In previous work, we described G2I2, a system that adjusts the cost function used by an off-road route planning system in order to more closely mimic the route choices made by humans. In this paper, we report on an extension to G2I2, called GUIDE, which adds significant new capabilities. GUIDE has the ability to induce a cost function starting with a set of historical tracks used as training in...

This paper discusses how new technologies for supporting scientific research will possibly influence the librarians’ work. The discussion is conducted in a context that takes into account the emergence of e-infrastructures as means to realize a new model of producing, using and sharing information resources and even to change the concept of information resource itself. At the core of this innov...

Covering models have found many applications in a wide variety of real-world problems; nevertheless, some assumptions of covering models are not realistic enough. Accordingly, a general approach would not be able to answer the needs of encountering varied aspects of real-world considerations. Assumptions like the unavailability of servers, uncertainty, and evaluating more factors at the same ti...

So far, many types of location models have been developed to find optimal spatial patterns according to different spatial metrics such as cost, coverage and availability.  The initial focus of these models is on the location availability of service providers and demand estimates, and some of these models are within the framework of multi-objective programming models.  After the advent of scienc...

In today's competitive markets, firms try to reduce their supply cost by selecting efficient suppliers using different techniques. Several methods can be applied to evaluate the efficiency of supplier base. This paper develops generalized network data envelopment analysis models to examine the efficiency of two-tier supplier bases under cooperative and non-cooperative strategies where each tier...

The aim of this article is to analyze the potential for synergies between climate policies and development in a case study on India focusing on the power sector suboptimalities. To do so, we use IMACLIM-R, a dynamic recursive energy-economy model that represents a second best world with market imperfections and short-run adjustments constraints along a long-term growth path. The analysis sugges...

Real life networks are generally modelled as scale-free networks. Information diffusion in such networks in decentralised environment is a difficult and resource consuming affair. Gossip algorithms have come up as a good solution to this problem. In this paper, we have proposed Adaptive First-Push-Then-Pull gossip algorithm. We show that algorithm works with minimum cost when the transition rou...

This paper presents research methodologies for collecting speech data and gives observations from a recent set of conversational speech collections before describing their outcomes. The presentation begins with a comparison of the relative challenges offered by broadcast news, telephone conversation and meeting recordings. The remainder of the discussion focuses on methods for collection of con...

This paper studies optimal switching on and off the full capacity of an M/M/∞ queue with holding, running and switching costs. The main result is that an average-cost optimal policy either always runs the system or is defined by two thresholds M and N, such that the system is switched on at arrival epochs when the number of customers in the system accumulates to N and it is switched off at depa...

Absract : The success of third-generation mobile communication systems, e.g., UMTS, will depend on the Quality of Service (QoS) that the mobile users will perceive, and whether the QoS levels will be provided in a cost efficient manner. In this perspective, the importance of tools for “proper” planning of a mobile system becomes straightforward. In the context of this paper, we present such pla...