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The most efficient planning algorithms recently developed are mainly based on Graphplan system or on sat-isfiability approach. In this paper we present a new approach to plan generation based on planning graph analysis, which can be considered as a bridge between the two planning approaches. The method exploits the propagation of planning axioms and(More)
In this paper a planning framework based on Ant Colony Optimization techniques is presented. It is well known that finding optimal solutions to planning problems is a very hard computational problem. Stochastic methods do not guarantee either optimality or completeness , but it has been proved that in many applications they are able to find very good, often(More)
In this paper an application of the meta–heuristic Ant Colony Optimization to optimal planning is presented. It is well known that finding out optimal solutions to planning problem is a very hard computational problem. Approximate methods do not guarantee either optimality or completeness, but it has been proved that in many applications they are able to(More)
Recent findings show that online reviews, blogs, and discussion forums on chronic diseases and drugs are becoming important supporting resources for patients. Extracting information from these substantial bodies of texts is useful and challenging. We developed a generative probabilistic aspect mining model (PAMM) for identifying the aspects/topics relating(More)
In this paper a planning framework based on Ant Colony Optimization techniques is presented. Optimal planning is a very hard computational problem which has been coped with different method-ologies. Approximate methods do not guarantee either optimality or completeness, but it has been proved that in many applications they are able to find very good, often(More)
INTRODUCTION AND HYPOTHESIS The objective of this study was to report 1 year anatomical and functional outcomes of trocar-guided total tension-free vaginal mesh (Prolift) repair for post-hysterectomy vaginal vault prolapse with one continuous piece of polypropylene mesh. METHODS We conducted a prospective observational cohort study of 46 patients. A(More)
ACOplan is a planner based on the ant colony optimization framework. Using the ACO framework to solve planning optimization problems , one of the main issues to address is the choice of informative and easy to compute pheromone models. In this paper we present and discuss an experimental evaluation of the several pheromone models implemented in ACOPlan. The(More)
This paper present a technique based on genetic algorithms for generating online adaptive services. Online adaptive systems provide flexible services to a mass of clients/users for maximising some system goals, they dynamically adapt the form and the content of the issued services while the population of clients evolve over time. The idea of online genetic(More)
Effective sharing of diverse social media is often inhibited by limitations in their search and discovery mechanisms, which are particularly restrictive for media that do not lend themselves to automatic processing or indexing. Here, we present the structure and mechanism of an adaptive search engine which is designed to overcome such limitations. The basic(More)