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3846 items in total found

Working Papers | 2014

Predicting Helpfulness of Online Customer Reviews

Srikumar Krishnamoorthy

Helpfulness of online reviews plays an important role in customer purchase decision making process. However, the review helpfulness prediction problem is considered to be quite challenging and hard. This paper aims to explore this problem and build a helpfulness pre-
diction model. Our model utilizes a rich set of features based on textual content of reviews, meta-data of reviews and characteristics of reviewers. The proposed predictive model is validated using six real-life review datasets and the experimental results are found to be
quite promising. Our experimental analysis of the impact of product type such as search and experience goods on review helpfulness also reveals interesting insights.

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Working Papers | 2014

Issues in PPPs in Ports in India

G. Raghuram and Shukla Niraja

PPP mode of investment in Indian ports has made a significant headway and is preferred for investments today. The 12 major ports and about 200 minor ports along the 7,500 km coastline of the country have together traded about 935 mt of cargo in 2012-13. The traffic is growing each year. The share of non major ports is rising and has reached 42% in year 2012-13. The PPP mode was more popular at non major ports controlled by the State Government, than major ports controlled by Central Government. During the XI Plan, the overall investment in the port sector was significantly lower than planned. It has had an impact on the efficacy of PPP investment in this sector. This paper analyses the issues behind this, to evolve the way forward.

The issues which the port authorities or private parties have faced so far should be of interest to stakeholders wanting to leverage the PPP mode of investment. While there are arguments for and against this mode, the overall outlook for PPPs has been positive in terms of bringing about competition, fairness in operations, efficiency and quality of service.

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Working Papers | 2014

The role of complementarity and partner brand price level in new product introduction strategy using bundle offers:
A study on the quality perception of bundle components.

Kapil Khandeparkar

New products are often bundled with strong brands as an introduction strategy. This study helps to understand the scenarios which will be most beneficial to both the products in the bundle. The enhancement effect and categorisation theory is used to explain that the new products quality perception is higher when it is bundled with a strong brand of a higher price and this effect is moderated by the complementarity of the bundled components. Also, the quality perception of the strong brand is rated higher when it is bundled with a new product of assured quality.

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Working Papers | 2014

Bridging the Creativity – Innovation Divide: An Investigation of R&D Professionals' Experiences from India

Vishal Gupta

The present study presents a qualitative study of the process through which creative ideas are converted into new products. Based on a grounded-theoretic investigation of 52 interviews conducted with scientists working in 5 Indian R&D laboratories, the study explores the socio-psychological factors that affect the creativity-innovation conversion process. Our results demonstrate that the critical innovative work behavior that impacts the conversion process is mobilizing support behavior that is defined as promoting ideas to others and garnering support and resources for their implementation. While ideas can occur at the individual (or group) level, unless the individual (or group) mobilizes support for the ideas, the chances for their successful implementation are minimal. The study next explores the individual-, team- and organization-level factors that influence the creativity-innovation process either directly or indirectly (by promoting mobilizing support behavior). The study reveals that for innovation to occur, creativity needs to be backed up by other factors like leadership, team work, organizational factors, fairness and acquisition of resources. It is this interlinking of factors that leads to innovative output. We present a conceptual framework that describes in what ways these factors are linked to each other. Implications for theory and practice are discussed.

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Working Papers | 2014

ICT Adoption and Organizational Change in Public and Private Enterprises

Rakesh Basant and Shruti Sharma

In this paper we explore whether there are differences in IT adoption, as well associated organizational change between private and state owned enterprises. We use two datasets from India to conduct this analysis- primary survey data of about 500 firms in India that contains detailed information on IT related organizational changes at these firms, and a secondary plant-level panel dataset by the Annual Survey of Industries which comprehensively covers the Indian manufacturing sector. We find important differences across the two kinds of enterprises in terms of extent and intensity of adoption as well as organizational structures across both datasets. The survey data suggests that IT induced organizational changes especially in terms of removal of levels of hierarchy are higher in state owned enterprises. The secondary data on the other hand shows that there are no statistically significant differences between the two kinds of enterprises as far as adjustment in composition of supervisory and managerial staff and other skilled workers is concerned.

