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Lele Sha

3 accepted papers

2024

Detecting AI-Generated Sentences in Human-AI Collaborative Hybrid Texts: Challenges, Strategies, and Insights

IJCAI 2024poster

This study explores the challenge of sentence-level AI-generated text detection within human-AI collaborative hybrid texts (abbreviated as hybrid texts). Existing studies of AI-generated text detection for hybrid texts often rely on synthetic datasets. These typically involve hybrid texts with a lim…

2024

Towards Automatic Boundary Detection for Human-AI Collaborative Hybrid Essay in Education

AAAI 2024technical

The recent large language models (LLMs), e.g., ChatGPT, have been able to generate human-like and fluent responses when provided with specific instructions. While admitting the convenience brought by technological advancement, educators also have concerns that students might leverage LLMs to complet…

2022

Bigger Data or Fairer Data? Augmenting BERT via Active Sampling for Educational Text Classification

COLING 2022main

Pretrained Language Models (PLMs), though popular, have been diagnosed to encode bias against protected groups in the representations they learn, which may harm the prediction fairness of downstream models. Given that such bias is believed to be related to the amount of demographic information carri…