scholarly journals Are you a good borrower? Mining interpretable pattern structures in credit scoring

2020 ◽  
Vol 4 (3) ◽  
pp. 67-85
Author(s):  
Sergei O. Kuznetsov ◽  
Alexey Masyutin ◽  
Aleksandr Ageev
Keyword(s):  
Binary Data ◽  
Regression Models ◽  
Design Methodology ◽  
Credit Scoring ◽  
Black Box ◽  
Original Research ◽  
Content Type ◽  
Pattern Structures ◽  
Classification And Regression ◽  
The Cost

Purpose The purpose of this study is to show that closure-based classification and regression models provide both high accuracy and interpretability. Design/methodology/approach Pattern structures allow one to approach the knowledge extraction problem in case of partially ordered descriptions. They provide a way to apply techniques based on closed descriptions to non-binary data. To provide scalability of the approach, the author introduced a lazy (query-based) classification algorithm. Findings The experiments support the hypothesis that closure-based classification and regression allow one to both achieve higher accuracy in scoring models as compared to results obtained with classical banking models and retain interpretability of model results, whereas black-box methods grant better accuracy for the cost of losing interpretability. Originality/value This is an original research showing the advantage of closure-based classification and regression models in the banking sphere.

Autopilot design for an aircraft by using Luenberger observer design

2018 ◽  
Vol 90 (5) ◽  
pp. 858-868 ◽  
Author(s):  
Muhammad Taimoor ◽  
Li Aijun ◽  
Rooh ul Amin ◽  
Hongshi Lu
Keyword(s):  
Design Methodology ◽  
Research Work ◽  
Linear Quadratic Regulator ◽  
Observer Design ◽  
Linear Quadratic ◽  
Content Type ◽  
Luenberger Observer ◽  
Level Flight ◽  
Aerial Vehicle ◽  
The Cost

Purpose The purpose of this paper is to design linear quadratic regulator (LQR) based Luenberger observer for the estimation of unknown states of aircraft. Design/methodology/approach In this paper, the LQR-based Luenberger observer is deliberated for autonomous level flight of unmanned aerial vehicle (UAV) which has been attained productively. Various modes like phugoid and roll modes are exploited for controlling the rates of UAV. The Luenberger observer is exploited for estimation of the mysterious states of the system. The rates of roll, yaw and pitch are used as an input to the observer, while the remaining states such as velocities and angles have been anticipated. The main advantage of using Luenberger observer was to reduce the cost of the system which has been achieved lucratively. The Luenberger observer proposes sturdiness at the rate of completion to conquest over the turmoil and insecurities to overcome the privileged recital. The FlightGear simulator is exploited for the endorsement of the recital of the Luenberger observer-based autopilot. The level flight has been subjugated lucratively and has been legitimated by exploiting the FlightGear simulator. The authenticated and the validated results are offered in this paper. Microsoft Visual Studio has been engaged as a medium between the MATLAB and FlightGear Simulator. Findings The suggested observer based on LQR ensures the lucrative approximation of the unknown states of the system as well as the successful level flight of the system. The Luenberger observer is used for approximation of states while LQR is used as controller. Originality/value In this research work, not only the estimation of unknown states of both longitudinal and lateral model is made but also the level flight is achieved by using those estimated states and the autopilot is validated by using the FlightGear, while in most of the research work only the estimation is made of only longitudinal or lateral model.

Factors explaining a cost-based pricing essence

2019 ◽  
Vol 34 (8) ◽  
pp. 1850-1865
Author(s):  
Juliana Ventura Amaral ◽  
Reinaldo Guerreiro
Keyword(s):  
Design Methodology ◽  
Empirical Studies ◽  
Pricing Strategy ◽  
Company Size ◽  
Price Setting ◽  
Marketing Theory ◽  
Content Type ◽  
Industrial Companies ◽  
Five Factors ◽  
The Cost

