yeatmanlab / jsCAT / 16276095479 / 2

100%

main: 100%

push

github

[ENH]: Allow users to update the ability prior (#35)

* ENH: Add the ability to adjust the ability estimate prior

* Add tests for normal and custom prior

* Update jest config to exclude coverage for type declarations

* Fix test of strong prior in cat.test.ts

* Add prior validation

* Validate prior and add tests

* Prior change (#38)

* Add simple test for EAP. It fails

* fix: correct EAP ability estimation by exponentiating log-likelihood

The EAP ability estimation was incorrectly using log-likelihood values
directly in probability calculations. This fix:

1. Converts log-likelihood back to probability space using Math.exp()
   before using it in the EAP calculation
2. Updates test expectations to match the corrected behavior
3. Simplifies the EAP test to only check that theta decreases
   after an incorrect response to an easy item

The EAP method now properly reduces ability estimates when examinees
fail easy items, which is critical for accurate adaptive testing.

* update test and validation code

* add uniform prior

* update lint fix

* update

* update

* Update src/utils.ts

Co-authored-by: Adam Richie-Halford <richford@users.noreply.github.com>

* Update src/cat.ts

Co-authored-by: Adam Richie-Halford <richford@users.noreply.github.com>

* Update src/utils.ts

Co-authored-by: Adam Richie-Halford <richford@users.noreply.github.com>

* Update src/cat.ts

Co-authored-by: Adam Richie-Halford <richford@users.noreply.github.com>

* Update src/cat.ts

Co-authored-by: Adam Richie-Halford <richford@users.noreply.github.com>

* Update src/cat.ts

Co-authored-by: Adam Richie-Halford <richford@users.noreply.github.com>

* Update src/cat.ts

Co-authored-by: Adam Richie-Halford <richford@users.noreply.github.com>

* Update src/__tests__/cat.test.ts

Co-authored-by: Adam Richie-Halford <richford@users.noreply.github.com>

* Update src/__tests__/cat.test.ts

Co-authored-by: Adam Richie-Halford <richford@users.noreply.github.com>

* Update src/cat.ts

... (continued)

318 of 318 branches covered (100.0%)

Branch coverage included in aggregate %.

1504 of 1504 relevant lines covered (100.0%)

9999.11 hits per line