Exploration-Exploitation Strategies are approaches used to balance trying new options with using known, rewarding ones. The aim is to find the best possible outcome by sometimes exploring unfamiliar choices and sometimes sticking with what already works. These strategies are often used in decision-making systems, such as recommendation engines or reinforcement learning, to improve long-term results.
Category: Reinforcement Learning Systems
Reward Function Engineering
Reward function engineering is the process of designing and adjusting the rules that guide how an artificial intelligence or robot receives feedback for its actions. The reward function tells the AI what is considered good or bad behaviour, shaping its decision-making to achieve specific goals. Careful design is important because a poorly defined reward function…
Deep Deterministic Policy Gradient
Deep Deterministic Policy Gradient (DDPG) is a machine learning algorithm used for teaching computers how to make decisions in environments where actions are continuous, such as steering a car or controlling a robot arm. It combines two approaches: learning a policy to choose actions and learning a value function to judge how good those actions…
Imitation Learning Techniques
Imitation learning techniques are methods in artificial intelligence where a computer or robot learns to perform tasks by observing demonstrations, usually from a human expert. Instead of programming every action or rule, the system watches and tries to mimic the behaviour it sees. This approach helps machines learn complex tasks quickly by copying examples, making…
Multi-Objective Reinforcement Learning
Multi-Objective Reinforcement Learning is a type of machine learning where an agent learns to make decisions by balancing several goals at the same time. Instead of optimising a single reward, the agent considers multiple objectives, which can sometimes conflict with each other. This approach helps create solutions that are better suited to real-life situations where…
Reward Sparsity Handling
Reward sparsity handling refers to techniques used in machine learning, especially reinforcement learning, to address situations where positive feedback or rewards are infrequent or delayed. When an agent rarely receives rewards, it can struggle to learn which actions are effective. By using special strategies, such as shaping rewards or providing hints, learning can be made…
Policy Gradient Optimization
Policy Gradient Optimisation is a method used in machine learning, especially in reinforcement learning, to help an agent learn the best actions to take to achieve its goals. Instead of trying out every possible action, the agent improves its decision-making by gradually changing its strategy based on feedback from its environment. This approach directly adjusts…
Sample-Efficient Reinforcement Learning
Sample-efficient reinforcement learning is a branch of artificial intelligence that focuses on training systems to learn effective behaviours from as few interactions or data samples as possible. This approach aims to reduce the amount of experience or data needed for an agent to perform well, making it practical for real-world situations where gathering data is…
Contextual Bandit Algorithms
Contextual bandit algorithms are a type of machine learning method used to make decisions based on both past results and current information. They help choose the best action by considering the context or situation at each decision point. These algorithms learn from feedback over time to improve future choices, balancing between trying new actions and…
Model-Free RL Algorithms
Model-free reinforcement learning (RL) algorithms help computers learn to make decisions by trial and error, without needing a detailed model of how their environment works. Instead of predicting future outcomes, these algorithms simply try different actions and learn from the rewards or penalties they receive. This approach is useful when it is too difficult or…