نتایج جستجو برای: data transformation

تعداد نتایج: 2586681  

2015
Jeffrey Heer Joseph M. Hellerstein Sean Kandel

The human work involved in data transformation represents a major bottleneck for today’s data-driven organizations. In response, we present Predictive Interaction, a framework for interactive systems that shifts the burden of technical specification from users to algorithms, while preserving human guidance and expressive power.

2016
Paul Klint Tijs van der Storm

Mainstream model transformation tools operate on graph structured models which are described by class-based meta-models. In the traditional grammarware space, transformation tools consume and produce tree structured terms, which are described by some kind of algebraic datatype or grammar. In this paper we explore a functional style of model transformation using Rascal, a meta-programming langua...

The empirical data show a fundamental transformation in the fabric of the Iranian society in recent decades. The essence of this transformation is what we have called the “decline of community’, also labelled as the ‘depletion of social capital’, referring to the loss of social ties and the erosion of moral life which hold members of society together. In this article, drawing on a large volume ...

Journal: :Fundam. Inform. 2005
Ionut Popa

In this paper we present a new simple method to rewrite a given input string into another one which can be efficiently compressed (in some cases) by traditional compression methods. Key-Words:Data compression, Reversible transformation

1994
Thong H. Phan Ian H. Witten

Function discovery is the problem of nding a symbolic formula for a function f : D1!D2 from a set of examples f(x; y) j y = f(x)g D1 D2. Acceptable solutions are restricted to formulas expressible in some given description language L. In most previous discovery systems|for example, Bacon [4], Abacus [1], Coper [2], Fahrenheit [3] and IDS [5]|the description language is restricted to contain onl...

2015
Naveen Ashish Arthur W. Toga

This paper presents a system for declaratively transforming medical subjects' data into a common data model representation. Our work is part of the "GAAIN" project on Alzheimer's disease data federation across multiple data providers. We present a general purpose data transformation system that we have developed by leveraging the existing state-of-the-art in data integration and query rewriting...

Journal: :EURASIA Journal of Mathematics, Science and Technology Education 2017

S. Ziari

Jahanshahloo et al. (Appl Math Comput 153:215–224, 2004) propose a method for ranking extremely efficient decision making units (DMUs) in data envelopment analysis (DEA) using super-efficiency technique and l1-norm and they show that the presented method is able to eliminate the existing difficulties in some methods. This paper suggests an alternative transformation to convert the nonlinear mod...

2009
Lucas Zamboulis Rajesh Pampapathi Michael Zoumboulakis George Papamarkos George Roussos

The process of transforming and integrating XML data involves resolving the syntactic, semantic and schematic heterogeneities that the data sources present. Moreover, there are a number of different application settings in which such a process could take place, such as centralised or peer-to-peer settings, each of which needs to be considered separately. In this thesis, we investigate the probl...

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