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Product bundling is widely adopted for information goods and online services because it can increase profit for companies. For example, cable companies often bundle Internet access and video streaming services together. However, it is challenging to obtain an optimal bundling strategy, not only because it is computationally expensive, but also that customers’ private information (e.g., valuations...
Granger causality is proposed to fuse stock prices and social media sentiment information for stock market prediction. Sentiment extraction is performed on the Twitter data from major stock companies. Analysis shows that authoritative user's sentiment affects the other users after an event with the lag of 3 days. The prediction is performed for Twitter and stock data from four companies. The sentiment...
When analyzing competition in telecommunication markets it is fundamental to take into account their specific characteristics. Moreover, it is important to understand the temporal evolution of competition as a result of multiple contextual factors. For these reasons the present study analyzes competition in mobile telecommunications, measured through the Lerner Index, and explains its evolution through...
The paper proposes company's investment activity simulation model; on its basis we investigate the behavior of company's fundamental value under different control parameters. The interaction of bank and corporate borrower's value growth is analyzed. On the basis of regularities obtained a set of decision principles has been formulated determining bank's decision on appropriateness of financial resources...
This paper examines the problem of choice investment strategies of firms in an oligopoly markets. We study the impact of investment strategies of companies on its financial performance and the efficiency of investment under demand uncertainty and competition in the market. A mathematical model describing the investment behavior of firms in an oligopoly markets presented. A solution of the problem...
Estimating the difficulty of tasks is imperative for project planning, task assignment, and cost calculation. However, little is known about how and for what purpose software practitioners estimate task difficulty in their day-to-day work. In this paper, we interviewed 15 professionals to understand their needs and perceptions when estimating task difficulty. We find that practitioners do estimate...
Task allocations in collaboration are complex. This paper presents a challenging assignment problem, called Group Role Assignment with Agents' Busyness Degrees (GRAABD). The solution to this problem aims at creating a high-performance group by role assignment with consideration of the busyness degrees of agents. The contribution of this paper is the formalization of the proposed problem, a practical...
Supplier selection problems have been increasingly treated as multicriteria decision problems since evaluating them must take into account several objectives. In many problems, all criteria can be treated as order-winner factors. However, in some cases, the decision maker (DM) needs to consider qualifier factors as criteria. To allow the DM to include such factors, a veto function must be included...
Today, large scale companies are receiving tens of thousands of feedback from their customers every day, which makes it impossible for them to evaluate the feedbacks manually. As sentiments expressed by the customers are vitally important for companies, an accurate and swift analysis is needed. In this paper, a hierarchical approach is proposed for sentiment analysis and further categorization of...
A paper is devoted to the management of innovative projects based on the theory of fuzzy sets. To analyze project risks based on the terms of their implementation — acceleration, according to the plan and with the delay, authors proposed to employ both the asymmetry coefficient and the coefficient of asymmetry variation which are characterizing the asymmetric distribution of costs due to changes in...
The article is devoted to the problem of making environmental management decisions that take into account the interests of the enterprise in the form of profit and the interests of society and the state, by reducing damage to the environment. The authors pay attention to the process of making environmental management decisions. Proposed algorithm for making environmental management decisions is presented...
Currently, the tasks of ensuring the quality and stability of the provided IT services are extremely topical. In the operation of the composite applications, the problem of increasing the effectiveness of incident management is a complex technical problem, the solution of which requires the use of the simulation methods. In the work, the integration platform Ensemble of InterSystems Company was considered...
This article examines the regression model of modernization of enterprises of the telecommunications industry of Russia, which is part of a system of three models: modernization of enterprises, innovation transformations and markets. The regression model is built on five parameters. The values of the parameters are taken from the State Program of the Russian Federation “Development of the Electronic...
The analysis of transport indicators of the region is carried out. The structure of the model is given. An algorithm of iterative parameters is described. General conclusions and suggestions are made. They make it possible to outline the prospects of the innovative growth by the relevant directions (power and transport complexes, social sphere, tourism and recreation, agriculture). In order to forecast...
In the present paper the issue of horizontal cooperation in a road transportation network is tackled. Different road trips belonging to a set of carriers that form a coalition are shared, with the final goal of maximizing the carriers' profit. The higher the number of carriers belonging to the coalition, the greater the possibility of obtaining profitable trip combinations; however, this makes also...
The growing importance of the online channel and the increased deployment of new technologies such as smart mobile devices and social networks create new opportunities and challenges for traditional retailers. The retailing industry is moving to a new phase, in which the distinctions between traditional and online channels disappear, namely omni-channel (OC) retailing. The new challenge is to understand...
The increase of the social welfare and the exchange of resources are the typical results obtained from regional electricity integration. However, the agents participation in the regional markets use to be through the intermediation of national operators of each country (partaker) due to the regulatory prerogatives that these operators may have. Then, oligopolistic competition could prevail in regional...
The IEC standard or the International Electrotechnical Commission is a mathematical standard in modeling inverse curve characteristic of overcurrent relay or OCR. Using the IEC standard allows for inaccurate coordination of the relay such as the intersection of the inverse curve, because this standard does not always correspond to various problems in the industry. Accordingly, in this research paper...
Anugrah Citra Boga is a food processing industry that produces meatballs as their main product. One of the problems in the company is the distribution of the products. Moreover, the distribution cost was never examined scientifically to obtain the optimal value. By simulating the distribution route to minimize the distribution time, then lower cost of the distribution will be expected. Therefore,...
The study aims to review mediating effect of store image on social responsibility and customer trust on organic products. There are 361 customers of retails in West Java Province that is reviewed by Structural Equation Model approach. The finding is found that social responsibility is unable to improve customer trust directly for organic products. However, store image can mediate the correlation of...
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