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OneRec论文解读

摘要:最近,基于生成检索的推荐系统(GR)已经成为一种有前景的范式,它以自回归的方式直接生成可解码视频。然而,大多数现代推荐系统采用检索和排名策略,其中生成模型在检索阶段仅作为选择器。在本文中,我们提出了OneRec,它用统一的生成模型取代了级联学习框架。据我们所知,这是第一个在现实世界场景中显著超越当前复杂和设计良好的推荐系统的端到端生成模型。具体来说,OneRec包括:1)编码器-解码器结构,对用户的历史行为序列进行编码,并逐步解码用户可能感兴趣的视频。我们采用稀疏专家混合(MoE)来扩展模型容量,而不会按比例增加计算FLOP。2)分段生成方法。与传统的下一个项目预测相比,我们提出了一种基于会话的生成方法,它比依赖于手工制作的规则来正确组合生成结果的逐点生成更优雅,上下文更连贯。3)迭代偏好对齐模块与直接偏好优化(DPO)相结合,以提高生成结果的质量。与NLP中的DPO不同,推荐系统通常只有一次机会显示每个用户的浏览请求的结果,因此无法同时获得阳性和阴性样本。为了解决这一局限性,我们设计了一个奖励模型来模拟用户生成,并根据推荐系统在线学习的属性定制采样策略。大量实验表明,有限数量的DPO样本可以对齐用户兴趣偏好,并显著提高生成结果的质量。我们在快手的主场景部署了OneRec,快手是一个拥有数亿日活跃用户的短视频推荐平台,观看时间增加了1.6%,这是一个实质性的改善。

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AutoML相关论文

本文为Awesome-AutoML-Papers的译文。 1、AutoML简介 Machine Learning几年来取得的不少可观的成绩,越来越多的学科都依赖于它。然而,这些成果都很大程度上取决于人类机器学习专家来完成如下工作: 数据预处理 Preprocess the data 选择合适的特征 Select appropriate features 选择合适的模型族 Select an appropriate model family 优化模型参数 Optimize model hyperparameters 模型后处理 Postprocess machine learning models 分析结果 Critically analyze the results obtained 随着大多数任务的复杂度都远超非机器学习专家的能力范畴,机器学习应用的不断增长使得人们对现成的机器学习方法有了极大的需求。因为这些现成的机器学习方法使用简单,并且不需要专业知识。我们将由此产生的研究领域称为机器学习的逐步自动化。 AutoML借鉴了机器学习的很多知识,主要包括: 贝叶斯优化 Bayesian optimization 结构化数据的大数据的回归模型 Regression models for structured data and big data 元学习 Meta learning 迁移学习 Transfer learning 组合优化 Combinatorial optimization. 2、目录 Papers Automated Feature Engineering Expand Reduce Hierarchical Organization of Transformations Meta Learning Reinforcement Learning Architecture Search Evolutionary Algorithms Local Search Meta Learning Reinforcement Learning Transfer Learning Hyperparameter Optimization Bayesian Optimization Evolutionary Algorithms Lipschitz Functions Local Search Meta Learning Particle Swarm Optimization Random Search Transfer Learning Performance Prediction Performance Prediction Frameworks Miscellaneous Tutorials Bayesian Optimization Meta Learning Articles Bayesian Optimization Meta Learning Slides Bayesian Optimization Books Meta Learning Projects Prominent Researchers Papers Automated Feature Engineering Expand Reduce 2017 | AutoLearn — Automated Feature Generation and Selection | Ambika Kaul, et al. | ICDM | PDF 2017 | One button machine for automating feature engineering in relational databases | Hoang Thanh Lam, et al. | arXiv | PDF 2016 | Automating Feature Engineering | Udayan Khurana, et al. | NIPS | PDF 2016 | ExploreKit: Automatic Feature Generation and Selection | Gilad Katz, et al. | ICDM | PDF 2015 | Deep Feature Synthesis: Towards Automating Data Science Endeavors | James Max Kanter, Kalyan Veeramachaneni | DSAA | PDF Hierarchical Organization of Transformations 2016 | Cognito: Automated Feature Engineering for Supervised Learning | Udayan Khurana, et al. | ICDMW | PDF Meta Learning 2017 | Learning Feature Engineering for Classification | Fatemeh Nargesian, et al. | IJCAI | PDF Reinforcement Learning 2017 | Feature Engineering for Predictive Modeling using Reinforcement Learning | Udayan Khurana, et al. | arXiv | PDF 2010 | Feature Selection as a One-Player Game | Romaric Gaudel, Michele Sebag | ICML | PDF Architecture Search Evolutionary Algorithms 2017 | Large-Scale Evolution of Image