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43
Modeling the User Acceptance of EMail
 in Proceedings of the Thirtysixth Annual Hawaii International Conference on System Sciences (HICSS
, 2003
"... The Technology Acceptance Model (TAM) predicts whether users will ultimately use software applications based upon causal relationships among belief and attitudinal constructs that influence usage behavior. Electronic mail, or email, is a collaborative technology available to virtually all members of ..."
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The Technology Acceptance Model (TAM) predicts whether users will ultimately use software applications based upon causal relationships among belief and attitudinal constructs that influence usage behavior. Electronic mail, or email, is a collaborative technology available to virtually all members of an organization, and typically, there are alternative email applications available for use. This study applies TAM to assess the user acceptance and voluntary usage of a particular email application, cc:mail, in two different organizations. The results largely validate TAM, although the findings suggest that certain external variables, namely length of time since first use, and level of education, directly affect email usage behavior apart from their influence as mediated through the perceived usefulness (PU) and perceived ease of use (PEOU) constructs. 1.
Valuation of Projects and Real Options in Incomplete Markets
, 2004
"... OF LICENTIATE THESIS Department of Engineering Physics and Mathematics P.O. Box 2200, FIN02015 HUT, FINLAND Author: Janne Gustafsson Department: Department of Engineering Physics and Mathematics Major subject: Systems Analysis and Operations Research Minor subject: Strategy and International ..."
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OF LICENTIATE THESIS Department of Engineering Physics and Mathematics P.O. Box 2200, FIN02015 HUT, FINLAND Author: Janne Gustafsson Department: Department of Engineering Physics and Mathematics Major subject: Systems Analysis and Operations Research Minor subject: Strategy and International Business English title: Valuation of Projects and Real Options in Incomplete Markets Finnish title: Projektien ja reaalioptioiden arvonmritys eptydellisill markkinoilla Number of pages: 105 Chair: Mat2 Applied Mathematics Supervisor: Professor Ahti Salo Instructor: Professor Ahti Salo Abstract: This thesis presents a framework for valuing risky projects and its extension for the valuation of real options and managerial flexibility. The framework is also applied in a case where the investor's probability estimates are imprecise or unknown.
UtilityBased Categorization
, 1993
"... The ability to categorize and use concepts e#ectively is a basic requirementofany intelligent actor. The utilitybased approach to categorization is founded on the thesis that categorization is fundamentally in service of action, i.e., the choice of concepts made by an actor is critical to its choi ..."
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The ability to categorize and use concepts e#ectively is a basic requirementofany intelligent actor. The utilitybased approach to categorization is founded on the thesis that categorization is fundamentally in service of action, i.e., the choice of concepts made by an actor is critical to its choice of appropriate actions. This is in contrast to classical and similaritybased approaches which seek logical completeness in concept description with respect to sensory data rather than actionoriented e#ectiveness. Utilitybased categorization is normative and not descriptive. It prescribes howanintelligent agent ought to conceptualize to act e#ectively. It provides ideals for categorization, speci#es criteria for the design of e#ective computational agents, and provides a model of ideal competence. A decisiontheoretic framework for utilitybased categorization whichinvolves reasoning about alternative categorization models of varying levels of abstraction is proposed. Categorization mode...
StateBased Reconstructability Modeling for Decision Analysis
 In: Proceedings of World Congress of the Systems Sciences and International Society for the Systems Sciences 2000
, 2000
"... Reconstructability analysis (RA) is a method for detecting and analyzing the structure of multivariate categorical data. Jones and his colleagues extended the original variablebased formulation of RA to encompass models defined in terms of system states (Jones ..."
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Reconstructability analysis (RA) is a method for detecting and analyzing the structure of multivariate categorical data. Jones and his colleagues extended the original variablebased formulation of RA to encompass models defined in terms of system states (Jones
New Tools for Decision Analysts
"... Abstract—This paper presents psychological research that can help people make better decisions. Decision analysts typically: 1) elicit outcome probabilities; 2) assess attribute weights; and 3) suggest the option with the highest overall value. Decision analysis can be challenging because of environ ..."
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Abstract—This paper presents psychological research that can help people make better decisions. Decision analysts typically: 1) elicit outcome probabilities; 2) assess attribute weights; and 3) suggest the option with the highest overall value. Decision analysis can be challenging because of environmental and psychological issues. Fast and frugal methods such as natural frequency formats, frugal multiattribute models, and fast and frugal decision trees can address these issues. Not only are the methods fast and frugal, but they can also produce results that are surprisingly close to or even better than those obtained by more extensive analysis. Apart from raising awareness of these findings among engineers, the authors also call for further research on the application of fast and frugal methods to decision analysis. Index Terms—Adaptive decision making, decision analysis, fast and frugal heuristics, fast and frugal trees, natural frequency formats. I.
Framework for Measuring Rationale Clarity of AEC Design Decisions
, 2008
"... Current Architecture, Engineering, and Construction (AEC) design processes rely on precedent to resolve complex decisions. However, changing stakeholder concerns, design methods, and building products negate much of this precedent knowledge. Project teams need to clearly communicate their decision r ..."
