插即用模型-无神论的反事实政策综合用于深度强化学习的基于推的推
IEEE transactions on neural networks and learning systems
|November 16, 2023
概括
本研究引入了一个模型不可知的反事实合成 (MACS) 策略,以增强强化学习 (RL) 推系统的稀疏用户反数据. 该方法通过生成现实的反事实用户交互来提高RL推代理的性能.
科学领域:
- 人工智能的人工智能
- 机器学习 机器学习
- 推系统是一个推系统.
背景情况:
- 推系统越来越多地使用强化学习 (RL) 来建模动态用户-系统交互.
- 稀少的用户反数据对培训有效的RL推代理人构成重大挑战.
研究的目的:
- 为解决基于RL的推系统中的数据稀疏性问题.
- 通过反事实合成提出一种用于增强用户交互数据的新方法.
主要方法:
- 开发了一个模型不可知的反事实合成 (MACS) 政策,用于数据增强.
- 采用了两种培训方法:与专家演示学习和联合培训.
- 整合了MACS策略与深度决定性策略梯度 (DDPG),软行为体批评 (SAC) 和双延迟DDPG (TD3) 算法.
主要成果:
- 该MACS政策成功地合成了反事实用户交互数据,同时保留了关键用户利益信息.
- 在线模拟和离线数据集的实证结果验证了MACS政策的有效性和通用性.
- 拟议的方法明显提高了RL推代理的性能.
结论:
- 在RL推系统中,MACS策略为数据增强提供了强大的解决方案.
- 这种方法有效地减轻了稀疏用户反的挑战,从而提高了推的性能.
- 该方法在不同的RL算法和数据集中显示出强大的概括能力.
更多相关视频
05:47Evidence-based Knowledge Synthesis and Hypothesis Validation: Navigating Biomedical Knowledge Bases via Explainable AI and Agentic Systems
Published on: June 13, 2025
236
03:14Augmenting Large Language Models via Vector Embeddings to Improve Domain-Specific Responsiveness
Published on: December 6, 2024
596
相关概念视频
Predicting Products: Substitution vs. Elimination
11.7K
When a nucleophile and an alkyl halide react, nucleophilic substitution and β-elimination reactions compete to generate products.
The following factors can influence the mechanisms competing against each other:
The following factors can influence the mechanisms competing against each other:
11.7K
Reinforcement Schedules
156
Positive reinforcement is a powerful method for teaching new behaviors to both animals and humans. B.F. Skinner demonstrated this with his experiments using rats in a Skinner box. When a rat pressed a lever, it received a food pellet. This immediate reward encouraged the rat to repeat the behavior. This method, where a reward follows every instance of the behavior, is known as continuous reinforcement. It is highly effective for establishing new behaviors quickly.
Once a behavior is learned,...
Once a behavior is learned,...
156
Randomized Experiments
7.0K
The randomization process involves assigning study participants randomly to experimental or control groups based on their probability of being equally assigned. Randomization is meant to eliminate selection bias and balance known and unknown confounding factors so that the control group is similar to the treatment group as much as possible. A computer program and a random number generator can be used to assign participants to groups in a way that minimizes bias.
Simple randomization
Simple...
Simple randomization
Simple...
7.0K
Associative Learning
407
Associative learning is a fundamental concept in behavioral psychology, wherein a connection is established between two stimuli or events, leading to a learned response. This process is critical in understanding how behaviors are acquired and modified. Conditioning, the mechanism through which associations are formed, can be divided into two main types: classical conditioning and operant conditioning, each elucidating different aspects of associative learning.
Classical conditioning, also known...
Classical conditioning, also known...
407
Predicting Reaction Outcomes
8.4K
Kinetics describes the rate and path by which a reaction occurs. In contrast, thermodynamics deals with state functions and describes the properties, behavior, and components of a system. It is not concerned with the path taken by the process and cannot address the rate at which a reaction occurs. Although it does provide information about what can happen during a reaction process, it does not describe the detailed steps of what appears on an atomic or a molecular level. On the other hand,...
8.4K
Predicting Products: SN1 vs. SN2
13.4K
Nucleophilic substitution reactions of alkyl halides can proceed via an SN1 or an SN2 mechanism. While in SN2 reactions, the nucleophile attacks the substrate simultaneously as the leaving group departs, in SN1 reactions, the substrate first dissociates to give the carbocation intermediate. Various factors such as the structure of the substrate, the strength of the nucleophile, and the nature of the solvent promote one mechanism over the other.
With increased substitution on the alkyl halide,...
With increased substitution on the alkyl halide,...
13.4K
