2015 15th International Conference on Intelligent Systems Design and Applications (ISDA), 2015
Cybersecurity is an ever-changing ecosystem with a vast and highly complicated field of study, in... more Cybersecurity is an ever-changing ecosystem with a vast and highly complicated field of study, involving specific confidential information which is the most important element for each organization, regardless its industry segment; accordingly, this matter requires continuous attention. The cybersecurity is crucial due to its strong presence in national security. In this respect, States, enterprises and private individuals should be present as stakeholders in a national, regional and international cybersecurity vision. However, an effective national cybersecurity strategy conforms to international standards serves to preserve organization's information assets. The standard is to support a cybersecurity consistent approach including legal, technological and organizational dimensions, as more cybersecurity is mainly based on technology, management procedure, organizational structure, laws and human competence. The promise of this research program is to identify the key areas for an effective cybersecurity strategy addressed to any organization (Administration or enterprise) which will be adapted according to the internal context -taking into account successful experiences in this context -in order to develop a favorable recommended framework for cybersecurity strategy implementation that ensures an acceptable information security level.
2015 IEEE/ACS 12th International Conference of Computer Systems and Applications (AICCSA), 2015
An effective national cybersecurity strategy conforms to international standards serves to preser... more An effective national cybersecurity strategy conforms to international standards serves to preserve organization's information assets. The principle is to support a cybersecurity consistent approach including legal, technological and organizational dimensions. The promise of this research program is to identify the key areas for an effective cybersecurity strategy addressed to organizations (administration or enterprise) in order to develop a favorable recommendation framework for cybersecurity strategy implementation that ensure an acceptable information security level. Our main aim is to develop a platform for an effective cybersecurity strategy build on a successful experience of cybersecurity strategies and turn around international standard and referential such as ISO27002 and ITIL.
European Conference on Artificial Intelligence, 2008
We propose a new algorithm for solving Distributed Constraint Optimization Problems (DCOPs). Our ... more We propose a new algorithm for solving Distributed Constraint Optimization Problems (DCOPs). Our algorithm, called DyBop, is based on branch and bound search with dynamic order- ing of agents. A distinctive feature of this algorithm is tha t it uses the concept of valued nogood. Combining lower bounds on inferred valued nogoods computed cooperatively helps pruning dynamically unfeasible sub-problems and
In MultiAgent systems, Distributed Constraint Optimization Problem (DCOP) has been used as a form... more In MultiAgent systems, Distributed Constraint Optimization Problem (DCOP) has been used as a formalism to model a wide range of agents coordination issues. The Asynchronous forward-bounding with backjumping (AFB-BJ) algorithm was recently proposed as a new way to solve DCOP. The AFB-BJ shows better performance in comparison R. Ezzahir et al. to Adopt algorithm. In this paper, we introduce Asynchronous Breadth-First Search DCOP algorithm (ABFS) that improves AFB-BJ. In ABFS we use a new search strategy based on tree structure where the agents are ordered on a breadth first search traversal. Detailed experimental results show that on benchmark problems (random Max-DisCSPs, graph coloring and Meeting Schedule problems) the proposed algorithm (ABFS) obtains more improvements than AFB-BJ algorithm.
In this paper, we present a multi-agent approach for solving distributed constraint satisfaction ... more In this paper, we present a multi-agent approach for solving distributed constraint satisfaction problems (DisCS P). In this approach, each agent has to solve its own local problem before seeking a global consistent solution. For this, the different agents communicate by exchanging messages in order to find a solution satisfying all intra-agent and inter-agent constraints. Our algorithm, Multi-DBS, solves DisCSP where the local problem of each agent is complex (composed of several variables and constraints).
Agile mode projects are increasingly popular among IT Department, including the most complex orga... more Agile mode projects are increasingly popular among IT Department, including the most complex organizations. The deployment of agility on a larger scale fits over a long period because the motivations are part of a persistent setting. The deployment of large-scale agility is therefore based on a deep and lasting transformation of the organization. In order to support transformational business changes, IT must streamline the top-down process of new IT processes. The success of an IT service and asset management depends on innovation, agility, and efficiency to accompany the transformation of the organization from a traditional vision to a digital vision. The aim of this article is to propose a practical agile framework to improve IT service and asset management ITSM/ITAM processes through a case study in the organization. The finding will help organizations to assess their capabilities and to address the procedural, technical and human aspects of IT service and asset management.
