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Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Implicit biases of optimization algorithms for neural networks and their effects on generalization
神经网络 优化算法 隐式偏差 泛化的影响
2023/4/26
Modern neural networks are usually over-parameterized—the number of parameters exceeds the number of training data. In this case the loss functions tend to have many (or even infinite) global minima, ...
It’s no secret that people harbor biases — some unconscious, perhaps, and others painfully overt. The average person might suppose that computers — machines typically made of plastic, steel, glass, si...
Range Biases on the WAAS Geostationary Satellites
Range Biases WAAS Geostationary Satellites
2015/6/26
Due to limited receiver bandwidth and tracking configuration differences, measurements made on a narrowband geostationary satellite signal may differ significantly from those made on GPS signals and r...
The Impact of Measurement Biases on Availability for CAT III LAAS
Measurement Biases Availability CAT III LAAS
2015/6/26
The original error description for the Local Area Augmentation System (LAAS) assumed unbiased measurement errors. In practice, however, satellite ranging errors may exhibit nonzero means. The LAAS err...
Analysis of Carrier Phase and Group Delay Biases Introduced by CRPA Hardware
Carrier Phase Group Delay Biases Introduced CRPA Hardware
2015/6/26
The benefits afforded by Controlled Reception Pattern Antennas (CRPAs) in multipath and interference mitigation are well documented, and they find use in many applications today. As such, CRPAs are be...
Multiple constellations and modernized GNSS signals promise to bring a wealth of ranging possibilities to navigation users. They offer improved geometry and redundancy, immunity to ionospheric errors,...
Recovery of Systematic Biases in Laser Altimeters Using Natural Surfaces
Laser Altimetry Error model Calibration
2015/3/10
Elements of accuracy of LIDAR systems and the corrections of systematic errors have received growing attention in recent years. The expected level of accuracy and the additional processing that is nee...
Managing Optimism Biases in the Delivery of Large-Infrastructure Projects: A Corporate Performance Benchmarking Approach
Managing Optimism Biases the Delivery of Large-Infrastructure Projects A Corporate Performance Benchmarking Approach
2010/8/16
Optimism bias has been a considerable challenge in the planning and delivery of public services, particularly infrastructure mega projects. This has resulted in consistently underestimated costs and o...
Managing Optimism Biases in the Delivery of Large-Infrastructure Projects：A Corporate Performance Benchmarking Approach
Managing Optimism Biases Delivery Large-Infrastructure Projects Performance Benchmarking Approach
2010/3/16
Optimism bias has been a considerable challenge in the planning and delivery of public services, particularly infrastructure mega projects. This has resulted in consistently underestimated costs and o...