1. Recall the last week's paper, we may applied the Rasch tree method in the Thursone model, although the formula to calculate the "contribution" should be developed under the Thurstone structure.
2. Introducing unfolding theta into the Thurstone framework is straightforward.
3. The pairwise comparison should be considered in the furture.
4. The concept of conservative is broad in this paper based on the item they used. Is it possible to be multidimensional?