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Current Architecture, Engineering, and Construction (AEC) design processes rely on precedent to resolve complex decisions. However, changing stakeholder concerns, design methods, and building products negate much of this precedent knowledge. Project teams need to clearly communicate their decision rationale in order to develop consensus about design decisions. The AEC industry requires a new framework to evaluate decision making. This paper builds on a broad range of theory including DecisionBased Design, Decision Analysis, Decision Theory, linguistics, logic, organization theory, and social welfare. First, this paper describes rationale as a set of assertions regarding distinct components (i.e. managers, stakeholders, designers, gatekeepers, objectives, constraints, options, and analysis) that support design decisions. Second, this paper describes conditions of clarity (i.e. coherent, concrete, connected, consistent, convincing, certain, and correct). These are used to measure the clarity of assertions, components, and the rationale as a whole. Taken together, this Rationale Clarity Framework (RCF) enables an objective evaluation of existing decision support methods. RCF provides a broad yet structured view for assessing process, organization, and product performance and for assessing AEC industry dynamics.
Sensitivity analysis in decision circuits
"... Decision circuits have been developed to perform efficient evaluation of influence diagrams [Bhattacharjya and Shachter, 2007], building on the advances in arithmetic circuits for belief network inference [Darwiche, 2003]. In the process of model building and analysis, we perform sensitivity analysi ..."
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Decision circuits have been developed to perform efficient evaluation of influence diagrams [Bhattacharjya and Shachter, 2007], building on the advances in arithmetic circuits for belief network inference [Darwiche, 2003]. In the process of model building and analysis, we perform sensitivity analysis to understand how the optimal solution changes in response to changes in the model. When sequential decision problems under uncertainty are represented as decision circuits, we can exploit the efficient solution process embodied in the decision circuit and the wealth of derivative information available to compute the value of information for the uncertainties in the problem and the effects of changes to model parameters on the value and the optimal strategy. 1
Utilityprobability duality
, 2004
"... This paper introduces duality between probability distributions and utility functions. The primal problem is to maximize the expected utility over a set of probability distributions. To develop the dual problem, we scale the utility function between zero and one, so that it obeys the same mathematic ..."
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This paper introduces duality between probability distributions and utility functions. The primal problem is to maximize the expected utility over a set of probability distributions. To develop the dual problem, we scale the utility function between zero and one, so that it obeys the same mathematical properties as a (cumulative) probability function. We show that reversing the roles of the two functions in the expected utility formulation provides a natural “dual ” problem. Many of the known results for the primal problem can be reinterpreted in the dual problem. For example, we introduce a new quantity, the aspiration equivalent, as the “dual ” of the certain equivalent. The aspiration equivalent provides a new method for choosing between lotteries and a winwin situation for principalagent delegation when used as a target. We also show several new dual results such as utility dominance relationships as dual to stochastic dominance relationships and introduce a new saddlepoint method for allocating lotteries to decision makers. Key words: utility, probability, duality, aspiration equivalent, and utility dominance. Page 1 © 2003 Utility Probability Duality 102703.doc 1 – Introduction to duality
Bayesian Networks with Degenerate Gaussian Distributions
 Methodology and Computing in Applied Probability
, 2001
"... Bayesian networks compute marginal distributions through the "message passing" algorithm  a series of local calculations involving neighboring cliques of variables in a clique tree. In this work, these message passing computations are extended to the case of degenerate Gaussian potentials which a ..."
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Bayesian networks compute marginal distributions through the "message passing" algorithm  a series of local calculations involving neighboring cliques of variables in a clique tree. In this work, these message passing computations are extended to the case of degenerate Gaussian potentials which are multivariate Gaussian densities that can have two different kinds of degeneracies corresponding to projections with zero variance and projections with infinite variance. The basic operations of the message passing algorithm, such as representing conditional distributions, extending potentials, and conditioning on observations, create or operate on potentials with various kinds of degeneracies thereby demonstrating the need for such methodology. Computer implementation of this scheme follows easily from the details within and some computational aspects are discussed. We also demonstrate an application of our methodology to automatic musical accompaniment.
Three new sensitivity analysis methods for influence diagrams
 In Proc. of 26th UAI
, 2010
"... Performing sensitivity analysis for influence diagrams using the decision circuit framework is particularly convenient, since the partial derivatives with respect to every parameter are readily available [Bhattacharjya and Shachter, 2007; 2008]. In this paper we present three nonlinear sensitivity ..."
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Performing sensitivity analysis for influence diagrams using the decision circuit framework is particularly convenient, since the partial derivatives with respect to every parameter are readily available [Bhattacharjya and Shachter, 2007; 2008]. In this paper we present three nonlinear sensitivity analysis methods that utilize this partial derivative information and therefore do not require reevaluating the decision situation multiple times. Specifically, we show how to efficiently compare strategies in decision situations, perform sensitivity to risk aversion and compute the value of perfect hedging [Seyller, 2008]. 1