Advances in Intelligent Systems and Computing, 2016
There is a huge paucity of empirical researches on Information Technology Governance (ITG) in pub... more There is a huge paucity of empirical researches on Information Technology Governance (ITG) in public sector organizations even with the noticeable growing importance of IT in the public sector through several IT projects. ITG happens to be one of the most important levels of governance. It'is an important approach to structure process through relational mechanisms. There is little evidence that success in implementing ITG reforms leads to more rapid and inclusive economics. This paper aims to study the importance of ITG in public sector organizations. The public sector is considered to be a set of organizations with the mission to serve citizens. Furthermore, this paper is going to come up with the answer to an essential question which is if ITG should rely on stable functions of a public sector organization, or should it consider broader and more evolving objectives touching the whole government ?
Advances in Intelligent Systems and Computing, 2016
There is a huge paucity of empirical researches on Information Technology Governance (ITG) in pub... more There is a huge paucity of empirical researches on Information Technology Governance (ITG) in public sector organizations even with the noticeable growing importance of IT in the public sector through several IT projects. ITG happens to be one of the most important levels of governance. It'is an important approach to structure process through relational mechanisms. There is little evidence that success in implementing ITG reforms leads to more rapid and inclusive economics. This paper aims to study the importance of ITG in public sector organizations. The public sector is considered to be a set of organizations with the mission to serve citizens. Furthermore, this paper is going to come up with the answer to an essential question which is if ITG should rely on stable functions of a public sector organization, or should it consider broader and more evolving objectives touching the whole government ?
Distributed constraint satisfaction problems based on nogoods reasoning (2) seem to be the best a... more Distributed constraint satisfaction problems based on nogoods reasoning (2) seem to be the best approach in terms of theoretical time complexity. However, only few optimization protocols get the most out of valued nogoods's power (16). In this paper, we present a new search algorithm for distributed constraint optimization problems (DCOPs), called Distributed Dynamic Branch & Bound (DisDB&B). Agents assigns their
Open-source platforms are very useful for development and experimentation in constraint programmi... more Open-source platforms are very useful for development and experimentation in constraint programming. However, until recently, no such platform existed for distributed constraint programming. This paper presents DisChoco, a platform for distributed constraint programming. DisChoco is a Java library implemented using the Choco solver and simple agent communication infrastructure (SACI). DisChoco can be used for simulation of a multi-agents environment on a single Java virtual machine, or performed in an environment physically distributed for a realistic use. DisChoco takes into account agent with a complex local problem, message loss, message corruption, and message delay. The implementation of DisChoco was made to offer a modular software architecture which accepts extensions easily. This paper presents the software architecture and illustrates how to implement a specific protocol.
2007 International Symposium on Computational Intelligence and Intelligent Informatics, 2007
The Asynchronous BackTracklng (ABT) algorithm is a well known algorithm for solving distributed c... more The Asynchronous BackTracklng (ABT) algorithm is a well known algorithm for solving distributed constraint satisfaction problems. However, several work which interest to ABT suppose that each agent owns one single variable. In this paper, we present the compilation formulation for Asynchronous Backtracking with complex local problems, resulting in the ABT-cf algorithm. The ABT-cf algorithm is described in detail and its
We propose a new algorithm for solving Distributed Constraint Optimization Problems (DCOPs). Our ... more We propose a new algorithm for solving Distributed Constraint Optimization Problems (DCOPs). Our algorithm, called DyBop, is based on branch and bound search with dynamic ordering of agents. A distinctive feature of this algorithm is that it uses the concept of valued nogood. Combining lower bounds on inferred valued nogoods computed cooperatively helps pruning dynamically unfeasible sub-problems and speeds up the search. DyBop requires a polynomial space at each agent. Experiments show that DyBop has significantly better performance than other DCOP algorithms.
In MultiAgent systems, Distributed Constraint Optimization Problem (DCOP) has been used as a form... more In MultiAgent systems, Distributed Constraint Optimization Problem (DCOP) has been used as a formalism to model a wide range of agents coordination issues. The Asynchronous forward-bounding with backjumping (AFB-BJ) algorithm was recently proposed as a new way to solve DCOP. The AFB-BJ shows better performance in comparison R. Ezzahir et al.
