Nish Tahir is a principal AI research engineer at TELUS Digital who writes about agent systems and software development. His decision-model tutorial shows how a language model can choose among fixed answers in one prediction step.[5][3]
Start with Build your own decision model →
Career
Tahir’s workshop biography describes earlier work across mobile, web, backend systems, operations, connected devices and developer tooling. At TELUS Digital he works on agent architecture, framework evaluation and production AI. His older public X and GitHub descriptions name WillowTree; those accounts still establish the connection to his personal publication, while the current workshop biography supplies the newer professional title.[5][1][2]
Contributions
Make a fixed choice without generating a sentence
The decision-model tutorial starts with a pretrained language model and a question whose possible answers are labeled A through E. It reads the scores for those answer tokens, excludes other vocabulary and normalizes the remaining scores into probabilities. The result is a classification decision from one prediction step. Tahir then explores fine-tuning and calibration, comparing confidence with observed correctness. Restricting the output alone does not guarantee either accurate answers or well-calibrated probabilities.[3]
Keep the experiment reproducible
The companion repository collects the code behind the decision-model walkthrough. A reader can inspect the model, data and evaluation path rather than treating the visible probabilities as a black-box service. The tutorial’s tests use a particular small model and sampled question set, so the results support that experiment rather than proving a general speed or accuracy advantage for every task.[4]
Tools, writing & talks
Writing, research & talks
Start here
Build your own decision modelnishtahir.comA worked fixed-choice inference, training and calibration tutorial.
Start with the sky-color example, then follow the training and calibration sections. Python, PyTorch and language-model basics are prerequisites; compare predicted probabilities with observed correctness rather than assuming a single-pass classifier is calibrated.
Author[3]Original source
Tools
- Build your own Jev companion code
github.comThe source code accompanying Tahir’s decision-model experiment.
Repository owner[4]