Zhihu Recommendation Page Ranking: Architecture, Feature Engineering, Model Evolution, and Future Directions

This article presents a comprehensive overview of Zhihu's recommendation page ranking system, covering its request flow, historical ranking evolution, feature design, deep learning models, multi‑task CTR optimization, practical engineering insights, current challenges, and future research directions such as reinforcement learning.

CTRmulti-task learningranking

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Zhihu Recommendation Page Ranking: Architecture, Feature Engineering, Model Evolution, and Future Directions

Alibaba Cloud Developer

Aug 17, 2018 · Artificial Intelligence

Can Multi‑Task Learning Shorten E‑Commerce Titles Without Losing Sales?

This paper proposes a multi‑task learning approach that compresses overly long e‑commerce product titles into concise short titles using a Pointer Network, while simultaneously generating user search queries with an attention‑based encoder‑decoder, achieving higher readability, informativeness, and conversion rates than traditional methods.

Sequence-to-Sequenceattention mechanisme-commerce SEO

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Can Multi‑Task Learning Shorten E‑Commerce Titles Without Losing Sales?

Alibaba Cloud Developer

Aug 10, 2018 · Artificial Intelligence

How Multi-Level Similarity‑Aware CNN Boosts Person Re‑Identification Accuracy

This article reviews a 2017 ACM MM paper that introduces a multi‑level similarity‑aware CNN (MSP‑CNN) for person re‑identification, detailing its siamese architecture, dual similarity constraints, multi‑task training, experimental results on CUHK03, Market‑1501 and CUHK01, and its advantages for large‑scale deployment.

CNNdeep learningmulti-task learning

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How Multi-Level Similarity‑Aware CNN Boosts Person Re‑Identification Accuracy

Alibaba Cloud Developer

Aug 7, 2018 · Artificial Intelligence

How Multi‑Task Learning Can Shrink E‑Commerce Product Titles Without Losing Sales

Researchers propose a multi‑task learning approach that compresses overly long e‑commerce product titles into concise short titles by jointly training a Pointer Network for extraction and an encoder‑decoder for query generation, preserving key information and maintaining conversion rates, as validated by offline and online experiments.

e-commercemulti-task learningnatural language processing

0 likes · 11 min read

How Multi‑Task Learning Can Shrink E‑Commerce Product Titles Without Losing Sales

Alibaba Cloud Developer

Jul 31, 2018 · Artificial Intelligence

How Multi-Level Similarity‑Aware CNN Boosts Person Re‑Identification

This paper introduces a novel multi‑level similarity‑aware CNN (MSP‑CNN) for person re‑identification, applying distinct similarity constraints to low‑ and high‑level feature maps, integrating classification and similarity losses in a multitask framework, and demonstrating superior performance on CUHK03, CUHK01 and Market‑1501 benchmarks.

CNNdeep learningmulti-task learning

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How Multi-Level Similarity‑Aware CNN Boosts Person Re‑Identification

Alibaba Cloud Developer

Jun 14, 2018 · Artificial Intelligence

Self-Attention Boosts Heterogeneous User Behavior Modeling for Recommendations

This paper proposes a novel attention‑based framework that groups and encodes heterogeneous user behavior sequences into separate semantic subspaces, applies self‑attention to capture inter‑behavior influences, and demonstrates faster training and comparable or improved recommendation performance across multiple tasks and datasets.

Self-Attentionheterogeneous behaviormulti-task learning

0 likes · 12 min read

Self-Attention Boosts Heterogeneous User Behavior Modeling for Recommendations

Meituan Technology Team

Mar 29, 2018 · Artificial Intelligence

Deep Learning Model Applications and Optimizations for Recommendation Ranking at Meituan

The paper describes how Meituan tackles information overload on its lifestyle platform by training multi‑task deep neural networks on billions of interaction logs using a distributed PS‑Lite framework, employing sophisticated feature engineering, missing‑value imputation, KL‑regularization and Neural Factorization Machines to boost offline AUC and online CTR in the “Guess You Like” recommendation feed, while introducing training‑time optimizations and outlining future multi‑task and contextual enhancements.

Recommendation Systemsdeep learningfeature engineering

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Deep Learning Model Applications and Optimizations for Recommendation Ranking at Meituan