2015 15th International Conference on Intelligent Systems Design and Applications (ISDA), 2015
Cybersecurity is an ever-changing ecosystem with a vast and highly complicated field of study, in... more Cybersecurity is an ever-changing ecosystem with a vast and highly complicated field of study, involving specific confidential information which is the most important element for each organization, regardless its industry segment; accordingly, this matter requires continuous attention. The cybersecurity is crucial due to its strong presence in national security. In this respect, States, enterprises and private individuals should be present as stakeholders in a national, regional and international cybersecurity vision. However, an effective national cybersecurity strategy conforms to international standards serves to preserve organization's information assets. The standard is to support a cybersecurity consistent approach including legal, technological and organizational dimensions, as more cybersecurity is mainly based on technology, management procedure, organizational structure, laws and human competence. The promise of this research program is to identify the key areas for an effective cybersecurity strategy addressed to any organization (Administration or enterprise) which will be adapted according to the internal context -taking into account successful experiences in this context -in order to develop a favorable recommended framework for cybersecurity strategy implementation that ensures an acceptable information security level.
2015 IEEE/ACS 12th International Conference of Computer Systems and Applications (AICCSA), 2015
An effective national cybersecurity strategy conforms to international standards serves to preser... more An effective national cybersecurity strategy conforms to international standards serves to preserve organization's information assets. The principle is to support a cybersecurity consistent approach including legal, technological and organizational dimensions. The promise of this research program is to identify the key areas for an effective cybersecurity strategy addressed to organizations (administration or enterprise) in order to develop a favorable recommendation framework for cybersecurity strategy implementation that ensure an acceptable information security level. Our main aim is to develop a platform for an effective cybersecurity strategy build on a successful experience of cybersecurity strategies and turn around international standard and referential such as ISO27002 and ITIL.
European Conference on Artificial Intelligence, 2008
We propose a new algorithm for solving Distributed Constraint Optimization Problems (DCOPs). Our ... more We propose a new algorithm for solving Distributed Constraint Optimization Problems (DCOPs). Our algorithm, called DyBop, is based on branch and bound search with dynamic order- ing of agents. A distinctive feature of this algorithm is tha t it uses the concept of valued nogood. Combining lower bounds on inferred valued nogoods computed cooperatively helps pruning dynamically unfeasible sub-problems and
In MultiAgent systems, Distributed Constraint Optimization Problem (DCOP) has been used as a form... more In MultiAgent systems, Distributed Constraint Optimization Problem (DCOP) has been used as a formalism to model a wide range of agents coordination issues. The Asynchronous forward-bounding with backjumping (AFB-BJ) algorithm was recently proposed as a new way to solve DCOP. The AFB-BJ shows better performance in comparison R. Ezzahir et al. to Adopt algorithm. In this paper, we introduce Asynchronous Breadth-First Search DCOP algorithm (ABFS) that improves AFB-BJ. In ABFS we use a new search strategy based on tree structure where the agents are ordered on a breadth first search traversal. Detailed experimental results show that on benchmark problems (random Max-DisCSPs, graph coloring and Meeting Schedule problems) the proposed algorithm (ABFS) obtains more improvements than AFB-BJ algorithm.
In this paper, we present a multi-agent approach for solving distributed constraint satisfaction ... more In this paper, we present a multi-agent approach for solving distributed constraint satisfaction problems (DisCS P). In this approach, each agent has to solve its own local problem before seeking a global consistent solution. For this, the different agents communicate by exchanging messages in order to find a solution satisfying all intra-agent and inter-agent constraints. Our algorithm, Multi-DBS, solves DisCSP where the local problem of each agent is complex (composed of several variables and constraints).
Agile mode projects are increasingly popular among IT Department, including the most complex orga... more Agile mode projects are increasingly popular among IT Department, including the most complex organizations. The deployment of agility on a larger scale fits over a long period because the motivations are part of a persistent setting. The deployment of large-scale agility is therefore based on a deep and lasting transformation of the organization. In order to support transformational business changes, IT must streamline the top-down process of new IT processes. The success of an IT service and asset management depends on innovation, agility, and efficiency to accompany the transformation of the organization from a traditional vision to a digital vision. The aim of this article is to propose a practical agile framework to improve IT service and asset management ITSM/ITAM processes through a case study in the organization. The finding will help organizations to assess their capabilities and to address the procedural, technical and human aspects of IT service and asset management.
