4,022 research outputs found
An Efficient Approach for Polyps Detection in Endoscopic Videos Based on Faster R-CNN
Polyp has long been considered as one of the major etiologies to colorectal
cancer which is a fatal disease around the world, thus early detection and
recognition of polyps plays a crucial role in clinical routines. Accurate
diagnoses of polyps through endoscopes operated by physicians becomes a
challenging task not only due to the varying expertise of physicians, but also
the inherent nature of endoscopic inspections. To facilitate this process,
computer-aid techniques that emphasize fully-conventional image processing and
novel machine learning enhanced approaches have been dedicatedly designed for
polyp detection in endoscopic videos or images. Among all proposed algorithms,
deep learning based methods take the lead in terms of multiple metrics in
evolutions for algorithmic performance. In this work, a highly effective model,
namely the faster region-based convolutional neural network (Faster R-CNN) is
implemented for polyp detection. In comparison with the reported results of the
state-of-the-art approaches on polyps detection, extensive experiments
demonstrate that the Faster R-CNN achieves very competing results, and it is an
efficient approach for clinical practice.Comment: 6 pages, 10 figures,2018 International Conference on Pattern
Recognitio
Final Report for 2015 ER&L + EBSCO Library Fellowship Research Project
We report findings from a comprehensive assessment of e-book user experience (search and information seeking) from transaction logs, e-book usage data, and user tests. There are differences between e-book and general searches in terms of query length, number of queries and actions per session. There are also distinctive reading patterns from e-book usage data. The user tests showed that experience levels with e-books and features of e-book platforms influenced users’ information seeking behavior. Results of the assessment have significant implications for the design of e-book features to support users’ reading strategies and help libraries create a consistent e-book user experience
Entanglement criterion via general symmetric informationally complete measurements
We study the quantum separability problem by using general symmetric
informationally complete measurements and present a separability criterion for
arbitrary dimensional bipartite systems. We show by detailed examples that our
criterion is more powerful than the existing ones in entanglement detection.Comment: 8 pages, 5 figure
Amending coherence-breaking channels via unitary operations
The coherence-breaking channels play a significant role in quantum
information theory. We study the coherence-breaking channels and give a method
to amend the coherence-breaking channels by applying unitary operations. For
given incoherent channel , we give necessary and sufficient conditions
for the channel to be a coherence-breaking channel and amend it via unitary
operations. For qubit incoherent channels that are not
coherence-breaking ones, we consider the mapping and present
the conditions for coherence-breaking and channel amendment as well.Comment: 8 page
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