OPEN
Jeva 4B decision model
Jeva 4B is an open text decision model from NUS with an explicit none-of-the-above outcome. Read its candidate-scoring design and weight package.
By Qi Li and Xinchao Wang (NUS) · Weights upload: 9 Oct 2026
A text decision model with Qwen3.5-4B backbone, adapter and a separate decision head. It supports choices, yes/no and rubric scores, with an explicit none-of-the-above option. The authors design its candidate readout for option reuse and reordered candidate sets.
Quick answers
What is Jeva 4B by Qi Li and Xinchao Wang (NUS)?
Jeva 4B: A text decision model with Qwen3.5-4B backbone, adapter and a separate decision head.
Who makes Jeva 4B?
Jeva 4B: Qi Li and Xinchao Wang (NUS)
Facts
- Base and size
- Qwen3.5-4B
- Inputs
- Text with supplied candidate options or scoring rubric
- Licence
- Apache-2.0 weights and decision head; base licence retained
- Access
- Public backbone, adapter and head.pt; use the Jeva project’s loading guidance
Claims and sources
- The authors describe null-aware, permutation-invariant and cacheable candidate scoring. The checked model card has no numerical benchmark; these are design claims, not a fresh reproduction. vendor reportedsource
Links
Source: Model card and weights →
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