Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Unsupervised Language Acquisition: Theory and Practice   In this thesis I present various algorithms for the unsupervised machine
learning of aspects of natural languages using a variety of statistical models.
The scientific object of the work is to examine the validity of the so-called
Argument from the Poverty of the Stimulus advanced in favour of the proposition
that humans have language-specific innate knowledge. I start by examining an a
priori argument based on Gold's theorem, that purports to prove that natural
languages cannot be learned, and some formal issues related to the choice of
statistical grammars rather than symbolic grammars. I present three novel
algorithms for learning various parts of natural languages: first, an algorithm
for the induction of syntactic categories from unlabelled text using
distributional information, that can deal with ambiguous and rare words;
secondly, a set of algorithms for learning morphological processes in a variety
of languages, including languages such as Arabic with non-concatenative
morphology; thirdly an algorithm for the unsupervised induction of a
context-free grammar from tagged text. I carefully examine the interaction
between the various components, and show how these algorithms can form the
basis for a empiricist model of language acquisition. I therefore conclude that
the Argument from the Poverty of the Stimulus is unsupported by the evidence.

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The categories of this paper are: cond-mat
8
The categories of this paper are: hep-ex
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The categories of this paper are: mtrl-th
25
The categories of this paper are: patt-sol
13
The categories of this paper are: quant-ph
20
The categories of this paper are: acc-phys
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The categories of this paper are: bayes-an
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The categories of this paper are: solv-int
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The categories of this paper are: q-fin
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The categories of this paper are: eess
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The categories of this paper are: econ
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The categories of this paper are: q-alg
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The categories of this paper are: nlin
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The categories of this paper are: astro-ph
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The categories of this paper are: hep-ph
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The categories of this paper are: alg-geom