Results 21 to 30 of about 5,908,180 (304)
Optimal Quantum Phase Estimation [PDF]
Physical Review Letters, 2009 By using a systematic optimization approach we determine quantum states of light with definite photon number leading to the best possible precision in optical two mode interferometry. Our treatment takes into account the experimentally relevant situation of photon losses.
Dorner, U +6 more
openaire +3 more sources
Aggregate-based Training Phase for ML-based Cardinality Estimation
, 2021 Cardinality estimation is a fundamental task in database query processing and optimization. As shown in recent papers, machine learning (ML)-based approaches may deliver more accurate cardinality estimations than traditional approaches. However, a lot of
Woltmann, Lucas +3 more
core +1 more source
Efficient knowledge-aided target relocation algorithm for airborne radar
The Journal of Engineering, 2019 This letter addresses the problem of target relocation in wide-area ground moving target indication system. The antenna pattern information is exploited as prior knowledge to enhance the performance of airborne radar. Firstly, the ideal target relocation
Hongmeng Chen +7 more
doaj +1 more source
Conditionally unbiased estimation in phase II/III clinical trials with early stopping for futility [PDF]
, 2013 Seamless phase II/III clinical trials combine traditional phases II and III into a single trial that is conducted in two stages, with stage 1 used to answer phase II objectives such as treatment selection and stage 2 used for the confirmatory analysis ...
Todd, Susan C. +6 more
core +1 more source
Machine Learning for Quantum Metrology
Proceedings, 2019 Phase estimation represents a significant example to test the application of quantum theory for enhanced measurements of unknown physical parameters. Several recipes have been developed, allowing to define strategies to reach the ultimate bounds in the ...
Nicolò Spagnolo +5 more
doaj +1 more source
Human Circadian Phase Estimation from Signals Collected in Ambulatory Conditions Using an Autoregressive Model [PDF]
, 2013 Phase estimation of the human circadian rhythm is a topic that has been explored using various modeling approaches. The current models range from physiological to mathematical, all attempting to estimate the circadian phase from different physiological ...
Gil, Enrique A +12 more
core +1 more source
Adaptive Filtering-Based Pseudo Open-Loop Three-Phase Grid-Synchronization Technique
Energies, 2020 This paper studies the grid-synchronization problem of three-phase system. Second-order adaptive filters are a popular tool for grid-synchronization.
Hafiz Ahmed +3 more
doaj +1 more source
Unbiased quantum phase estimation
Quantum Information and Computation, 2023 Quantum phase estimation algorithm (PEA) is one of the most important algorithms in early studies of quantum computation. However, we find that the PEA is not an unbiased estimation, which prevents the estimation error from achieving an arbitrarily small level. In this paper, we propose an unbiased phase estimation algorithm (UPEA) based on the
Xi Lu, Hongwei Lin
openaire +3 more sources
Coherent shift estimation for stacks of SAR images [PDF]
, 2011 Speckle tracking is used with SAR images to estimate displacements, in ways that support or integrate interferometric measurements. This paper derives Fisher information expressions for the displacement estimation using coherent speckle tracking, for the
De Zan, Francesco, Francesco De Zan
core +1 more source
Estimation Bounds of Beat Signal in the R-Mode Localization System
IEEE Access, 2021 The R-Mode system is a terrestrial navigation system currently under development, which exploits existing means of medium frequency radio transmission. The positioning and timing performance depends on the estimation of the signals’ phase offset ...
Lars Grundhofer +2 more
doaj +1 more source