Results 41 to 50 of about 9,778,055 (369)
Classical aspects of lightlike dimensional reduction [PDF]
, 2006 Some aspects of lightlike dimensional reduction in flat spacetime are studied with emphasis to classical applications. Among them the Galilean transformation of shadows induced by inertial frame changes is studied in detail by proving that, (i) the ...
E. Minguzzi, E. Minguzzi
core +3 more sources
Weighted Kernel Entropy Component Analysis for Fault Diagnosis of Rolling Bearings
Sensors, 2017 This paper presents a supervised feature extraction method called weighted kernel entropy component analysis (WKECA) for fault diagnosis of rolling bearings.
Hongdi Zhou +7 more
doaj +1 more source
Expansion of a quantum gas in a shell trap
New Journal of Physics, 2022 We report the observation of the controlled expansion of a two-dimensional (2D) quantum gas confined onto a curved shell-shaped surface. We start from the ellipsoidal geometry of a dressed quadrupole trap and introduce a novel gravity compensation ...
Yanliang Guo +8 more
doaj +1 more source
Jambura Journal of Mathematics, 2023 This paper discusses the performance of the K-Nearest Neighbor Algorithm with dimension reduction using Principal Component Analysis (PCA) in the case of diabetes disease classification.
Aldila Dinanti, Joko Purwadi
doaj +1 more source
Dimensional reduction and topological invariants of symmetry-protected topological phases [PDF]
, 2017 We review the dimensional reduction procedure in the group cohomology classification of bosonic SPT phases with finite abelian unitary symmetry group. We then extend this to include general reductions of arbitrary dimensions and also extend the procedure
Nathanan Tantivasadakarn
semanticscholar +1 more source
Modular Dimensionality Reduction [PDF]
, 2019 We introduce an approach to modular dimensionality reduction, allowing efficient learning of multiple complementary representations of the same object. Modules are trained by optimising an unsupervised cost function which balances two competing goals: Maintaining the inner product structure within the original space, and encouraging structural ...
Reeve, Henry W J +2 more
openaire +5 more sources
New Journal of Physics, 2022 The time instant—the first-passage time (FPT)—when a diffusive particle (e.g., a ligand such as oxygen or a signalling protein) for the first time reaches an immobile target located on the surface of a bounded three-dimensional domain (e.g., a hemoglobin
Denis S Grebenkov +2 more
doaj +1 more source
Euler Representation-Based Structural Balance Discriminant Projection for Machinery Fault Diagnosis
Machines, 2023 Fault diagnosis methods are usually sensitive to outliers and it is difficult to obtain and balance global and local discriminant information, which leads to poor separation between classes of low-dimensional discriminant features.
Maoyan Zhang +4 more
doaj +1 more source
Dimensionality reduction in neuroscience [PDF]
Current Biology, 2016 The nervous system extracts information from its environment and distributes and processes that information to inform and drive behaviour. In this task, the nervous system faces a type of data analysis problem, for, while a visual scene may be overflowing with information, reaching for the television remote before us requires extraction of only a ...
Adrienne L. Fairhall +2 more
openaire +3 more sources
Vacuum polarization in two-dimensional static spacetimes and dimensional reduction [PDF]
, 2002 We obtain an analytic approximation for the effective action of a quantum scalar field in a general static two-dimensional spacetime. We apply this to the dilaton gravity model resulting from the spherical reduction of a massive, non-minimally coupled ...
Akira Tomimatsu +28 more
core +2 more sources