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Xiaohongshu Tech REDtech

Official account of the Xiaohongshu tech team, sharing tech innovations and problem insights, advancing together.

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Latest from Xiaohongshu Tech REDtech

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Xiaohongshu Tech REDtech
Xiaohongshu Tech REDtech
Mar 21, 2023 · Artificial Intelligence

From Daily to Minute-Level Updates: Real-Time Recommendation System Enhancements at Xiaohongshu

Xiaohongshu transformed its recommendation pipeline from daily to minute‑level updates by redesigning recall, ranking and feature‑joining components, deploying a base‑plus‑incremental training scheme, migrating Spark to Flink, rewriting services in C++, and optimizing RocksDB, which yielded over 10% longer dwell time, 15% more interactions and roughly 50% higher new‑note efficiency.

Model ServingReal-time Traininglarge-scale systems
0 likes · 20 min read
From Daily to Minute-Level Updates: Real-Time Recommendation System Enhancements at Xiaohongshu
Xiaohongshu Tech REDtech
Xiaohongshu Tech REDtech
Mar 16, 2023 · Industry Insights

How Xiaohongshu Secured a Top Spot in Shanghai’s “Panshi” Cybersecurity Drill

On March 10, Shanghai’s telecom and internet regulators held a summary conference for the 2022 “Panshi Action” cyber‑attack‑defense drill, where Xiaohongshu ranked third among 123 defending teams, earning awards for excellence and progress while showcasing its incident‑response and traceability capabilities.

Industry InsightsShanghaiXiaohongshu
0 likes · 4 min read
How Xiaohongshu Secured a Top Spot in Shanghai’s “Panshi” Cybersecurity Drill
Xiaohongshu Tech REDtech
Xiaohongshu Tech REDtech
Feb 16, 2023 · Artificial Intelligence

Intelligent Creative Generation and Optimization for Xiaohongshu Advertising

Xiaohongshu’s end‑to‑end intelligent creative platform extracts high‑quality images, generates diverse titles with RED‑pretrained GPT‑2/T5 models, and selects the best ads using a UCB‑based multi‑armed bandit that balances CTR uplift, revenue and user‑experience, while employing position‑corrected metrics and a scalable dual‑tower DNN to boost long‑tail performance and overall revenue.

AIAdvertisingNLP
0 likes · 18 min read
Intelligent Creative Generation and Optimization for Xiaohongshu Advertising
Xiaohongshu Tech REDtech
Xiaohongshu Tech REDtech
Feb 10, 2023 · Artificial Intelligence

Expert Insights on ChatGPT: Technical Challenges, Applications, and Future Directions

In a REDtech live interview, NLP professor Li Lei and Xiaohongshu engineers examined ChatGPT’s strengths—long, topic‑focused replies and few‑shot learning—and its challenges such as hallucinations, safety, lack of real‑time data, model compression, and multimodal AIGC, outlining how the technology could reshape content creation, customer service, and search while requiring careful risk management.

AIAI safetyChatGPT
0 likes · 20 min read
Expert Insights on ChatGPT: Technical Challenges, Applications, and Future Directions
Xiaohongshu Tech REDtech
Xiaohongshu Tech REDtech
Feb 8, 2023 · Information Security

Exploring and Practicing Community Anti-Cheat Strategies at Xiaohongshu

The presentation outlines Xiaohongshu’s comprehensive community anti‑cheat strategy, defining cheating risks across industries, mapping the black‑gray ecosystem, and detailing a five‑module framework—risk perception, capability building, identification, mitigation, and evaluation—implemented via layered data architecture and multi‑stage detection to protect platform integrity.

Data Analysisanti-cheatfraud detection
0 likes · 17 min read
Exploring and Practicing Community Anti-Cheat Strategies at Xiaohongshu
Xiaohongshu Tech REDtech
Xiaohongshu Tech REDtech
Feb 2, 2023 · Operations

Optimizing Xiaohongshu Splash Screen Ads: Flow Selection and Dynamic Decision Mechanisms

Xiaohongshu’s new “traffic‑optimal + dynamic decision” framework models splash‑screen ad allocation as a linear‑programming problem with volume guarantees, continuously adjusts weights via feedback, and pre‑computes cached decisions to preserve fast app startup, thereby boosting click‑through rates while meeting delivery commitments.

CTR improvementLinear ProgrammingSplash Screen
0 likes · 14 min read
Optimizing Xiaohongshu Splash Screen Ads: Flow Selection and Dynamic Decision Mechanisms
Xiaohongshu Tech REDtech
Xiaohongshu Tech REDtech
Jan 10, 2023 · Artificial Intelligence

AI‑Driven Video Coding: Expert Q&A on Intelligent Compression, Standards, and Future Directions

Experts Wang Shenshe and Chen Jing discuss how deep‑learning‑based video coding is reshaping traditional compression by offering modest quality gains but facing theoretical, hardware, and standardization hurdles, while debating hybrid versus end‑to‑end designs, rate control, 3‑D support, and the balance between human‑centric perception and machine‑oriented efficiency.

AIRate ControlVideo Coding
0 likes · 16 min read
AI‑Driven Video Coding: Expert Q&A on Intelligent Compression, Standards, and Future Directions
Xiaohongshu Tech REDtech
Xiaohongshu Tech REDtech
Jan 3, 2023 · Artificial Intelligence

Insights into ChatGPT: Capabilities, Limitations, and Implications for AI Research

During Xiaohongshu’s REDtech livestream, AI researchers examined ChatGPT’s rapid adoption, versatile task performance, and underlying large‑scale pre‑training with in‑context learning, while highlighting persistent hallucinations, weak reasoning, high costs, and limited search‑engine replacement potential, and emphasized the importance of RLHF‑driven human feedback for future multimodal AI research.

AI researchChatGPTRLHF
0 likes · 14 min read
Insights into ChatGPT: Capabilities, Limitations, and Implications for AI Research
Xiaohongshu Tech REDtech
Xiaohongshu Tech REDtech
Dec 15, 2022 · Artificial Intelligence

Cross‑Scene Intelligent Advertising on Xiaohongshu: Algorithms for Keyword Selection, Targeting, Budget Allocation and Multi‑Constrained Bidding

Xiaohongshu’s All‑Site Smart投 platform unifies cross‑scene advertising by using AI‑driven keyword extraction, graph‑based user modeling, OCR‑enhanced sparse‑ad handling, learning‑to‑rank targeting, dynamic budget reallocation, and a primal‑dual linear‑programming bidding engine that jointly optimizes ROI under multiple constraints.

Advertisingbiddingbudget optimization
0 likes · 12 min read
Cross‑Scene Intelligent Advertising on Xiaohongshu: Algorithms for Keyword Selection, Targeting, Budget Allocation and Multi‑Constrained Bidding