نتایج جستجو برای: q matrix
تعداد نتایج: 478442 فیلتر نتایج به سال:
Abstract In cognitive diagnosis assessment (CDA), the impact of misspecified item-attribute relations (or “Q-matrix”) designed by subject-matter experts has been a great challenge to real-world applications. This study examined parameter estimation CDA with expert-designed Q-matrix and two refined Q-matrices for international large-scale data. Specifically, G-DINA model was used analyze TIMSS d...
We consider the valence-bond-solid ground state of the q-deformed higher-spin AKLT model (q-VBS state). We investigate the eigenvalues and eigenvectors of a matrix (G matrix), which is constructed from the matrix product representation of the q-VBS state. We compute the longitudinal and transverse spin-spin correlation functions, and determine the correlation amplitudes and correlation lengths ...
In this paper, we prove the q -analogue of the fundamental theorem of Riordan arrays. In particular, by defining two new binary operations ∗q and ∗1/q , we obtain a q -analogue of the Riordan representation of the q -Pascal matrix. In addition, by aid of the q -Lagrange expansion formula we get q -Riordan representation for its inverse matrix.
On a nonstandard two-parametric quantum algebra and its connections with U p,q (gl(2)) and U p,q (gl(1|1)) Abstract. A quantum algebra U p,q (ζ, H, X ±) associated with a nonstandard R-matrix with two deformation parameters(p, q) is studied and, in particular, its universal R-matrix is derived using Reshetikhin's method. Explicit construction of the (p, q)-dependent nonstandard R-matrix is obta...
We give a systolic algorithm and array for bidiagonalization of an n x n matrix in O(nlog, n) time, using O(n2) cells. Bandedness of the input matrix may be effectively exploited. If the matrix is banded, with p nonzero subdiagonals and q nonzero superdiagonais, then 4n In(p + q) + O(n) clocks and 2n(p + q ) + O((p + q)’ + n) cells are needed. This is faster than the best previously reported re...
Painlevè equation for conformal blocks is a combined corollary of integrability and Ward identities, which can be explicitly revealed in the matrix model realization AGT relations. We demonstrate this some detail, both q-Painlevè equations q-Virasoro block, or dual gauge theory 5d, ordinary equations, 4d. Especially interesting continuous limit from 5d to 4d its description at level eight τ-fun...
As a necessary step in construction of elliptic matrix models, which preserve the superintegrability property ?char, we suggest an deformation peculiar loci pk?n, play important role precise formulation this property. The suggestion is to define pk?n-loci as functions with right asymptotics at ??i?. If hypothesis correct, one can move substituting Schur and Macdonald characters by GNS stu...
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