Classifiers | Esteban Real, et al. | PMLR | PDF 2002 | Evolving Neural Networks through Augmenting Topologies | Kenneth O.Stanley, Risto Miikkulainen | Evolutionary Computation | PDF Local Search 2017 | Simple and Efficient Architecture Search for Convolutional Neural Networks | Thomoas Elsken, et al. | ICLR | PDF Meta Learning 2016 | Learning to Optimize | Ke Li, Jitendra Malik | arXiv | PDF Reinforcement Learning 2018 | Efficient Neural Architecture Search via Parameter Sharing | Hieu Pham, et al. | arXiv | PDF 2017 | Neural Architecture Search with Reinforcement Learning | Barret Zoph, Quoc V. Le | ICLR | PDF Transfer Learning 2017 | Learning Transferable Architectures for Scalable Image Recognition | Barret Zoph, et al. | arXiv | PDF Frameworks 2017 | Google Vizier: A Service for Black-Box Optimization | Daniel Golovin, et al. | KDD |PDF 2017 | ATM: A Distributed, Collaborative, Scalable System for Automated Machine Learning | T. Swearingen, et al. | IEEE | PDF 2015 | AutoCompete: A Framework for Machine Learning Competitions | Abhishek Thakur, et al. | ICML | PDF Hyperparameter Optimization Bayesian Optimization 2016 | Bayesian Optimization with Robust Bayesian Neural Networks | Jost Tobias Springenberg, et al. | NIPS | PDF 2016 | Scalable Hyperparameter Optimization with Products of Gaussian Process Experts | Nicolas Schilling, et al. | PKDD | PDF 2016 | Taking the Human Out of the Loop: A Review of Bayesian Optimization | Bobak Shahriari, et al. | IEEE | PDF 2016 | Towards Automatically-Tuned Neural Networks | Hector Mendoza, et al. | JMLR | PDF 2016 | Two-Stage Transfer Surrogate Model for Automatic Hyperparameter Optimization | Martin Wistuba, et al. | PKDD | PDF 2015 | Efficient and Robust Automated Machine Learning | PDF 2015 | Hyperparameter Optimization with Factorized Multilayer Perceptrons | Nicolas Schilling, et al. | PKDD | PDF 2015 | Hyperparameter Search Space Pruning - A New Component for Sequential Model-Based Hyperparameter Optimization | Martin Wistua, et al. | PDF 2015 | Joint Model Choice and Hyperparameter Optimization with Factorized Multilayer Perceptrons | Nicolas Schilling, et al. | ICTAI | PDF 2015 | Learning Hyperparameter Optimization Initializations | Martin Wistuba, et al. | DSAA | PDF 2015 | Scalable Bayesian optimization using deep neural networks | Jasper Snoek, et al. | ACM | PDF 2015 | Sequential Model-free Hyperparameter Tuning | Martin Wistuba, et al. | ICDM | PDF 2013 | Auto-WEKA: Combined Selection and Hyperparameter Optimization of Classification Algorithms | PDF 2013 | Making a Science of Model Search: Hyperparameter Optimization in Hundreds of Dimensions for Vision Architectures | J. Bergstra | JMLR | PDF 2012 | Practical Bayesian Optimization of Machine Learning Algorithms | PDF 2011 | Sequential Model-Based Optimization for General Algorithm Configuration(extended version) | PDF Evolutionary Algorithms 2018 | Autostacker: A Compositional Evolutionary Learning System | Boyuan Chen, et al. | arXiv | PDF 2017 | Large-Scale Evolution of Image Classifiers | Esteban Real, et al. | PMLR | PDF Lipschitz Functions 2017 | Global Optimization of Lipschitz functions | C´edric Malherbe, Nicolas Vayatis | arXiv | PDF Local Search 2009 | ParamILS: An Automatic Algorithm Configuration Framework | Frank Hutter, et al. | JAIR | PDF Meta Learning 2008 | Cross-Disciplinary Perspectives on Meta-Learning for Algorithm Selection | PDF Particle Swarm Optimization 2017 | Particle Swarm Optimization for Hyper-parameter Selection in Deep Neural Networks | Pablo Ribalta Lorenzo, et al. | GECCO | PDF 2008 | Particle Swarm Optimization for Parameter Determination and Feature Selection of Support Vector Machines | Shih-Wei Lin, et al. | Expert Systems with Applications | PDF Random Search 2016 | Hyperband: A Novel Bandit-Based Approach to Hyperparameter Optimization | Lisha Li, et al. | arXiv | PDF 2012 | Random Search for Hyper-Parameter Optimization | James Bergstra, Yoshua Bengio | JMLR | PDF 2011 | Algorithms for Hyper-parameter Optimization | James Bergstra, et al. | NIPS | PDF Transfer Learning 2016 | Efficient Transfer Learning Method for Automatic Hyperparameter Tuning | Dani Yogatama, Gideon Mann | JMLR | PDF 2016 | Flexible Transfer Learning Framework for Bayesian Optimisation | Tinu Theckel Joy, et al. | PAKDD | PDF 2016 | Hyperparameter Optimization Machines | Martin Wistuba, et al. | DSAA | PDF 2013 | Collaborative Hyperparameter Tuning | R´emi Bardenet, et al. | ICML | PDF Miscellaneous 2018 | Accelerating Neural Architecture Search using Performance Prediction | Bowen Baker, et al. | ICLR | PDF 2017 | Automatic Frankensteining: Creating Complex Ensembles Autonomously | Martin Wistuba, et al. | SIAM | PDF Tutorials Bayesian Optimization 2010 | A Tutorial on Bayesian Optimization of Expensive Cost Functions, with Application to Active User Modeling and Hierarchical Reinforcement Learning | PDF Meta Learning 2008 | Metalearning - A Tutorial | PDF Articles Bayesian Optimization 2016 | Bayesian Optimization for Hyperparameter Tuning | Link Meta Learning 2017 | Why Meta-learning is Crucial for Further Advances of Artificial Intelligence? | Link 2017 | Learning to learn | Link Slides Automated Feature Engineering Automated Feature Engineering for Predictive Modeling | Udyan Khurana, etc al. | PDF Hyperparameter Optimization Bayesian Optimization Bayesian Optimisation | PDF A Tutorial on Bayesian Optimization for Machine Learning | PDF Books Meta Learning 2009 | Metalearning - Applications to Data Mining | Springer | PDF Projects Advisor | Python | Open Source | Code auto-sklearn | Python | Open Source | Code Auto-WEKA | Java | Open Source | Code Hyperopt | Python | Open Source | Code Hyperopt-sklearn | Python | Open Source | Code SigOpt | Python | Commercial | Link SMAC3 | Python | Open Source | Code RoBO | Python | Open Source | Code BayesianOptimization | Python | Open Source | Code Scikit-Optimize | Python | Open Source | Code HyperBand | Python | Open Source | Code BayesOpt | C++ | Open Source | Code Optunity | Python | Open Source | Code TPOT | Python | Open Source | Code ATM | Python | Open Source | Code Cloud AutoML | Python | Commercial| Link H2O | Python | Commercial | Link DataRobot | Python | Commercial | Link MLJAR | Python | Commercial | Link MateLabs | Python | Commercial | Link MARSGGBO原创 2018-7-14

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