Over the past decade, Monte Carlo Tree Search (MCTS) and specifically Upper Confidence Bound in Trees (UCT) have proven to be quite effective in large probabilistic planning domains. In this paper, we focus on how values are backpropagated in the MCTS tree, and apply complex return strategies from the Reinforcement Learning (RL) literature to MCTS, producing 4 new MCTS variants. We demonstrate ...

Cloud computing now a day's become most popular and reliable computing technique for organizations and individuals. In the cloud environments, data availability and backup replication are critical and complex issues in the an efficient fault tolerance policy is the major. Fault tolerance policy is the strategy in action when a fault occurs in the system. Taking backups is the one of the most us...

In this paper, we show two process allocation schemes to tolerate multiple faults when the primary-backup replication method is used. The rst scheme, called multiple backup scheme, is running multiple backup processes for each process to tolerate multiple faults. The second scheme, called regenerative backup scheme, is running only one backup process for each process, but regenerates backup pro...

In this paper, we show two process allocation schemes to tolerate multiple faults when the primary-backup replication method is used. The first scheme, called multiple backup scheme, is running multiple backup processes for each process to tolerate multiple faults. The second scheme, called regenerative backup scheme, is running only one backup process for each process, but re-generates backup ...

This paper describes two similar user-initiated methods to backup and restore PC workstations over an ethernet network. The first method concerns ‘‘PC Hardware All Alike,’’ or the backup and restoring of sets of identical disk images across many identical systems. The second method is the backup and restoring of ‘‘PC Hardware All Different,’’ which manages unique disk images on individual syste...

A backup power supply system can provide electrical energy for load in harsh environment without grid, and plays a very important role natural disaster rescue military application. Compared with traditional sources, the proton-exchange membrane fuel cell has advantages of good low temperature start-up performance, noise, high efficiency density, no carbon emission, which gradually becomes main ...

In a primary-backup system, transaction processing takes place at the primary and the log records generated are propagated to the backup which uses them to reconstruct a recent state of the database. If the primary fails, the backup takes over transaction processing without causing users to observe a breach in service. Existing approaches can be broadly classi ed as 2-safe or 1-safe based on wh...

Data backup in data center networks (DCNs) is critical to minimize the data loss under disaster. This paper considers the cost-efficient data backup for DCNs against a disaster with ε early warning time. Given geo-distributed DCNs and such a ε-time early warning disaster, we investigate the issue of how to back up the data in DCN nodes under risk to other safe DCN nodes within the ε early warni...

We can distinguish three basic properties of information security, which should be implemented in nearly all IT systems: confidentiality, integrity and availability. Confidentiality means to protect the information against unauthorized access. Integrity is mentioned as a warranty of authenticity of information; it is also connected with protection against unauthorized interference. Availability...