119,330 research outputs found
A Large-Scale Comparison of Historical Text Normalization Systems
There is no consensus on the state-of-the-art approach to historical text
normalization. Many techniques have been proposed, including rule-based
methods, distance metrics, character-based statistical machine translation, and
neural encoder--decoder models, but studies have used different datasets,
different evaluation methods, and have come to different conclusions. This
paper presents the largest study of historical text normalization done so far.
We critically survey the existing literature and report experiments on eight
languages, comparing systems spanning all categories of proposed normalization
techniques, analysing the effect of training data quantity, and using different
evaluation methods. The datasets and scripts are made publicly available.Comment: Accepted at NAACL 201
Compactly generating all satisfying truth assignments of a Horn formula
As instance of an overarching principle of exclusion an algorithm is
presented that compactly (thus not one by one) generates all models of a Horn
formula. The principle of exclusion can be adapted to generate only the models
of weight . We compare and contrast it with constraint programming,
integer programming, and binary decision diagrams.Comment: Considerably improves upon the readibility of the previous versio
Exact uncertainty principle and quantization: implications for the gravitational field
The quantization of the gravitational field is discussed within the exact
uncertainty approach. The method may be described as a Hamilton-Jacobi
quantization of gravity. It differs from previous approaches that take the
classical Hamilton-Jacobi equation as their starting point in that it
incorporates some new elements, in particular the use of a formalism of
ensembles in configuration space and the postulate of an exact uncertainty
relation. These provide the fundamental elements needed for the transition from
the classical theory to the quantum theory.Comment: 6 pages; submitted to the proceedings of DICE2004, to appear in the
Brazilian Journal of Physic
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