Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Assessing Site Effects and Geographic Transferability when Interpolating
  Point Referenced Spatial Data: A Digital Soil Mapping Case Study   When making inferences concerning the environment, ground truthed data will
frequently be available as point referenced (geostatistical) observations that
are clustered into multiple sites rather than uniformly spaced across the area
of interest. In such situations, the similarity of the dominant processes
influencing the observed data across sites and the accuracy with which models
fitted to data from one site can predict data from another site provide
valuable information for scientists seeking to make inferences from these data.
Such information may motivate a more informed second round of modelling of the
data and also provides insight into the generality of the models developed and
an indication of how these models may perform at predicting observations from
other sites. We have investigated the geographic transferability of site
specific models and compared the results of using different implementations of
site specific effects in models for data combined from two sites. Since we have
access to data on a broad collection of environmental characteristics that each
held potential to aid the interpolation of our geostatistical response
observations we have investigated these issues within the framework of a
computationally efficient method for variable selection when the number of
explanatory variables exceeds the number of observations. We have applied Least
Absolute Shrinkage Selection Operator (LASSO) regularized Multiple Linear
Regression (MLR) as fitted by the computationally efficient Least Angle
Regression algorithm. The response variable in our case study, soil carbon, is
of interest as a potential location for the sequestration of atmospheric carbon
dioxide and for its positive contribution to soil health and fertility.

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The categories of this paper are: patt-sol
2
The categories of this paper are: math
3
The categories of this paper are: physics
18
The categories of this paper are: econ
35
The categories of this paper are: mtrl-th
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The categories of this paper are: hep-lat
0
The categories of this paper are: hep-ph
5
The categories of this paper are: gr-qc
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The categories of this paper are: eess
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The categories of this paper are: funct-an
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The categories of this paper are: q-bio
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The categories of this paper are: bayes-an
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The categories of this paper are: adap-org
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The categories of this paper are: math-ph
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The categories of this paper are: alg-geom
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The categories of this paper are: atom-ph