Purpose Empirical studies have found that cost-based pricing remains dominant in pricing practice and suggest that practice conflicts with marketing theory, which recommends value-based prices. However, empirical studies have yet to examine whether cost-plus formulas represent the pricing approach or essence. Design/methodology/approach This study aims to address the factors that explain price setting whereby the cost-plus formula is not just the pricing approach but also the pricing essence. This examination is grounded in a survey conducted on 380 Brazilian industrial companies. Findings The results show that, for price-makers, the cost-based pricing essence is positively associated with four factors (two obstacles to deploying value-based pricing, company size and differentiation), but it is negatively related to one factor (premium pricing strategy). For price-takers, the cost-based pricing essence is positively associated with four factors (two obstacles to deploying value-based pricing, coercive isomorphism and use of full costs), but it is negatively related to five factors (one obstacle to deploying value-based pricing, company size, competitors’ ability to copy, normative isomorphism and experience). Originality/value The key contribution of this paper is demonstrating that cost-plus formulas do not go against the incorporation of competitors and value information. This study reveals that it is possible to set prices based on either value or competitors’ prices while simultaneously preserving the simplicity of the cost-plus formulas. Via the margin, firms may connect costs to information about competition and value. The authors also demonstrate the drawbacks of not segregating companies into price-makers and price-takers and an excessive focus on the pricing approach at the expense of pricing essence.

Application for online conferences and meetings

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Mochammad Rifai ◽  
Devi Fitrianah
Keyword(s):  
Software Development ◽  
Web Application ◽  
Design Methodology ◽  
Black Box ◽  
Process Validation ◽  
Content Type ◽  
Registration Process ◽  
Testing Method ◽  
Black Box Testing ◽  
The Web

Purpose This study aims to support an institution to hold an online meeting or conference in the middle of social distancing, which is currently in effect. Design/methodology/approach In developing this application, rapid application design methodology is used. The implementation used HTML5 and PHP for the Web and MySQL for the database and Agora Software Development Kit. To evaluate the application, the authors had a black box testing method. Findings This application will support the participant registration process, validation, payment, providing a link to the workshop to the participant, token and room name to be able to join an online meeting or conference up to the process of giving a digital attendance certificate to participants or members participating in it. Originality/value An integrated Web application provides full services, starting from the registration process, payment, the conference meeting itself and certificate of attendance.

scholarly journals Factors associated with the recurrence of dengue fever in villages in Chiang Rai, Thailand

2019 ◽  
Vol 33 (6) ◽  
pp. 438-449 ◽  
Author(s):  
Som Mungmonphoncharoen ◽  
Tawatchai Apidechkul ◽  
Pannipha Dokmaingam
Keyword(s):  
Design Methodology ◽  
Case Control Study ◽  
Original Research ◽  
Content Type ◽  
Factors Associated ◽  
Research Article ◽  
Validated Questionnaire ◽  
One Year ◽  
The Village ◽  
Control Study

Purpose The purpose of this paper is to determine the factors associated with DF occurrence in recurrence villages in Chiang Rai, Thailand. Design/methodology/approach A case-control study was conducted between June 2017 and December 2017. A validated questionnaire was used to detect the factors associated with recurrence of DF. χ2 and logistic regression were used to detect the associations between variables at α=0.05. Findings In total, 213 cases and 436 controls were recruited into the analysis. Cases were recruited from 20 DF recurring villages, while controls were recruited from 20 non-DF recurring villages in Chiang Rai province. At community level, three variables were associated with recurrence of DF; size of the village (p=0.007), number of villagers (p=0.009), tribe (p=0.043) and distance to a hospital (p=0.003). Three variables were associated with DF at personal and family levels in multivariate model: children whose parents worked as daily employees, and government officers and traders were more likely to have DF 1.56 (95%CI=1.22–2.48) and 4.31 (95%CI=4.66–9.38) times greater than of those whose parents’ worked as agriculturists, respectively; children aged less than one year were 2.89 (95%CI=2.17–4.33) times more likely to have DF than those aged=6 and children who were under standard growth and over standard growth were more likely to have DF than those standard growth 1.61 (95%CI=1.18–2.53) and 7.33 (95%CI=4.39–10.37) times, respectively. Originality/value This is the original research article which was conducted in detecting the factors associated with recurrence of DHF in Northern Thailand.

