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Youku Technology

Jul 30, 2020 · Artificial Intelligence

Key Technologies for Entertainment Content Flow Management: Multi-Task Guarantee Optimization Algorithm Practice

The presentation explains how a multi‑task guarantee optimization algorithm—illustrated with Youku’s new hot series—builds an exposure‑sensitivity model to allocate limited video‑placement resources across homepage and channel slots, overcoming manual rule limitations and simultaneously maximizing play counts while satisfying diverse scenario and content objectives.

Content OptimizationKDD2020Multi-Task Learning

0 likes · 2 min read

Key Technologies for Entertainment Content Flow Management: Multi-Task Guarantee Optimization Algorithm Practice

Youku Technology

Jul 29, 2020 · Artificial Intelligence

Core Technology of Video Content Understanding: Technical Practice of Partial Re-ID in Video Inspection

The talk explains how Alibaba’s Entertainment Content Operation Platform applies a Partial‑ReID algorithm to overcome the challenges of person re‑identification in heavily edited video content, enabling accurate cross‑shot character matching, richer appearance data, and metrics such as presence, interaction, and storyline for improved video quality assessment.

AIPartial Re-IDcomputer vision

0 likes · 2 min read

Core Technology of Video Content Understanding: Technical Practice of Partial Re-ID in Video Inspection

Youku Technology

Jul 24, 2020 · Backend Development

Hot Link Coverage and Comparative Testing for Backend Services

The article describes Alibaba’s flow‑based comparative testing and introduces Youku’s hot‑link coverage technique, which instruments method chains to automatically identify high‑frequency request paths, recommend them for regression testing, achieve full business‑link coverage without manual effort, and outlines future machine‑learning enhancements.

Testingcoveragehot-link

0 likes · 11 min read

Hot Link Coverage and Comparative Testing for Backend Services

Youku Technology

Jul 17, 2020 · Backend Development

Defensive Programming, Exception Handling, and DRY Principle in Java

The article explains how defensive programming in Java—using guard clauses, validators, and side‑effect‑free assertions—prevents errors, outlines proper exception handling by distinguishing checked from unchecked exceptions, and reinforces the DRY principle, urging developers to abstract repeated logic after three occurrences.

DRY principleException HandlingJava

0 likes · 18 min read

Defensive Programming, Exception Handling, and DRY Principle in Java

Youku Technology

Jul 16, 2020 · Operations

How Alibaba Entertainment Automates Capacity Management and Elastic Scaling

Alibaba Entertainment transformed its capacity management from manual, experience‑based decisions to a fully automated system that continuously evaluates single‑machine performance, identifies performance and success‑rate breakpoints, and drives elastic scaling, dramatically improving resource utilization, availability, and development efficiency across all its applications.

Performance Testingautomationcapacity management

0 likes · 10 min read

How Alibaba Entertainment Automates Capacity Management and Elastic Scaling

Youku Technology

Jul 15, 2020 · Backend Development

Designing for Failure: How Streaming Control Systems Stay Resilient

This article explains the concept of failure‑oriented design, why it matters for large‑scale streaming services, and details concrete architectural patterns—such as layered services, database fallback, cache redundancy, consistency checks, and dynamic traffic switching—used by a production playback control platform.

backend architecturecache redundancydatabase fallback

0 likes · 9 min read

Designing for Failure: How Streaming Control Systems Stay Resilient

Youku Technology

Jul 10, 2020 · Artificial Intelligence

Mastering Video Object Segmentation: Cutting-Edge Models and Design Tricks

This technical talk introduces video object segmentation tasks, reviews leading datasets and state-of-the-art deep learning models, and shares practical network design rules and performance‑boosting techniques, presented by Prof. Wang Xinggang as part of Alibaba's MEDIA AI challenge series.

AIcomputer visiondeep learning

0 likes · 4 min read

Mastering Video Object Segmentation: Cutting-Edge Models and Design Tricks

Youku Technology

Jul 9, 2020 · Artificial Intelligence

Multi-level Multi-modal Search Engine and Graph Engine for Billion-scale Video Content

An advanced multi‑level, multi‑modal search and graph engine for Youku processes text, voice, image and video queries across hierarchical video elements, using combined vector and inverted indexes to merge cross‑level and cross‑modal results, while a distributed knowledge‑graph layer enables multimodal graph traversal for billion‑scale video retrieval.

AIgraph enginelarge-scale indexing

0 likes · 12 min read

Multi-level Multi-modal Search Engine and Graph Engine for Billion-scale Video Content

Youku Technology

Jul 6, 2020 · Backend Development

Design Principles and Standards for Error Codes in Service Development

The article outlines Alibaba‑inspired design principles and concrete specifications for service error codes—defining a 13‑character, domain‑structured format for log‑oriented codes and a concise 5‑character scheme for external APIs—emphasizing quick source tracing, memorability, standard communication, and practical guidelines such as avoiding enums.

APIerror codestandards

0 likes · 12 min read

Design Principles and Standards for Error Codes in Service Development

Youku Technology

Jun 29, 2020 · Backend Development

Youku Intelligent Bitrate (Smart Profile): Design, Implementation, and Optimization

Youku’s Intelligent Profile introduces a smart‑bitrate system that dynamically selects the optimal video quality using speed‑based, buffer‑based, hybrid and reinforcement‑learning strategies, replaces traditional ABR’s limited predictions, gathers client metrics for continuous offline analysis, and has already raised high‑definition playback above 90% while halving stall rates across mobile OTT and live streaming.

QoEadaptive bitratemachine learning

0 likes · 22 min read