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Efforts span web search, data integration, knowledge graphs, question answering. Recent advancements in Large Language Models (LLMs) have demonstrated remarkable capabilities in comprehending and generating human language, revolutionizing techniques in every front. However, their inherent limitations such as factual inaccuracies and hallucinations make LLMs less suitable for creating knowledgeable and trustworthy assistants. </p> <p class="MsoNormal"> </p> <p class="MsoNormal"> This talk describes our journey in building a knowledgeable AI assistant by harnessing LLM techniques. We start with our findings from a comprehensive set of experiments to assess LLM reliability in answering factual questions and analyze performance variations across different knowledge types. Next, we describe our federated Retrieval-Augmented Generation (RAG) system that integrates external information from both the web and knowledge graphs for trustworthy text generation on real-time topics like stocks and sports, as well as on torso-to-tail entities like local restaurants. Additionally, we brief our explorations on extending our techniques towards multi-modal, contextualized, and personalized Q&A. We will share our techniques, our findings, and the path forward, highlighting how we are leveraging and advancing the decades of work in this area. </p> </div> <div class="row lecture__section"> <h2>About this Lecture</h2> <span> <strong>Number of Slides: </strong> 86</span><br/> <span> <strong>Duration: </strong> 50 minutes </span><br/> <span> <strong>Languages Available: </strong> English</span><br/> <span> <strong>Last Updated: </strong> <span id="lecDate"></span> </span> </div> <div class="row lecture__section"> <h2>Request this Lecture</h2> <p>To request this particular lecture, please complete this <a href="https://services.acm.org/public/speakers/request_lecture.cfm?lecture_id=16305" target="_blank">online form.</a> </p> </div> <div class="row lecture__section"> <h2>Request a Tour</h2> <p>To request a tour with this speaker, please complete this <a href="https://services.acm.org/public/speakers/request_tour.cfm?lecturer_id=20308" target="_blank">online form.</a> </p> <p>All 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