Understanding confidence scores
What the High, Medium, and Low bands mean and how the score is calculated.
Every duplicate pair gets a confidence score from 0 to 100. The score tells you how sure DeDupe is that two records are the same.
Confidence bands
Scores map to three colored bands shown throughout the queue:
| Band | Color | What it means |
|---|---|---|
| High | Green | Very likely the same record — usually safe to merge. |
| Medium | Amber | Probably the same — worth a quick look. |
| Low | Orange | Possible match — review carefully before merging. |
The Data Quality page also breaks pairs into finer buckets: Low (under 50%), Medium (50–69%), High (70–89%), and Very high (90–100%).
How the score is calculated
The score blends four weighted factors:
- Match score — how strongly the matching strategy fired.
- Method reliability — how trustworthy that strategy is in general.
- Attribute overlap — how much other data the two records share.
- Data quality — how complete and clean the underlying records are.
Admins can adjust how much each factor counts toward the final score under Settings → Matching rules → Scoring — see Matching rules. The four weights always add up to 100%.
Using confidence to work efficiently
- Filter the queue by minimum confidence to focus on the safest merges first.
- Give a rule an auto-merge action — at any confidence, or above a score you trust — so its pairs merge without manual review.
- Drop to the lower bands only when you have time to inspect each pair closely.