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Siqian Zhao

2 accepted papers

2025

Neighborhood-Aware Negative Sampling for Student Knowledge and Behavior Modeling

AAAI 2025technical

Simple random negative sampling is a technique used to enhance decision-making in sequential models with numerous potential negative instances, like recommender systems. However, it ignores the patterns that can be discovered in complex sequences to select the most informative negative samples. In t…

2021

Relaxed Clustered Hawkes Process for Student Procrastination Modeling in MOOCs

AAAI 2021technical

Hawkes processes have been shown to be efficient in modeling bursty sequences in a variety of applications, such as finance and social network activity analysis. Traditionally, these models parameterize each process independently and assume that the history of each point process can be fully observe…

Cited by 13SourcePDFScholar