1/28/2021 – Version B.21.01
Version B.21.01 consisted of some technical improvements to the assessment including a more direct and stable connection to IBM Watson for scoring. Prior collected data was rescored via this connection and informed a slight update to the scoring algorithm.
- Direct to IBM Watson Scoring
- Scoring algorithm update
5/05/2020 – Version B.20.05
Version B.20.05 this was a minor update in test content. The items selected for the form was adjusted to optimize those that would most accurately reflect ability as scored by the automated scoring solution.
- Updated items in form to optimize scoring using IBM Watson.
5/01/2020 – Version A.20.05
Version A.19.03 was the first version for the German Speaking Assessment. We conducted a calibration pilot to determine the item and ability parameters to create an assessment form and accompanying scoring algorithm to best predict German speaking ability.
- Used Rasch infit/outfit statistics to screen calibration data to the most informative items and response patterns.
- Incorporated regression model to predict ability with a high-degree of reliability