355 research outputs found
Projection onto the capped simplex
We provide a simple and efficient algorithm for computing the Euclidean
projection of a point onto the capped simplex---a simplex with an additional
uniform bound on each coordinate---together with an elementary proof. Both the
MATLAB and C++ implementations of the proposed algorithm can be downloaded at
https://eng.ucmerced.edu/people/wwang5
A simple model for detection of rare sound events
We propose a simple recurrent model for detecting rare sound events, when the
time boundaries of events are available for training. Our model optimizes the
combination of an utterance-level loss, which classifies whether an event
occurs in an utterance, and a frame-level loss, which classifies whether each
frame corresponds to the event when it does occur. The two losses make use of a
shared vectorial representation the event, and are connected by an attention
mechanism. We demonstrate our model on Task 2 of the DCASE 2017 challenge, and
achieve competitive performance.Comment: Accepted by Interspeech 201
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