Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Integrated approach for the identification of spatial patterns related
  to renewable energy potential in European territories   The study presents an effort to classify the territories of a specific area,
according to similarities in the estimated potential of their renewable
sources, considering also their economic and sociodemographic structure and
their geographic features. Specifically, the paper focuses on the area of EU28
and Switzerland and uses as basis for the analysis, data estimating the
potential of renewable energy sources collected and elaborated in the framework
of the project HotMaps (Horizon 2020). The method used to group the territorial
units is cluster analysis, and specifically the k-means algorithm. The data
present some interesting patterns and the territories of EU28 and Switzerland
at NUTS3 level are classified into 17 clusters. The analysis shows the presence
of heterogeneity within national borders and among territories comprised in the
macro regions target of specific EU programmes, specifically the
Adriatic-Ionian region, the Alpine region, the Baltic Sea region and the Danube
region. The results of this research are meant to be used by European policy
makers in developing more focused transnational renewable energy policies and
strategies.

23
The categories of this paper are: solv-int
27
The categories of this paper are: comp-gas
15
The categories of this paper are: nucl-ex
35
The categories of this paper are: mtrl-th
5
The categories of this paper are: gr-qc
17
The categories of this paper are: q-fin
33
The categories of this paper are: plasm-ph
36
The categories of this paper are: cmp-lg
18
The categories of this paper are: econ
16
The categories of this paper are: stat
19
The categories of this paper are: eess
34
The categories of this paper are: chem-ph
6
The categories of this paper are: astro-ph
21
The categories of this paper are: adap-org
25
The categories of this paper are: patt-sol
8
The categories of this paper are: hep-ex