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Zhihu Tech Column

Jan 17, 2025 · Artificial Intelligence

Zhihu Direct Answer: Product Overview and Technical Practices

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.

AI SearchChunkingEngineering Optimization

0 likes · 13 min read

Zhihu Direct Answer: Product Overview and Technical Practices

JD Tech Talk

Nov 26, 2024 · Artificial Intelligence

Design and Implementation of an Automated Logistics QA Bot Using Retrieval, Rerank, and Data Augmentation Techniques

This article describes a low‑cost, privacy‑preserving chatbot for logistics that combines data cleaning, large‑model‑based data augmentation, BM25 and vector retrieval, a DNN rerank model, and LLM‑driven answer rewriting to deliver accurate, compliant automated responses.

AIBM25QA bot

0 likes · 11 min read

Design and Implementation of an Automated Logistics QA Bot Using Retrieval, Rerank, and Data Augmentation Techniques

DataFunSummit

Apr 28, 2022 · Artificial Intelligence

ReRank: The Backstage of Recommendation Systems and Its Evolution Toward Ecosystem Reshaping

This article explores the role of ReRank in recommendation and advertising pipelines, detailing its algorithmic position, the challenges of diversity versus relevance, evaluation metrics such as DCG/NDCG, the evolution from heuristic methods to deep learning models, and practical insights from industry cases like Airbnb and Alibaba.

ReRankRecommendation systemsadvertising

0 likes · 57 min read

ReRank: The Backstage of Recommendation Systems and Its Evolution Toward Ecosystem Reshaping