This guide outlines a comprehensive RAG evaluation framework covering failure modes, multi‑layer metrics, test‑set construction, open‑source tools, CI/CD quality gates, production monitoring, and special considerations for agentic RAG to ensure reliable, trustworthy retrieval‑augmented generation systems.
This article presents the Trustworthy Generation design pattern for Retrieval‑Augmented Generation (RAG) systems, analyzes four root causes of low trustworthiness—retrieval errors, content reliability, pre‑retrieval reasoning mistakes, and model hallucinations—and proposes layered solutions, citation techniques, CRAG and Self‑RAG architectures, guardrails, and practical trade‑offs.
This guide explains why RAG systems often produce off‑topic answers, outlines how to measure hit‑rate, retrieval, reranking and generation metrics, provides step‑by‑step evaluation pipelines, code examples, real‑world case studies, and interview‑ready templates for diagnosing and optimizing each stage of the pipeline.
This article presents a comprehensive overview of Zhihu Direct Answer, describing its AI‑driven search architecture, RAG framework, query understanding, retrieval, chunking, reranking, generation, evaluation mechanisms, engineering optimizations, and the professional edition, while sharing concrete performance‑boosting practices and future development plans.
This article summarizes the key technical insights from Zhihu Direct Answer, an AI-powered search product, covering its product overview, RAG framework, query understanding, retrieval strategies, chunking, reranking, generation techniques, evaluation methods, and engineering optimizations for cost and performance.
The article explains how greedy search, beam search, Top‑K, Top‑p (nucleus) sampling, and temperature each shape large language model generation, comparing their effects on repetition, diversity, and creativity, and provides concise TensorFlow‑based code examples illustrating these inference‑time strategies.
This article surveys recent advances in video reconstruction sparked by OpenAI's Sora, examines the technical challenges of unified latent representations, long‑sequence consistency, and variable resolution, and reviews a range of transformer‑based, diffusion, and masked‑generation models together with their code implementations and future research roadmaps.
This article explains how to use PHP's built-in XML extension to parse XML files into a DOM tree and to generate XML documents programmatically, providing step‑by‑step code examples for loading, traversing, creating elements, setting attributes, and saving the resulting XML files.
This article explains the implementation of open-domain chatbots for customer service, comparing retrieval‑based and generative seq2seq approaches, describing hybrid methods that first attempt constrained retrieval before falling back to generation, and discusses training data, keyword extraction, and performance observations.
