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In this paper, we attempt at providing a new formalization of gradual patterns based on fuzzy sets. In fact, in the last few years and over the last decade, the extraction of gradual patterns grasped the interest of the data mining community and several approaches were proposed to deal with such patterns. Gradual patterns of the form “The more/less A, the more/less B” express the co-variation between...
Currently universities have faced a popular realistic subject, that is, how to construct a reasonable salary incentive mechanism based on two tasks of teaching and scientific research for teachers. This paper builds a multi-task principal-agent model based on those tasks which are delegated to teachers by universities. Then, through in-depth analysis of the model, we explore the relationships among...
The Excel spreadsheet built-in a lot of function, is widely applied in the actual work area, such as accounting, financial management. This paper introduces two commonly used Excel function: the IF function and VLOOKUP function, and use these functions to solve the actual financial problems. Using the If function, for example, the seven layers of nested solved the problem of calculation of individual...
Information sets expand the scope of the existing uncertainty theories by representing uncertainty in the information sources. An information set takes into account both the information source values as well as the membership grades. In this study, we investigate in detail the properties of the information sets. The information measures for the information sets are also developed to measure the information...
Continuously Evolving XML(CEXML) documents are important for representing constantly-changing information in a number of emerging domains such as software configuration management and geographical information systems. CEXML document consists of multiple versions of an XML document as it evolves over time. Evaluating XPath expressions in large CEXML repositories is inherently challenging because of...
Equity compensation provides incentives for executives to remain with the firm to avoid forfeiture of restricted shares and some or all of the value of stock options held, and there is a rapid growth of researches on CEO equity compensation. This paper reviewed relevant literature at home and abroad, and analysed the influencing factors of equity incentives and the impact of equity compensation on...
Based on a sample of 218 first-line service staffs from hotel industry, this study explored the dimensions of Internal Service Quality (ISQ) and examined their relationships with employee work satisfaction, organizational commitment and work engagement. Results showed that the ISQ contains of two dimensions, namely environment quality and interactive quality. Environment quality had significant and...
The Object Oriented (OO) paradigm has wide acceptance among application developers while Relational Databases (RDB) are commonly used by most organizations, but the two model systems, OO and RDB, are incompatible. Developers of database applications often face the problem of an inherent mismatch between the two models. This paper proposes integrating OO and RDB models into a unifying conceptual model...
This paper presents a new workforce allocation optimization model for project scheduling problems with multi-skilled workforce constraints (PSPMSWC), under uncertainty about the projects. The model is a mixed-integer program(MIP) model that aims at maximizing the total profit. As a subproblem, scheduling and staff assignment for projects must also be optimized. In the experiment, projects are selected...
It's not surprising that when most employees hear the term "compensation" they typically think of the money that they receive in their paycheck. Total compensation, however, extends beyond salary. Total compensation may be defined as "the package of quantifiable rewards that an employee receives for his or her labors." (Gomez-Mejia et. al, 2012, pg. 312) It is the resources that...
Universities are under increasing pressure to decrease operation costs to reduce increasing tuition and to maintain or improve enrollment rates. These two conflicting pressures come to a head with the University Admissions Department, which must meet target enrollment rates within their budget. The admissions department at George Mason University must currently hire outside application readers in...
Negotiation always plays an important role in multiagent system research. How to establish an effective negotiation model to improve the ability of negotiation of the agent is one of problems solved in multi-agent system. Based on answer set programs, this paper presents a new method about how to express the negotiation demands and how to establish answer set program of negotiation, and puts forward...
In declarative data cleaning, data semantics are encoded as constraints and errors arise when the data violates the constraints. Various forms of statistical and logical inference can be used to reason about and repair inconsistencies (errors) in data. Recently, unified approaches that repair both errors in data and errors in semantics (the constraints) have been proposed. However, both data-only...
Integrity constraints (ICs) are valuables tools for enforcing correct application semantics. However, manually designing ICs require experts and time, hence the need for automatic discovery. Previous automatic ICs discovery suffer from (1) limited ICs language expressiveness; and (2) time-consuming manual verification of discovered ICs. We introduce RULEMINER, a system for discovering data quality...
In this paper we present a novel technique called iDMI that imputes missing values of a data set by combining a decision tree algorithm (DT) and an expectation-maximization (EMI) algorithm. We first divide a data set into horizontal segments through applying a DT algorithm such as C4.5, and then apply an EMI algorithm on each segment in order to impute the missing values belong to the segment. If...
User Scenarios have been advocated as an effective means to capture requirements by describing the system-to-be at the instance or example level. This instance-level information is then used to infer a possible software specification consistent with the provided valid and invalid scenarios. So far existing approaches have often focused on the generation of static models but have omitted the inference...
Small to medium sized business enterprises (SMEs) generally thrive because they have successfully done something unique within a niche market. For this reason, SMEs may seek to protect their competitive advantage by avoiding any standardization encouraged by the use of packaged software (PS). Packaged software implementation at SMEs therefore presents challenges relating to how best to respond to...
Motivation is an important factor in reasoning about rational behavior of intelligent agents and analyzing the property of social network circles. Recent study on motivational agent paid their main attention on the mechanism of reasoning and multi-agent Cooperation. How motivation affects the internal structure of the allied agent groups are less considered. This paper proposes a methodology for motivational...
Functional dependencies (FD) model constraints over databases like "employees with the same role get the same salary". Some extensions have been introduced to represent temporal constraints: temporal functional dependencies (TFD) represent constraints like "for any given month, employees with the same role have the same salary, but their salary may change from one month to the next...
Discovering causal relationships is the ultimate goal of many scientific explorations. Causal relationships can be identified with controlled experiments, but such experiments are often very expensive and sometimes impossible to conduct. On the other hand, the collection of observational data has increased dramatically in recent decades. Therefore it is desirable to find causal relationships from...
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