Sentiment-Aware Recommendation Systems in E-Commerce: A Review from a Natural Language Processing Perspective

E-commerce platforms generate vast volumes of user feedback, such as star ratings, written reviews, and comments. However, most recommendation engines rely primarily on numerical scores, often overlooking the nuanced opinions embedded in free text. This paper comprehensively reviews sentiment-aware recommendation systems from a natural language processing perspective, covering advancements from 2023 to early 2025. It highlights the benefits of integrating sentiment analysis into e-commerce recommenders to enhance prediction accuracy and explainability through detailed opinion extraction. Our survey categorizes recent work into four main approaches: deep learning classifiers that combine sentiment embeddings with user item interactions, transformer based methods for nuanced feature extraction, graph neural networks that propagate sentiment signals, and conversational recommenders that adapt in real time to user feedback. We summarize model architectures and demonstrate how sentiment flows through recommendation pipelines, impacting dialogue-based suggestions. Key challenges include handling noisy or sarcastic text, dynamic user preferences, and bias mitigation. Finally, we outline research gaps and provide a roadmap for developing smarter, fairer, and more user-centric recommendation tools.

Modeling, Translation, and Analysis of Different examples using Simulink, Stateflow, SpaceEx, and FlowStar

This report details the translation and testing of multiple benchmarks, including the Six Vehicle Platoon, Two Bouncing Ball, Three Tank System, and Four-Dimensional Linear Switching, which represent continuous and hybrid systems. These benchmarks were gathered from past instances involving diverse verification tools such as SpaceEx, Flow*, HyST, MATLAB-Simulink, Stateflow, etc. They cover a range of systems modeled as hybrid automata, providing a comprehensive set for analysis and evaluation. Initially, we created models for all four systems using various suitable tools. Subsequently, these models were converted to the SpaceEx format and then translated into different formats compatible with various verification tools. Adapting our approach to the dynamic characteristics of each system, we performed reachability analysis using the respective verification tools.