Ramadan’s impact on the optimism of analysts’ recommendations

2019 ◽  
Vol 12 (5) ◽  
pp. 727-742
Author(s):  
Harit Satt ◽  
Sarah Nechbaoui ◽  
M. Kabir Hassan ◽  
Selma Izadi
Keyword(s):  
Population Growth ◽  
Multivariate Regression ◽  
Regression Models ◽  
Design Methodology ◽  
Stock Exchanges ◽  
Information Uncertainty ◽  
Mena Region ◽  
World Religions ◽  
Content Type ◽  
The Impact

Purpose This paper aims to document the impact of Ramadan on the optimism of analysts’ recommendations taking as a sample the countries of the MENA region during the period between 2004 and 2015. The choice of these countries can be explained by the fact that their population is predominantly of a Muslim faith (The Future of World Religions: Population Growth Projections, 2010-2050, 2015). Design/methodology/approach The authors used univariate and multivariate regression models to highlight the existence of the Ramadan effect on the optimism of analysts. They have found that pre-holiday optimism is significantly lower than post-holiday optimism. Findings This paper also documented the effect of analysts’ experience and information uncertainty on the analysts’ optimism level that allowed us to infer that low experience enhances optimism, while environment with low information uncertainty tends to decrease the level of optimism. Originality/value Previous research on this topic has investigated the effect of months of the year, turns of the month and days-of-the-week on the behavior of stock exchanges. Another strand of the literature also analyzed the effect of holidays on the latter. However, this is the first attempt to investigate this effect on analysts’ recommendations optimism when the holiday period is related to Islam.

Stigmatized products: how conflicting laws can influence decisions to proceed

2020 ◽  
Vol 42 (1) ◽  
pp. 41-49
Author(s):  
Stephanie Geiger-Oneto ◽  
Betsy D. Gelb ◽  
Travis Simkins
Keyword(s):  
Design Methodology ◽  
State Legislatures ◽  
Strategic Decisions ◽  
Content Type ◽  
State Laws ◽  
Product Categories ◽  
Plastic Bags ◽  
Single Use ◽  
The Cost ◽  
Different Levels

Purpose The purpose of this paper is to offers the authors’ perspective on a problem rarely considered by those making strategic decisions: conflicting laws at different levels of jurisdiction, specifically those related to stigmatized products. Design/methodology/approach The authors use as examples of product categories from marijuana to single-use plastic bags, describing the conflicting laws that add to costs for marketers and consumers. Findings The authors find that conflicting laws add to the uncertainty, legal expenses, and therefore, the cost of marketing a stigmatized product, whether stigmatized because of its impact on the environment, on health or on moral grounds. Research limitations/implications The examples are not exhaustive, but their implications are significant: that as state legislatures are preempting local bans, Congress may preempt state laws. Originality/value This paper adds one more complexity to decision-making in the area of products to offer and/or merger/acquisition decisions that may bring company products that face conflicting laws.

The leadership journey Antony Sheehan

2014 ◽  
Vol 10 (1) ◽  
pp. 52-56
Author(s):  
Antony Sheehan
Keyword(s):  
National Health Service ◽  
Design Methodology ◽  
Health Management ◽  
Church Health ◽  
Original Research ◽  
Content Type ◽  
Management Priorities ◽  
Management Career ◽  
The Church ◽  
Practical Implications

Purpose – The purpose of this paper is to trace the health management career of Antony Sheehan, a former executive in England's National Health Service and now president of the Church Health Center in Memphis, TN, and reveals principles that guide his management priorities. Design/methodology/approach – The approach is reflective, reading-based, and anecdotal. Findings – Three leadership priorities emerge: liberating talent, profound belief in knowledge, and purpose beyond self, all three being mediated by respect. Research limitations/implications – The narrative is not based on clinical research, but specific experience of the author. Practical implications – Readers may find inspiration to examine the principles that guide their own leadership efforts. Originality/value – Based in the author's own experience, the paper does not represent original research.

“Are you crewed up with that bird from the uni?” the complexities of conducting ethnographic research in policing

2020 ◽  
Vol 9 (3) ◽  
pp. 365-377
Author(s):  
Claudia Emeline Cox
Keyword(s):  
Police Officers ◽  
Design Methodology ◽  
Moral Dilemmas ◽  
Young Female ◽  
Original Research ◽  
Ethnographic Research ◽  
Content Type ◽  
Conducting Research ◽  
Researcher Identity ◽  
Female Researcher

