Indian Institute of Management Calcutta

About: Indian Institute of Management Calcutta is a education organization based out in Kolkata, India. It is known for research contribution in the topics: Supply chain & Context (language use). The organization has 415 authors who have published 1354 publications receiving 21725 citations. The organization is also known as: IIMC & IIM Calcutta.

SALCUSTOR: A Multidimensional Scale for Salespersons’ Customer Orientation and Implications for Customer-Oriented Selling: Empirical Evidence From India

Abstract: Recent studies have highlighted the limitations in the applicability of the selling-versus-customer orientation scale as a measure of a salesperson's customer orientation. Therefore, few scholars call for new research on identifying the underlying dimensions of customer-oriented selling and for developing a new scale. This study provides a new conceptualization of a salesperson's customer orientation and develops and validates a multidimensional scale to measure it. This scale, SALCUSTOR, uses multiple samples of data from salespersons from India. SALCUSTOR assesses the degree to which a salesperson (a) provides relevant and correct information to his/her customers, (b) understands and learns the underlying needs of the customers, and (c) maintains relationships with customers and thinks about their long-term benefits. We establish the reliability, convergent, discriminant, and nomological validity of SALCUSTOR. Managers can use SALCUSTOR to identify specific gaps in the three dimensions of custo...

A Routing and Wavelength Assignment (RWA) Technique to Minimize the Number of SONET ADMs in WDM Rings

Abstract: WDM networks are increasingly gaining popularity as the backbone networks all over the world. In WDM network planning, electronic equipments like ADMs contribute heavily towards the capital expenditure of the network (Each ADM costs $50,000-$200,000). In WDM rings, determining minimum number of ADMs is NP-Hard. All the previous works have focused on Wavelength Assignment problem by keeping the routing fixed. In this paper, we suggest an integrated topology independent procedure called M3AWI (Minimum Average Minimum Weight Minimum Intersection). M3AWI is used to solve problems on four different types of routing namely, clockwise routing, Anti-clockwise routing, shortest-path routing, and hybrid routing. Our experimental results show that the combined Routing and Wavelength assignment (RWA) algorithms on an average save around 10% of the ADMs.We have also shown that the distribution of lightpaths is an important parameter to the service providers for selecting a routing policy.

An Efficient Algorithm for Real-Time Frequent Pattern Mining for Real-Time Business Intelligence Analytics

Abstract: Finding frequent patterns from databases has been the most time consuming process in data mining tasks, like association rule mining. Frequent pattern mining in real-time is of increasing thrust in many business applications such as e-commerce, recommender systems, and supply-chain management and group decision support systems, to name a few. A plethora of efficient algorithms have been proposed till date, among which, vertical mining algorithms have been found to be very effective, usually outperforming the horizontal ones. However, with dense datasets, the performances of these algorithms significantly degrade. Moreover, these algorithms are not suited to respond to the real-time need. In this paper, we describe BDFS(b)-diff-sets, an algorithm to perform real-time frequent pattern mining using diff-sets and limited computing resources. Empirical evaluations show that our algorithm can make a fair estimation of the probable frequent patterns and reaches some of the longest frequent patterns much faster than the existing algorithms.

Arithmetic algorithms for ternary number system

Abstract: The use of multi-valued logic in VLSI circuits can reduce the chip area significantly. Moreover, there are several additional advantages of using multi-valued logic in VLSI over the conventional Binary logic, such as energy efficiency, cost-effectiveness and so on. It has been shown that Base-3 number system is nearly optimal for computation. In this paper we have studied some existing logical operation on ternary number system. We have also discussed some of the existing arithmetic operations using ternary number system. Some new algorithms for arithmetic operations have also been proposed, and shown to be quite efficient in time complexity.

On the positive definiteness of the information matrix under the binary and poisson mixed models

Abstract: Binary and Poisson generalized linear mixed models are used to analyse over/under-dispersed proportion and count data, respectively. As the positive definiteness of the information matrix is a required property for valid inference about the fixed regression vector and the variance components of the random effects, this paper derives the relevant necessary and sufficient conditions under both these models. It is found that the conditions for the positive definiteness are not identical for these two nonlinear mixed models and that a mere analogy with the usual linear mixed model does not dictate these conditions.