Yan Zhou

A Collaborative Filtering Algorithm based on Improved Similarity

2017

The collaborative filtering recommendation implements recommendation by using his neighbor user's preference. And the similarity calculation is the key. The traditional similarity calculation neglects the impact of co-rating item number and user average rating on …

A Span-based Joint Model for Opinion Target Extraction and Target Sentiment Classification

2019

Target-Based Sentiment Analysis aims at extracting opinion targets and classifying the sentiment polarities expressed on each target. Recently, token based sequence tagging methods have been successfully applied to jointly solve the two tasks, which aims …

Theoretical Analysis of Meta Reinforcement Learning: Generalization Bounds and Convergence Guarantees

2024 · arXiv (Cornell University)

This research delves deeply into Meta Reinforcement Learning (Meta RL) through a exploration focusing on defining generalization limits and ensuring convergence. By employing a approach this article introduces an innovative theoretical framework to meticulously assess …