Intrinsic Reward Reinforcement Learning Agent
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Solution Overview
Problem
Reinforcement learning agents face limitations in designing general reward functions and require task-specific programming, leading to slow convergence and inefficient exploration in complex domains.
Innovation Solution
An intrinsic reward function that rewards the change in complexity of the learned model, allowing agents to explore and learn without task-specific guidance, using measures like description length or negative log likelihood to encourage structural understanding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If reinforcement learning agents use task-specific reward functions, then they can achieve specific goals, but they require hand-tuned parameters and slow convergence
Solution Approach 1:
The agent learns intrinsic reward functions autonomously from interaction data without human intervention. The system automatically discovers what constitutes valuable states and transitions by analyzing patterns in the data, eliminating the need for hand-tuned reward parameters and enabling self-directed learning that converges faster than traditional methods.
Solution Approach 2:
The patent transforms the rigid, hand-crafted reward parameters into dynamic, learned parameters. Instead of fixed reward values specified by designers, the system learns reward parameters from data, allowing the reward structure to adapt and optimize automatically, thereby reducing convergence time while maintaining goal achievement reliability.
2Loss of information
If reinforcement learning agents explore every detail of the environment, then they maximize knowledge, but they become inefficient in highly complex domains
Solution Approach 1:
The intrinsic reward function assigns different reward values to different regions of the state space based on their informational value. Instead of uniform exploration, the agent receives higher rewards for visiting states that are locally more informative or surprising, enabling selective exploration that maximizes knowledge gain while maintaining efficiency in complex domains.
Solution Approach 2:
The agent performs partial exploration by focusing on the most informative aspects of the environment rather than exhaustively exploring every detail. The intrinsic reward mechanism guides the agent to sample sufficient information from critical regions while avoiding redundant exploration, achieving an optimal balance between knowledge maximization and learning efficiency.
Data Source
AI summary
A learning agent is disclosed that receives data in sequence from one or more sequential data sources; generates a model modelling sequences of data and actions; and selects an action maximizing the expected future value of a reward function, wherein the reward function depends at least partly on at least one of: a measure of the change in complexity of the model, or a measure of the complexity of the change in the model. The measure of the change in complexity of the model may be based on, for example, the change in description length of the first part of a two-part code describing one or more sequences of received data and actions, the change in description length of a statistical distribution modelling, the description length of the change in the first part of the two-part code, or the description length of the change in the statistical distribution modelling.

