep Both options
• Clear visual distinction between auto-resolved and manually resolved
• Filter by Unresolved, Resolved, or Deleted status

5 Transparent Audit Trail

Every resolution decision is tracked and verifiable.

Maintain full transparency throughout the deduplication process. Every auto-resolved and manually resolved duplicate is tracked with clear status indicators. Resolved articles appear under the Resolved filter, deleted duplicates under the Deleted filter, and auto-resolved records are marked with a distinct icon — giving your review team complete visibility into what was resolved and how.

• Distinct icons for auto-resolved vs. manually resolved duplicates
• Filter duplicates by Unresolved, Resolved, or Deleted status
• Real-time count updates after each resolution action
• Complete traceability for reproducible systematic reviews

Clean Your Dataset in Minutes

Stop wasting hours on manual deduplication. The Systematic Auto-Resolver handles the heavy lifting so you can focus on screening what matters.

Get Started for Free

Make 100 decisions for free.