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Working Papers | 2014

Strengthening Corporate Governance in India - A Review of Legislative and Regulatory Initiatives in 2013

Bala N. Balasubramanian

The passing of the long awaited Companies Act in 2013 is probably the single most important development in Indias history of corporate legislation, next only to the monumental Companies Act 1956 which it replaces. While significant improvements have been effected in required standards of corporate governance, there is also some concern of possible overreach making life more difficult for companies as well as their independent directors. Among the major provisions of the Act are those of restraining voting rights of interested shareholders on related party transactions, recognition of board accountability to stakeholders besides shareholders, and extension of several good governance requirements to relatively large unlisted corporations.

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Working Papers | 2014

Heuristics for the multi-product satiating newsboy problem

Avijit Khanra and Chetan Soman

Due to the preference of satiation (of the profit target) over maximization (of expected profit) in uncertain situations, the newsboy problem with the satiation objective is an important practical problem. In the multi-product setting, practically usable solution methods are available only for two-product and some restricted three-product problems. We develop heuristics to solve larger problems (more number of products). Two search-based heuristics are developed and tested with a large number of versatile test problems.

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Working Papers | 2014

Multi-product newsboy problem with satiation objective

Avijit Khanra

Meeting the prot target is often preferred over maximizing expected prot in uncertain
business environments. Research into the newsboy problem with satiation objective started
quite early. However, the progress has been slow, particularly in the multi-product setting.
We study the general multi-product newsboy problem with satiation objective. A discrete
formulation is adopted. Computational methods for evaluating and maximizing the satiation
probability (i.e., probability of meeting the prot target) are developed. Diculties associated
with the conventional continuous formulation are also discussed.

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Working Papers | 2013

A Dynamic Pricing Approach on Electricity Prices in Indian Context

Kinnary R. Desai and Goutam Dutta

In this paper, we study the mechanism of dynamic pricing of electricity and its opportunities in the Indian context. We compare the economic efficiency of dynamic pricing vis-à-vis the traditional flat tariff of electricity. We analyse various ways in which dynamic tariff can be introduced in the electricity market and we show the Indian experience in this regard. We consider the state of Maharashtra, in particular, to understand how TOD (Time of Day) pricing system has been introduced and how it is more efficient. We develop a mathematical model using pseudo-real data (as per the advice of a renowned sector expert) to show how TOD tariff is more efficient than flat tariff and how RTP (Real Time Pricing) tariff is associated with uncertainty of electricity bills. We further emphasise on how the dynamic pricing system can be modified in order to increase its efficiency.

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Working Papers | 2013

Blinded Tests in 2 x 2 Cross-Over Trial

Kaustav Banerjee, Tathagata Bandyopadhyay, and G. Chattopadhyay

We propose tests for equality of treatment effects in the context of a double-blind 2 x 2 cross-over trial which do not require treatment codes to be unblinded and thus can be used as a part of the interim analyses. We first discuss the set-up of a 2 x 2 cross-over trial and state the important assumptions necessary for our procedure. Section 2 discusses implications of blinded interim data analysis under the givensetting and review the test proposed in Millder et al. [27] while pointing out its limitations. Section 3 introduces two preliminary (blinded) tests for equality of means when the data are collected from a 2 x 2 cross-over trial and study their power properties. Section 4 proposes a procedure to improve upon the performance of the tests proposed in Section 3 which require the assumption of equality of variances for the two treatments. The resulting methodology is a two-stage test and is introduced in Section 5. Section 6 discusses the performance of the two-stage test against the benchmark test which would have been effective had the data been unblinded. At the end we add a few concluding remarks.

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