Mobile Search for a Black Hole in an Anonymous Ring
Algorithmica
Hardness and approximation results for Black Hole Search in arbitrary networks
Theoretical Computer Science
Map construction and exploration by mobile agents scattered in a dangerous network
IPDPS '09 Proceedings of the 2009 IEEE International Symposium on Parallel&Distributed Processing
Black Hole Search with Tokens in Interconnected Networks
SSS '09 Proceedings of the 11th International Symposium on Stabilization, Safety, and Security of Distributed Systems
Locating a Black Hole without the Knowledge of Incoming Link
Algorithmic Aspects of Wireless Sensor Networks
Time optimal algorithms for black hole search in rings
COCOA'10 Proceedings of the 4th international conference on Combinatorial optimization and applications - Volume Part II
Synchronous black hole search in directed graphs
Theoretical Computer Science
Tight bounds for scattered black hole search in a ring
SIROCCO'11 Proceedings of the 18th international conference on Structural information and communication complexity
Improving the optimal bounds for black hole search in rings
SIROCCO'11 Proceedings of the 18th international conference on Structural information and communication complexity
Searching for black-hole faults in a network using multiple agents
OPODIS'06 Proceedings of the 10th international conference on Principles of Distributed Systems
Searching for Black Holes in Subways
Theory of Computing Systems - Special Issue: Fun with Algorithms
Black hole search in directed graphs
SIROCCO'09 Proceedings of the 16th international conference on Structural Information and Communication Complexity
Periodic data retrieval problem in rings containing a malicious host
SIROCCO'10 Proceedings of the 17th international conference on Structural Information and Communication Complexity
Complexity of Searching for a Black Hole
Fundamenta Informaticae
Rendezvous of mobile agents in unknown graphs with faulty links
DISC'07 Proceedings of the 21st international conference on Distributed Computing
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Black hole search (Bhs) is the problem of mapping or exploring a network where there are dangerous sites (black holes) that eliminate any incoming searcher without leaving a discernible trace. Dangerous graph exploration (Dge) extends the Bhs problem to include dangerous links (black links). In the literature, both problems have only been studied under the assumption that no faults occur in the network during the exploration. In this paper, we examine the impact that link failures can have on the exploration of dangerous graphs. We study the Dge problem under the following conditions: there are multiple black holes and black links, the network topology is unknown, the searchers are initially scattered in arbitrary locations, and the system is totally asynchronous. In this difficult setting, we assume that links can fail during the computation. We present an algorithm that solves the Dge in the presence of such dynamic link failures. Our solution to the problem works with an optimum number of searchers in a polynomial number of moves. This is the first result dealing with fault-tolerant computations in dangerous graphs.