4,873 research outputs found
Controlling the Intrinsic Josephson Junction Number in a Mesa
In fabricating intrinsic Josephson
junctions in 4-terminal mesa structures, we modify the conventional fabrication
process by markedly reducing the etching rates of argon ion milling. As a
result, the junction number in a stack can be controlled quite satisfactorily
as long as we carefully adjust those factors such as the etching time and the
thickness of the evaporated layers. The error in the junction number is within
. By additional ion etching if necessary, we can controllably decrease
the junction number to a rather small value, and even a single intrinsic
Josephson junction can be produced.Comment: to bu published in Jpn. J. Appl. Phys., 43(7A) 200
ProtoDiv: Prototype-guided Division of Consistent Pseudo-bags for Whole-slide Image Classification
Due to the limitations of inadequate Whole-Slide Image (WSI) samples with
weak labels, pseudo-bag-based multiple instance learning (MIL) appears as a
vibrant prospect in WSI classification. However, the pseudo-bag dividing
scheme, often crucial for classification performance, is still an open topic
worth exploring. Therefore, this paper proposes a novel scheme, ProtoDiv, using
a bag prototype to guide the division of WSI pseudo-bags. Rather than designing
complex network architecture, this scheme takes a plugin-and-play approach to
safely augment WSI data for effective training while preserving sample
consistency. Furthermore, we specially devise an attention-based prototype that
could be optimized dynamically in training to adapt to a classification task.
We apply our ProtoDiv scheme on seven baseline models, and then carry out a
group of comparison experiments on two public WSI datasets. Experiments confirm
our ProtoDiv could usually bring obvious performance improvements to WSI
classification.Comment: 12 pages, 5 figures, and 3 table
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