David Demitri Africa

Research

Below is all my currently published research work. Each entry includes a link to the paper, a short summary, and some personal thoughts.

Lag and Duration of Leader–Follower Relationships in Mixed Traffic Using Causal Inference

Summary: This paper implements a causal inference approach to analyze leader-follower dynamics in an arterial road in Chennai, India. We quantify the temporal lag and duration of interactions using transfer entropy metrics.

My thoughts: This was my first paper. I learned a lot about how to write research in general from here, and in the future I think I would like to do more papers in this style-- analyzing some weird real world phenomenon with an interesting method. Published in Chaos.

Batayan: A Filipino NLP benchmark for evaluating Large Language Models

Summary: This paper introduces Batayan, a benchmark to evaluate LLMs on NLP tasks in Filipino.

My thoughts: Most of the work here was in actually writing/re-translating the entries. Would be nice to do some in-depth error analysis ala Parser Showdown at the Wall Street Corral. Published in ACL 2025 Main Conference

Identifying a Circuit for Verb Conjugation in GPT-2

Summary: Looking for a circuit in GPT-2 that does subject verb agreement. We find one, but it gets progressively larger as the SVA task gets more complicated.

My thoughts: Final project for L193: Explainable Artificial Intelligence. Thinking of a place to submit this.