Advances in Intelligent Systems and Computing, 2016
There is a huge paucity of empirical researches on Information Technology Governance (ITG) in pub... more There is a huge paucity of empirical researches on Information Technology Governance (ITG) in public sector organizations even with the noticeable growing importance of IT in the public sector through several IT projects. ITG happens to be one of the most important levels of governance. It'is an important approach to structure process through relational mechanisms. There is little evidence that success in implementing ITG reforms leads to more rapid and inclusive economics. This paper aims to study the importance of ITG in public sector organizations. The public sector is considered to be a set of organizations with the mission to serve citizens. Furthermore, this paper is going to come up with the answer to an essential question which is if ITG should rely on stable functions of a public sector organization, or should it consider broader and more evolving objectives touching the whole government ?
Advances in Intelligent Systems and Computing, 2016
There is a huge paucity of empirical researches on Information Technology Governance (ITG) in pub... more There is a huge paucity of empirical researches on Information Technology Governance (ITG) in public sector organizations even with the noticeable growing importance of IT in the public sector through several IT projects. ITG happens to be one of the most important levels of governance. It'is an important approach to structure process through relational mechanisms. There is little evidence that success in implementing ITG reforms leads to more rapid and inclusive economics. This paper aims to study the importance of ITG in public sector organizations. The public sector is considered to be a set of organizations with the mission to serve citizens. Furthermore, this paper is going to come up with the answer to an essential question which is if ITG should rely on stable functions of a public sector organization, or should it consider broader and more evolving objectives touching the whole government ?
Distributed constraint satisfaction problems based on nogoods reasoning (2) seem to be the best a... more Distributed constraint satisfaction problems based on nogoods reasoning (2) seem to be the best approach in terms of theoretical time complexity. However, only few optimization protocols get the most out of valued nogoods's power (16). In this paper, we present a new search algorithm for distributed constraint optimization problems (DCOPs), called Distributed Dynamic Branch & Bound (DisDB&B). Agents assigns their
Open-source platforms are very useful for development and experimentation in constraint programmi... more Open-source platforms are very useful for development and experimentation in constraint programming. However, until recently, no such platform existed for distributed constraint programming. This paper presents DisChoco, a platform for distributed constraint programming. DisChoco is a Java library implemented using the Choco solver and simple agent communication infrastructure (SACI). DisChoco can be used for simulation of a multi-agents environment on a single Java virtual machine, or performed in an environment physically distributed for a realistic use. DisChoco takes into account agent with a complex local problem, message loss, message corruption, and message delay. The implementation of DisChoco was made to offer a modular software architecture which accepts extensions easily. This paper presents the software architecture and illustrates how to implement a specific protocol.
2007 International Symposium on Computational Intelligence and Intelligent Informatics, 2007
The Asynchronous BackTracklng (ABT) algorithm is a well known algorithm for solving distributed c... more The Asynchronous BackTracklng (ABT) algorithm is a well known algorithm for solving distributed constraint satisfaction problems. However, several work which interest to ABT suppose that each agent owns one single variable. In this paper, we present the compilation formulation for Asynchronous Backtracking with complex local problems, resulting in the ABT-cf algorithm. The ABT-cf algorithm is described in detail and its
We propose a new algorithm for solving Distributed Constraint Optimization Problems (DCOPs). Our ... more We propose a new algorithm for solving Distributed Constraint Optimization Problems (DCOPs). Our algorithm, called DyBop, is based on branch and bound search with dynamic ordering of agents. A distinctive feature of this algorithm is that it uses the concept of valued nogood. Combining lower bounds on inferred valued nogoods computed cooperatively helps pruning dynamically unfeasible sub-problems and speeds up the search. DyBop requires a polynomial space at each agent. Experiments show that DyBop has significantly better performance than other DCOP algorithms.
In MultiAgent systems, Distributed Constraint Optimization Problem (DCOP) has been used as a form... more In MultiAgent systems, Distributed Constraint Optimization Problem (DCOP) has been used as a formalism to model a wide range of agents coordination issues. The Asynchronous forward-bounding with backjumping (AFB-BJ) algorithm was recently proposed as a new way to solve DCOP. The AFB-BJ shows better performance in comparison R. Ezzahir et al.
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Papers by M. Belaissaoui