67,298 research outputs found
Convolutional Neural Networks for Sentence Classification
We report on a series of experiments with convolutional neural networks (CNN)
trained on top of pre-trained word vectors for sentence-level classification
tasks. We show that a simple CNN with little hyperparameter tuning and static
vectors achieves excellent results on multiple benchmarks. Learning
task-specific vectors through fine-tuning offers further gains in performance.
We additionally propose a simple modification to the architecture to allow for
the use of both task-specific and static vectors. The CNN models discussed
herein improve upon the state of the art on 4 out of 7 tasks, which include
sentiment analysis and question classification.Comment: To appear in EMNLP 201
M-furcations in coupled maps
We study the scaling behavior of -furcation
sequences of -period orbits in two coupled one-dimensional
(1D) maps. Using a renormalization method, how the scaling behavior depends on
is particularly investigated in the zero-coupling case in which the two 1D
maps become uncoupled. The zero-coupling fixed map of the -furcation
renormalization transformation is found to have three relevant eigenvalues
, , and ( and are the parameter and
orbital scaling factors of 1D maps, respectively). Here the second and third
ones, and , called the ``coupling eigenvalues'', govern the scaling
behavior associated with coupling, while the first one governs the
scaling behavior of the nonlinearity parameter like the case of 1D maps. The
renormalization results are also confirmed by a direct numerical method.Comment: 18 pages + 2 figures (available upon request), Revtex 3.
Octahedral developing of knot complement II: Ptolemy coordinates and applications
It is known that a knot complement (minus two points) decomposes into ideal
octahedra with respect to a given knot diagram.
In this paper, we study the Ptolemy variety for such an octahedral
decomposition in perspective of Thurston's gluing equation variety.
More precisely, we compute explicit Ptolemy coordinates in terms of segment
and region variables, the coordinates of the gluing equation variety motivated
from the volume conjecture.
As a consequence, we present an explicit formula for computing the
obstruction to lifting a -representation of the
knot group to a -representation.
We also present a diagrammatic algorithm to compute a holonomy representation
of the knot group.Comment: 32 pages, 21 figue
Credibility Adjusted Term Frequency: A Supervised Term Weighting Scheme for Sentiment Analysis and Text Classification
We provide a simple but novel supervised weighting scheme for adjusting term
frequency in tf-idf for sentiment analysis and text classification. We compare
our method to baseline weighting schemes and find that it outperforms them on
multiple benchmarks. The method is robust and works well on both snippets and
longer documents
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