Pairwise set similarity

Which sets are most alike?

Paste or open 2–12 sets. Compare every pair by Jaccard, Dice, overlap coefficient, shared count, or directional containment.

Inspect exact multi-set intersections Calculate a set expression

Calculating…

01 · input

Paste one list per column

Table data

One table, or multiple files as separate sets

Delimiter First row contains headersDetected automatically when possible.

Sets

Choose 2–12 columns

Examples

Matching rulesExact case · Unicode NFC

Ignore uppercase/lowercaseABC and abc become the same item. Collapse repeated spacesUseful for copied prose; off for identifiers. Compatibility UnicodeNFKC may merge visually equivalent values. Sort displayed members A–ZDoes not change the metrics.

Calculating locally Building the pairwise matrix

Normalized memberships and pair metrics are being prepared.

Metric Reference set Sort by reference similarityKeeps the reference first; no clustering.

Rows and columns use the same sets. Containment is directional; other normalized metrics are symmetric.

03 · inspect pair

Set A ↔ Set B

Search this member list

Five metrics, one membership truth.All pairwise values come from the same normalized exact membership records.

Directional containment.Cell row → column reports the share of the row set contained in the column set.

Local-only.Tables, files, searches, projects, shares, and exports stay in this browser.

Which sets are most alike?

Paste one list per column

Choose 2–12 columns

Pairwise similarity matrix

Set A ↔ Set B