Results 11 to 20 of about 17,553 (306)

On Isotropy Calibration of Transformer Models [PDF]

open access: yesProceedings of the Third Workshop on Insights from Negative Results in NLP, 2022
Different studies of the embedding space of transformer models suggest that the distribution of contextual representations is highly anisotropic - the embeddings are distributed in a narrow cone. Meanwhile, static word representations (e.g., Word2Vec or GloVe) have been shown to benefit from isotropic spaces.
Ding, Yue   +4 more
openaire   +3 more sources

Isotropy, Clusters, and Classifiers [PDF]

open access: yesProceedings of the 62nd Annual Meeting of the Association for Computational Linguistics (Volume 2: Short Papers)
Whether embedding spaces use all their dimensions equally, i.e., whether they are isotropic, has been a recent subject of discussion. Evidence has been accrued both for and against enforcing isotropy in embedding spaces. In the present paper, we stress that isotropy imposes requirements on the embedding space that are not compatible with the presence ...
Timothee Mickus   +2 more
core   +7 more sources

spTest: An R Package Implementing Nonparametric Tests of Isotropy [PDF]

open access: yesJournal of Statistical Software, 2018
An important step in modeling spatially-referenced data is appropriately specifying the second order properties of the random field. A scientist developing a model for spatial data has a number of options regarding the nature of the dependence between ...
Zachary D. Weller
doaj   +2 more sources

On Isotropy Calibration of Transformers

open access: yesCoRR, 2021
Different studies of the embedding space of transformer models suggest that the distribution of contextual representations is highly anisotropic - the embeddings are distributed in a narrow cone. Meanwhile, static word representations (e.g., Word2Vec or GloVe) have been shown to benefit from isotropic spaces.
Ding, Yue   +4 more
openaire   +4 more sources

The scale of cosmic isotropy [PDF]

open access: yesJournal of Cosmology and Astroparticle Physics, 2012
The most fundamental premise to the standard model of the universe, the Cosmological Principle (CP), states that the large-scale properties of the universe are the same in all directions and at all comoving positions. Demonstrating this theoretical hypothesis has proven to be a formidable challenge.
Marinoni, Christian, Bel, J, Buzzi, A
openaire   +3 more sources

Deduction of Electric Field Module in a Multilayer of Isotropic Materials to Detect Surface Plasmons with a Graphical User Interface

open access: yesJournal of Microwaves, Optoelectronics and Electromagnetic Applications, 2021
Electric field module for any isotropic multilayer thin film structure, is presented as analytical deduction. Analytic expressions for the electric field distribution are developed initially for a monolayer isotropic system based on Airy's formulae and ...
B. Garibello, Y. Martín
doaj   +1 more source

The isotropy of compact universes [PDF]

open access: yesClassical and Quantum Gravity, 2001
22 pages in LaTeX2e with the amsmath ...
Barrow, John D., Kodama, Hideo
openaire   +3 more sources

Kinematic Analysis of a Parallel Manipulator Driven by Perpendicular Linear Actuators

open access: yesActuators, 2021
In this paper, a goniometer-type specimen stage with a linear actuation mechanism mounted on a rotation mechanism is introduced. The linear actuation mechanism was modeled as a spatial parallel manipulator consisting of a moving body, three linear ...
Kee-Bong Choi   +4 more
doaj   +1 more source

Dynamic stability of heated geometrically irregular cylindrical shell in supersonic gas flow

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2018
On the basis of the Love model, a geometrically irregular heated cylindrical shell blown by a supersonic gas flow from one of its main surfaces is considered.
Grigory N Belostochnyi, Olga A Myltcina
doaj   +1 more source

Wave Propagation in Periodic Metallic Structures with Equilateral Triangular Holes

open access: yesApplied Sciences, 2020
This paper studies wave propagation in a periodic parallel-plate waveguide with equilateral triangular holes. A mode-matching method is implemented to analyze the dispersion diagram of the structure possessing glide and mirror symmetries. Both structures
Antonio Alex-Amor   +6 more
doaj   +1 more source

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