7,958 research outputs found
Galaxy Spin Classification I: Z-wise vs S-wise Spirals With Chirality Equivariant Residual Network
The angular momentum of galaxies (galaxy spin) contains rich information
about the initial condition of the Universe, yet it is challenging to
efficiently measure the spin direction for the tremendous amount of galaxies
that are being mapped by the ongoing and forthcoming cosmological surveys. We
present a machine learning based classifier for the Z-wise vs S-wise spirals,
which can help to break the degeneracy in the galaxy spin direction
measurement. The proposed Chirality Equivariant Residual Network (CE-ResNet) is
manifestly equivariant under a reflection of the input image, which guarantees
that there is no inherent asymmetry between the Z-wise and S-wise probability
estimators. We train the model with Sloan Digital Sky Survey (SDSS) images,
with the training labels given by the Galaxy Zoo 1 (GZ1) project. A combination
of data augmentation tricks are used during the training, making the model more
robust to be applied to other surveys. We find a increase of both
types of spirals when Dark Energy Spectroscopic Instrument (DESI) images are
used for classification, due to the better imaging quality of DESI. We verify
that the difference between the numbers of Z-wise and S-wise
spirals is due to human bias, since the discrepancy drops to
with our CE-ResNet classification results. We discuss the potential systematics
that are relevant to the future cosmological applications.Comment: 13+4 pages, 11 figures, 2 tables, to be submitted to Ap
Traditional Chinese medicine combination therapy for patients with steroid-dependent ulcerative colitis: study protocol for a randomized controlled trial
SPIRIT 2013 Checklist: recommended items to address in a clinical trial protocol and related documents. (DOC 133 kb
Image Deblurring According to Facially Recognized Locations Within the Image
This publication describes techniques for image deblurring according to a facially recognized locations within the image. An algorithm may use facial detection and recognition to selectively sharpen aspects of faces within an image and the surrounding area associated with the facial detection. In one or more aspects, the selectivity of sharpening improves the computational load and other aspects of image provision to improve overall computer function, power consumption, and user experience. Individual faces within the image may be cropped or thumbnailed, providing portions of the image that include the faces. Counterpart images associated with the individual faces may be found within a database having a repository of sharp features associated with the counterpart images. As such, the features may be integrated with the blurred faces of the original image to sharpen an image output
Improving Code Generation by Dynamic Temperature Sampling
Recently, Large Language Models (LLMs) have shown impressive results in code
generation. However, existing decoding strategies are designed for Natural
Language (NL) generation, overlooking the differences between NL and
programming languages (PL). Due to this oversight, a better decoding strategy
for code generation remains an open question. In this paper, we conduct the
first systematic study to explore a decoding strategy specialized in code
generation. With an analysis of loss distributions of code tokens, we find that
code tokens can be divided into two categories: challenging tokens that are
difficult to predict and confident tokens that can be easily inferred. Among
them, the challenging tokens mainly appear at the beginning of a code block.
Inspired by the above findings, we propose a simple yet effective method:
Adaptive Temperature (AdapT) sampling, which dynamically adjusts the
temperature coefficient when decoding different tokens. We apply a larger
temperature when sampling for challenging tokens, allowing LLMs to explore
diverse choices. We employ a smaller temperature for confident tokens avoiding
the influence of tail randomness noises. We apply AdapT sampling to LLMs with
different sizes and conduct evaluations on two popular datasets. Results show
that AdapT sampling significantly outperforms state-of-the-art decoding
strategy
Thermal management of the hotspots in 3-D integrated circuits
Vertical integration for microelectronics possesses significant challenges
due to its fast dissipation of heat generated in multiple device planes.
This paper focuses on thermal management of a 3-D integrated circuit, and
micro-channel cooling is adopted to deal with the 3-D integrated
circuitthermal problems. In addition, thermal through-silicon vias are also
used to improve the capacity of heat trans-mission. It is found that
combination of microchannel cooling and thermal through-silicon vias can
remarkably alleviate the hotspots. The results presented in this paper are
expected to aid in the development of thermal design guidelines for 3-D
integrated circuits
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