Category: 7. Maths
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Attention-based message passing and dynamic graph convolution for spatiotemporal data imputation
The architecture of the ADGCN model proposed in this paper is shown in Fig. 1 and consists of two main parts: (1) A unified spatiotemporal messaging layer constructed using attention mechanisms; (2) Dynamic graph convolution method using dynamic adjacency matrix in conjunction with static adjacency matrix, and gating to pass information. The detailed steps for each…
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Why is landing safely on the Moon so hard?
China’s Chang’e-4 mission made the first-ever landing on the far side of the Moon in 2019.Credit: Xinhua/Alamy The M1 spacecraft, built by Tokyo-based company ispace, made a valiant bid to become the first private space vehicle to land on Moon. Instead, on 25 April, it became the latest in a long line of Moon missions…
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A link prediction-based recommendation system using transactional data
In this study, the research task is formulated as a link prediction problem. In this context, a heterogeneous graph that contains different types of nodes and links is generated from the transactions where nodes correspond to users and items, and links represent interaction occurrences between these users and items. Given such a network generated from…
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Modelling the effects of social distancing, antiviral therapy, and booster shots on mitigating Omicron spread
Data From February 26, 2021 to December 31, 2022, we compiled the data on confirmed cases, severe cases, primary vaccinations, and booster vaccinations8. In the parameter estimation period (February 26, 2021 to February 3, 2022), we utilized the data on confirmed cases, primary and booster vaccinations. For the prediction period (February 3, 2022 to December…
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Researchers propose new standards to fix what’s wrong in statistics
Credit: CC0 Public Domain A new paper in the Journal of Survey Statistics and Methodology indicates that the methods researchers use to report on analyses of survey data vary widely, and frequently contain mistakes. Publications containing these incorrect analyses yield results that can misinform policymakers, researchers, and practitioners. The researchers here propose new standards to…
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Simultaneous multi-crop land suitability prediction from remote sensing data using semi-supervised learning
Model evaluation The dataset is comprised of 2110 observations spanning 9 crops; more details on the dataset are presented in Table 3. The multi-crop model demonstrated an acceptable fit for all crops, except for corn and flaxseed (see Table 4). For corn, the number of unique districts in which it is grown is by far…
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Self-supervised learning for medical image classification: a systematic review and implementation guidelines
Hong, A. S. et al. Trends in Diagnostic Imaging Utilization among Medicare and Commercially Insured Adults from 2003 through 2016. Radiology 294, 342–350 (2020). Article PubMed Google Scholar Smith-Bindman, R. et al. Trends in Use of Medical Imaging in US Health Care Systems and in Ontario, Canada, 2000-2016. JAMA 322, 843–856 (2019). Article PubMed PubMed…
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Automatic evaluation-feedback system for automated social skills training
Dataset We used a human–human SST dataset collected in our previous research12. It includes data from 49 participants with the following characteristics: 15 ASDs, 15 schizophreniacs (SZ), and 19 controls. We collected these psychiatric or developmental difficulty groups to develop our automated SST system and to investigate their interaction differences. We included these groups since…
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Assessing nocturnal scratch with actigraphy in atopic dermatitis patients
Study design and data collection There were 23 AD patients enrolled with up to five nights of data collected from each participant, and three subjects were excluded due to device malfunction and software issues. We have 96 nights of data from 20 subjects to train the model. During each study night, participants slept at the…
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MIT graduate engineering, business, science programs ranked highly by U.S. News for 2023-24 | MIT News
U.S. News and Word Report has again placed MIT’s graduate program in engineering at the top of its annual rankings. The Institute has held the No. 1 spot since 1990, when the magazine first ranked such programs. The MIT Sloan School of Management also placed highly. It occupies the No. 4 spot for the best…