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“EMO” personal emotional assistant using cache based retrieval augmented generation chain

R. Bala, K. Kundu, Pratibha Sharma

CRC Press eBooks, 2025

Abstract

Currently, Retrieval-Augmented Generation (RAG) introduces latency in retrieval and generating response. Cache-Augmented Generation (CAG) generates contextual response quickly by searching in knowledge cache, and solves the latency problem, however, the the size of the cache is limited and not preferred for generic retrieval scenarios. The paper proposes a personal emotional assistant (EMO) using a hybrid approach of RAG and CAG in a generative AI application. The EMO handles user emotions and provides coherent, context-sensitive guidance by leveraging advanced language models and embedding techniques. The EMO includes fine-tuning language models on healthcare-specific data and integrating a dynamic retrieval mechanism to ensure that the responses are accurate, fast but also empathetic and supportive. Comprehensive experiment analysis has been performed to evaluate EMO performance with 95% accuracy in various scenarios, including stress management, mental health support, chronic illness management, and general wellness advice. User feedback was collected through surveys and interaction logs, demonstrating high levels of user engagement and perceived supportiveness.

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