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Given its essential role in understanding, explaining and structuring digital innovation, we see the increased prevalence of the business model concept as a unit of analysis in IS research. In contemporary, fast-paced markets, business models are volatile in nature and should be continuously innovated to accommodate new customer needs and technology developments. Business model innovation can be considered as an iterative process to guide business models from ideation towards implementation, in which the proper evaluation of business model prototypes is essential. For this evaluation, we need normative guidance, tools and rules to understand the relative performance of a new business model design. In the early design phases, this implies dealing with high levels of uncertainty. A few techniques and methods have been proposed for this purpose, but these lack the formal basis required for systematical application and development of automated evaluation tools. As a novel approach, we have earlier proposed the application of linguistic summarization to support early-phase, soft-quantitative business model evaluation. In this paper, we focus on a structural formalization of this approach as the basis for the development of well-defined user guidelines and automated evaluation tools. In doing so, we bridge the existing gap between qualitative and quantitative business model evaluation. We demonstrate the formalization by means of a running case inspired by a real-world project in the highly dynamic urban mobility domain.
Rick Gilsing; Anna Wilbik; Paul Grefen; Oktay Turetken; Baris Ozkan. A Formal Basis for Business Model Evaluation with Linguistic Summaries. Business Information Systems 2020, 428 -442.
AMA StyleRick Gilsing, Anna Wilbik, Paul Grefen, Oktay Turetken, Baris Ozkan. A Formal Basis for Business Model Evaluation with Linguistic Summaries. Business Information Systems. 2020; ():428-442.
Chicago/Turabian StyleRick Gilsing; Anna Wilbik; Paul Grefen; Oktay Turetken; Baris Ozkan. 2020. "A Formal Basis for Business Model Evaluation with Linguistic Summaries." Business Information Systems , no. : 428-442.
In this study, we detected which means of transportation is beneficial from a travel time perspective in specific districts of Warsaw, Poland. To achieve this goal, we proposed a framework to perform a spatial analysis to describe the as-is situation in the city (the state that the situation is in at the present time). The framework contains the following elements: attractiveness analysis, travel time and speed analysis, and potential accessibility analysis. The relationship between the averaged nominal travel speed and the number of residents was also investigated. We used data from a journey planner, as well as land use and population statistics, and employed descriptive analytics. The results are presented as maps of travel times, travel speed, and potential accessibility, as well as scatter plots of dependencies between travel speed and number of residents. Unfortunately, public transportation ranks behind car and bike transport in terms of travel time, speed, and potential accessibility. The largest positive influence on effectiveness of traveling by public transportation is the metro and railway system; also, bikes can perfectly complement the public transportation system. The obtained results can be used to indicate directions of changes in the transportation system of Warsaw.
Albina Mościcka; Krzysztof Pokonieczny; Anna Wilbik; Jakub Wabiński. Transport Accessibility of Warsaw: A Case Study. Sustainability 2019, 11, 5536 .
AMA StyleAlbina Mościcka, Krzysztof Pokonieczny, Anna Wilbik, Jakub Wabiński. Transport Accessibility of Warsaw: A Case Study. Sustainability. 2019; 11 (19):5536.
Chicago/Turabian StyleAlbina Mościcka; Krzysztof Pokonieczny; Anna Wilbik; Jakub Wabiński. 2019. "Transport Accessibility of Warsaw: A Case Study." Sustainability 11, no. 19: 5536.
Nowadays the amount of data that is collected in various settings is growing rapidly. These elaborate data records enable the training of machine learning models that can be used to extract insights and for making better informed decisions. When doing the data mining task, on one hand, feature selection is often used to reduce the dimensionality of the data. On the other hand, we need to decide the structure (parameters) of the model when building the model. However, feature selection and the parameters of the model may interact and affect the performance of the model. Therefore, it is difficult to decide the optimal parameter and the optimal feature subset without an exhaustive search of all the combination of the parameters and the feature subsets which is time-consuming. In this paper, we study how the interaction between feature selection and the parameters of a model affect the performance of the model through experiments on four data sets.
Peipei Chen; Caro Fuchs; Anna Wilbik; Tak-Ming Chan; Saskia Van Loon; Arjen-Kars Boer; Xudong Lu; Volkher Scharnhorst; Uzay Kaymak. On the Interaction Between Feature Selection and Parameter Determination in Fuzzy Modelling. Communications in Computer and Information Science 2018, 150 -161.
AMA StylePeipei Chen, Caro Fuchs, Anna Wilbik, Tak-Ming Chan, Saskia Van Loon, Arjen-Kars Boer, Xudong Lu, Volkher Scharnhorst, Uzay Kaymak. On the Interaction Between Feature Selection and Parameter Determination in Fuzzy Modelling. Communications in Computer and Information Science. 2018; ():150-161.
