Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Anatomy of Mitos Web Search Engine   Engineering a Web search engine offering effective and efficient information
retrieval is a challenging task. This document presents our experiences from
designing and developing a Web search engine offering a wide spectrum of
functionalities and we report some interesting experimental results. A rather
peculiar design choice of the engine is that its index is based on a DBMS,
while some of the distinctive functionalities that are offered include advanced
Greek language stemming, real time result clustering, and advanced link
analysis techniques (also for spam page detection).

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The categories of this paper are: solv-int
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The categories of this paper are: eess
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The categories of this paper are: chem-ph
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The categories of this paper are: math-ph
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The categories of this paper are: nucl-ex
5
The categories of this paper are: gr-qc
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The categories of this paper are: comp-gas
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The categories of this paper are: econ
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The categories of this paper are: bayes-an
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The categories of this paper are: q-bio
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The categories of this paper are: cond-mat
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The categories of this paper are: quant-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: mtrl-th
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The categories of this paper are: q-alg
7
The categories of this paper are: hep-th