Given two independent sets I and J of a graph G, imagine that a token (coin) is placed on each vertex in I. Then, the Sliding Token problem asks if one could transforms I to J using a sequence of elementary steps, where each step requires sliding a token from one vertex to one of its neighbors, such that the resulting set of vertices where tokens are placed still remains independent. In this pa...

In this paper, a new hybrid algorithm which combines both of token-based and character-based approaches is presented. The basic Levenshtein approach has been extended to token-based distance metric. The distance metric is enhanced to set the proper granularity level behavior of the algorithm. It smoothly maps a threshold of misspellings differences at the character level, and the importance of ...

A simple and cheap algorithm is presented to allow prioritized mutual exclusion. There are several groups. All the members of a same group have the same level priority. Our algorithm is a token-based algorithm. Each group of participants (site) is represented by a tree structure. Inside a group, the requests are recorded in a global queue which circulates simultaneously and together with the to...

This paper deals with the dimensioning of token buckets. Two related problems are formulated and solved. The first is the token bucket allocation problem (TBAP) which is finding the cost-minimal token bucket for the transmission of a given VBR traffic stream, e.g. an MPEG movie, from the user's point of view. This problem has been treated in literature before but as we will show not completely....

In this paper, we propose a token-based fully distributed algorithm with token-asking method for Distributed Mutual Exclusion (DME) in a computer network composed of N nodes that communicate by message exchanges. The main goal is to introduce a new class of token-based DME algorithms called infobased. In some previous algorithms, the request to enter a critical section is sent to all nodes beca...

The group mutual exclusion (GME) problem is a variant of the mutual exclusion problem. In the present paper a token-based group mutual exclusion algorithm, capable of handling transient faults, is proposed. The algorithm uses the concept of dynamic request sets. A time out mechanism is used to detect the token loss; also, a distributed scheme is used to regenerate the token. The worst case mess...

We present in this article a theoretical study and performance results about the impact of the Grid architecture on token-based mutual exclusion algorithms. To this end, both the original token-based Naimi-Tréhel’s algorithm and a hierarchical approach, suitable to cope with the intrinsic heterogeneity of communication latencies of Grid environments, are studied and evaluated.

This report presents a token-based K-mutual exclusion algorithm. The algorithm uses K tokens and a dynamic forest structure for each token. This structure is used to forward token requests. The algorithm is designed to minimize the number of messages and also the delay in entering the critical section, at low as well as high loads. The report presents simulation results for the proposed algorit...

This paper presents a token-based K-mutual exchsion algorithm. The algorithm uses K tokens and a dynamic forest structure for each token. This structure is used to forward token requests. The algorithm is expected to minimize the number of messages and also the delay in entering the critical section, at low as well as high loads. The paper presents samulation results for the proposed algorithm ...