PurposeThe purpose of this paper is to provide some initial reflections on the complexities and challenges faced when conducting observations with police officers working in response and neighbourhood policing roles from the perspective of a young, female, researcher.Design/methodology/approachThe research consisted of 200 hours spent with operational police officers in a medium sized UK police force, predominantly in 3 cities, to explore the realities of frontline policing and policy implementation. This paper offers a reflexive account of conducting the research, as opposed to a discussion of the findings which align to the original research aim.FindingsConducting this fieldwork highlighted a number of complexities arising as a result of conducting ethnographic research in policing. This paper is concerned with the constructing of a researcher identity and navigating moral dilemmas based on the culture and use of language observed.Originality/valueWhilst this will be of interest to those engaged with similar policing research, such findings are also likely to apply to those conducting ethnography where there is conflict between their insider/outsider status, the potential for internalised moral debates and women conducting research in male-dominated settings.

Strengthening the contribution of scholarship to equity in practice for entrepreneurs and entrepreneurship

2020 ◽  
Vol 12 (1) ◽  
pp. 103-115
Author(s):  
Teresa Nelson
Keyword(s):  
Gender Equity ◽  
Social Action ◽  
Design Methodology ◽  
Academic Research ◽  
Gender Construction ◽  
Original Research ◽  
Content Type ◽  
Public Spheres ◽  
Entrepreneurship Research ◽  
Reflective Essay

Purpose This paper aims to discuss the ways to strengthen the contribution of scholarship to gender equity in practice for entrepreneurs and entrepreneurship. Research that spotlights gender construction and enactment, including its origins and its discriminatory effects on people, is inherently social action to the degree that it motivates institutional change. For this 10th year recognition of the founding of the International Journal of Gender and Entrepreneurship, the four waves of feminism framework is used to consider our conceptual domain and select practitioners in the gender × entrepreneurship field are interviewed for input on-field needs. Findings are that academics can boost equity in practice by doing original research and promoting research that is more representative, sharing specialized scholarship skills in activist arenas, making the results of academic research available to practitioners and policymakers, and reviewing and validating (or discrediting) information circulating in public spheres. Design/methodology/approach This reflective essay is designed to consider the relevance of scholarship in gender and entrepreneurship to practitioners who participate in the entrepreneurship ecosystem. The concept of the temporal waves of feminism, plus interviews with international practitioners, are used to inform the issues. Findings Findings are that academics can boost equity in practice by doing original research and promoting research that is more representative, sharing specialized scholarship skills in activist arenas, making the results of academic research available to practitioners and policymakers, and reviewing and validating (or discrediting) information circulating in public spheres. Originality/value Scholars of gender and entrepreneurship can look for and create access and meaning for their work with and for practitioners. Bridges to scholarship on gender (e.g. in psychology, anthropology, gender studies, social psychology) can be built to stay current and effective.

A deterministic inventory model in reverse supply chain

2019 ◽  
Vol 15 (1) ◽  
pp. 318-338 ◽  
Author(s):  
Sasmita Mohapatra ◽  
Ajay Kumar Behera ◽  
Rabindra Mahapatra ◽  
Harish Das
Keyword(s):  
Design Methodology ◽  
Current Model ◽  
Environmental Damage ◽  
Reverse Supply Chain ◽  
Retail Outlet ◽  
Present Value ◽  
Content Type ◽  
Unique Model ◽  
The Cost ◽  
The Mathematical Model

Purpose The purpose of this paper is to present a unique model for the production–recycling–reuse of aluminium refreshment cans. It is presumed that disposed-off 250-ml aluminium cans are collected from the retail outlet. The cans are thereafter arranged into non-tainted and tainted categories. Design/methodology/approach The current model considers all the factors, i.e. producing, recycling and remanufacturing, whereas the previous models provide emphasis only one factor. Six procedures were considered in the improvement of the mathematical model. Findings In this paper, a recycling–reuse model that remanufactures non-tainted aluminium beverage cans and uses regrind from damaged non-tainted aluminium beverage cans mixed with parent aluminium material in the production of new cans was developed and analysed to reduce the amount of aluminium beverage cans that are disposed off in a scrapyard. The model is assumed to have no shortcomings, and the different percentages regarding the classes of cans are taken to be deterministic. Originality/value The model incorporates several unique aspects, including accounting for the cost of land use and associated environmental damage through the calculation of a present value that is charged to the manufacturer.

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