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1987
The censored normal regression model considered by Tobin (1958), also commonly known as the ‘tobit’ model, is the following: $$y_i^* = \beta {x_i} + {u_i}.\quad {u_i} \sim IN(0,{\sigma ^2})$$ The observed y i are related to y i * according to the relationship $$\eqalign{ & {y_i} = y_i^*\quad if\,y_i^* > {y_0} \cr & = {y_0}\quad \;\quad ...
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The censored normal regression model considered by Tobin (1958), also commonly known as the ‘tobit’ model, is the following: $$y_i^* = \beta {x_i} + {u_i}.\quad {u_i} \sim IN(0,{\sigma ^2})$$ The observed y i are related to y i * according to the relationship $$\eqalign{ & {y_i} = y_i^*\quad if\,y_i^* > {y_0} \cr & = {y_0}\quad \;\quad ...
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1998
While schema descriptions are a necessity for large database applications, many current hypermedia applications have been developed without semantic modeling. Addressing these shortcomings several modeling techniques for hypermedia systems have been developed recently, which extend known domain modeling techniques from the database and software ...
Peter Fröhlich 0001 +2 more
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While schema descriptions are a necessity for large database applications, many current hypermedia applications have been developed without semantic modeling. Addressing these shortcomings several modeling techniques for hypermedia systems have been developed recently, which extend known domain modeling techniques from the database and software ...
Peter Fröhlich 0001 +2 more
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Journal of Management Information Systems, 1986
Abstract:The design of a model management component begins with choosing a representation for the models in the model base. We propose to represent models as data in a database having a logical structure suggested by the principles of structured modeling. The mathematical functions used in modeling are represented as factorable functions.
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Abstract:The design of a model management component begins with choosing a representation for the models in the model base. We propose to represent models as data in a database having a logical structure suggested by the principles of structured modeling. The mathematical functions used in modeling are represented as factorable functions.
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Models AND data; data AND models
Journal of Contaminant Hydrology, 2003David, Lerner +3 more
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2018
The research proposes a new approach to data quality management presenting three groups of DSL (Domain Specific Language). The first language group uses concept of data object in order to describe data to be analysed, the second group describes the requirements on data quality, and the third group describes data quality management process. The proposed
Zane Bicevska +2 more
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The research proposes a new approach to data quality management presenting three groups of DSL (Domain Specific Language). The first language group uses concept of data object in order to describe data to be analysed, the second group describes the requirements on data quality, and the third group describes data quality management process. The proposed
Zane Bicevska +2 more
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2000
In this paper, we analyze the existing approaches to image data modeling and we propose an image data model and a particular image representation in the proposed model. This model establishes a taxonomy based on a systematization over existing approaches. The image layouts in the model are described in semantic hierarchies.
William I. Grosky, Peter L. Stanchev
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In this paper, we analyze the existing approaches to image data modeling and we propose an image data model and a particular image representation in the proposed model. This model establishes a taxonomy based on a systematization over existing approaches. The image layouts in the model are described in semantic hierarchies.
William I. Grosky, Peter L. Stanchev
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Patient-derived xenograft models in cancer therapy: technologies and applications
Signal Transduction and Targeted Therapy, 2023Wantao Wu
exaly