Chicago/Turabian StylePeipei Chen; Caro Fuchs; Anna Wilbik; Tak-Ming Chan; Saskia Van Loon; Arjen-Kars Boer; Xudong Lu; Volkher Scharnhorst; Uzay Kaymak. 2018. "On the Interaction Between Feature Selection and Parameter Determination in Fuzzy Modelling." Communications in Computer and Information Science , no. : 150-161.
Clinical protocols are introduced in hospitals to standardize the care delivery process. Compliance is a measure used to determine whether the protocol has been followed. However, so far an activity in the protocol could be either compliant or non-compliant. In this paper we consider the compliance of a single activity as a fuzzy term. We propose to define the rules which can assess the compliance degree of an activity. We proposed the fuzzy compliance measure of clinical protocol that aggregates those compliance degrees. We demonstrate a case of glucose management protocol at Intensive Care Unit (ICU). Initial results are promising.
Anna Wilbik; Ivo Kuiper; Walther Van Mook; Dennis Bergmans; Serge Heines; Irene Vanderfeesten. On Fuzzy Compliance for Clinical Protocols. Communications in Computer and Information Science 2018, 404 -413.
AMA StyleAnna Wilbik, Ivo Kuiper, Walther Van Mook, Dennis Bergmans, Serge Heines, Irene Vanderfeesten. On Fuzzy Compliance for Clinical Protocols. Communications in Computer and Information Science. 2018; ():404-413.
Chicago/Turabian StyleAnna Wilbik; Ivo Kuiper; Walther Van Mook; Dennis Bergmans; Serge Heines; Irene Vanderfeesten. 2018. "On Fuzzy Compliance for Clinical Protocols." Communications in Computer and Information Science , no. : 404-413.
Blood vitamin B12 levels are not representative for actual vitamin B12 status in tissue. Instead plasma methylmalonic acid (MMA) levels can be measured because MMA concentrations increase relatively early in the course of vitamin B12 deficiency. However, MMA levels in plasma may also be increased due to renal failure. In this paper we estimate the influence of the kidney function on MMA levels in plasma by using fuzzy inference systems. Using this method diagnosing vitamin B12 deficiencies could be improved when kidney failure is present.
Anna Wilbik; Saskia Van Loon; Arjen-Kars Boer; Uzay Kaymak; Volkher Scharnhorst. Fuzzy Modeling for Vitamin B12 Deficiency. Communications in Computer and Information Science 2016, 462 -471.
AMA StyleAnna Wilbik, Saskia Van Loon, Arjen-Kars Boer, Uzay Kaymak, Volkher Scharnhorst. Fuzzy Modeling for Vitamin B12 Deficiency. Communications in Computer and Information Science. 2016; ():462-471.
Chicago/Turabian StyleAnna Wilbik; Saskia Van Loon; Arjen-Kars Boer; Uzay Kaymak; Volkher Scharnhorst. 2016. "Fuzzy Modeling for Vitamin B12 Deficiency." Communications in Computer and Information Science , no. : 462-471.
In this paper we investigate linguistic summaries of the form “Q y’s are P”. We consider a case with non-monotonic quantifier, exemplified by a few or about a half. We propose a method for evaluating the truth value of such summaries.
Anna Wilbik; Uzay Kaymak; James M. Keller; Mihail Popescu. Evaluation of the Truth Value of Linguistic Summaries – Case with Non-monotonic Quantifiers. Advances in Intelligent Systems and Computing 2015, 322, 69 -79.
AMA StyleAnna Wilbik, Uzay Kaymak, James M. Keller, Mihail Popescu. Evaluation of the Truth Value of Linguistic Summaries – Case with Non-monotonic Quantifiers. Advances in Intelligent Systems and Computing. 2015; 322 ():69-79.
Chicago/Turabian StyleAnna Wilbik; Uzay Kaymak; James M. Keller; Mihail Popescu. 2015. "Evaluation of the Truth Value of Linguistic Summaries – Case with Non-monotonic Quantifiers." Advances in Intelligent Systems and Computing 322, no. : 69-79.
In this paper we propose a new type of protoform-based linguistic summary – the gradual summary. This new type of summaries aims in capturing the change over some time span. Such summaries can be useful in many domains, for instance in economics, e.g., “prices of X are getting smaller”, in eldercare, e.g., “resident Y is getting less active”, in managing production, e.g. “production is dropping” or “delays in deliveries are getting smaller”.
Anna Wilbik; Uzay Kaymak. Gradual Linguistic Summaries. Communications in Computer and Information Science 2014, 405 -413.
AMA StyleAnna Wilbik, Uzay Kaymak. Gradual Linguistic Summaries. Communications in Computer and Information Science. 2014; ():405-413.
Chicago/Turabian StyleAnna Wilbik; Uzay Kaymak. 2014. "Gradual Linguistic Summaries." Communications in Computer and Information Science , no. : 405-413.