Spelling suggestions: "subject:"finalform"" "subject:"signalform""
1 |
A methodology for neural spatial interaction modelingFischer, Manfred M., Reismann, Martin January 2002 (has links) (PDF)
This paper attempts to develop a mathematically rigid and unified framework for
neural spatial interaction modeling. Families of classical neural network models, but
also less classical ones such as product unit neural network ones are considered for the
cases of unconstrained and singly constrained spatial interaction flows. Current
practice appears to suffer from least squares and normality assumptions that ignore the
true integer nature of the flows and approximate a discrete-valued process by an
almost certainly misrepresentative continuous distribution. To overcome this deficiency
we suggest a more suitable estimation approach, maximum likelihood estimation under
more realistic distributional assumptions of Poisson processes, and utilize a global
search procedure, called Alopex, to solve the maximum likelihood estimation problem.
To identify the transition from underfitting to overfitting we split the data into training,
internal validation and test sets. The bootstrapping pairs approach with replacement is
adopted to combine the purity of data splitting with the power of a resampling
procedure to overcome the generally neglected issue of fixed data splitting and the
problem of scarce data. In addition, the approach has power to provide a better
statistical picture of the prediction variability, Finally, a benchmark comparison
against the classical gravity models illustrates the superiority of both, the
unconstrained and the origin constrained neural network model versions in terms of
generalization performance measured by Kullback and Leibler's information criterion.
|
2 |
The role of the priests in Israelite identity formation in the exilic/post-exilic period with special reference to Leviticus 19:1-19a / Rol van die priesters in die Israelitiese identiteitsvorming tydens die ballingskaps-/ na-ballingskapstydperk met spesiale verwysing na Levitikus 19:1-19aBeer, Leilani 07 1900 (has links)
Bibliography: leaves 289-298 / Source-criticism of the Pentateuch suggests that the priests (Source P) alone authored the
Holiness Code – the premise being that Source P forms one religious, literate and elite group
of several. Through the endeavor to redefine Israelite identity during the Neo-Babylonian
Empire of 626–539 BCE and the Achaemenid Persian Empire of 550–330 BCE, various
ideologies of Israelite identity were produced by various religious, literate and elite groups.
Possibly, the Holiness Code functions as the compromise reached between two such groups,
these being: the Shaphanites, and the Zadokites. Moreover, the Holiness Code functions as
the basis for the agreed identity of Israel as seen by the Shaphanites and the Zadokites.
Specifically, in Leviticus 19:1-19a – as being the Levitical decalogue of the Holiness Code,
and which forms the emphasis of this thesis – both Shaphanite and Zadokite ideologies are
expressed therein.
The Shaphanite ideology is expressed through the Mosaic tradition: i.e., through the Law;
and the Zadokite ideology is expressed through the Aaronide tradition: i.e., through the Cult.
In the debate between the supremacy of the Law, or the Cult – i.e., Moses or Aaron – the
ancient Near Eastern convention of the ‘rivalry between brothers’ is masterfully negotiated
in Leviticus 19:1-19a. / Old Testament and Ancient Near Eastern Studies / D. Phil. (Old Testament)
|
Page generated in 0.1358 seconds