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Abstract-The paper provides a new deterministic Q-learning with a presumed knowledge about the distance from the current state to both the next state and the goal. This knowledge is efficiently used to update the entries in the Q-table once only by utilizing four derived properties of the Q-learning, instead of repeatedly updating them like the classical Q-learning. Naturally, the proposed algorithm has an insignificantly small timecomplexity in comparison to its classical counterpart. Further, the proposed algorithm stores the Q-value for the best possible action at a state, and thus saves significant storage. Experiments undertaken on simulated maze and real platforms confirm that the Q-table obtained by the proposed Q-learning when used for path-planning application of mobile robots outperforms both the classical and extended Q-learning with respect to three metrics: traversal time, number of states traversed, and 90 o turns required. Reduction in 90 o turnings minimizes the energy consumption, and thus has importance in robotics literature.

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Unmanned aerial vehicles (UAVs) are used in team for detecting targets and keeping them in its sensor range. There are various algorithms available for searching and monitoring targets. The complexity of the search algorithm increases if the number of nodes is increased. This paper focuses on multi UAVs path planning and Path Finding algorithms. Number of Path Finding and Search algorithms was applied to various environments, and their performance compared. The number of searches and also the computation time increases as the number of nodes increases. The various algorithms studied are Dijkstra's algorithm, Bellman Ford's algorithm, Floyd-Warshall's algorithm and the AStar algorithm. These search algorithms were compared. The results show that the AStar algorithm performed better than the other search algorithms. These path finding algorithms were compared so that a path for communication can be established and monitored.

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This chapter provides an introduction to Local Binary Patterns (LBP) and important new variants. Some issues with LBP variants are discussed. A summary of the chapters on LBP is also presented.

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