منابع مشابه
User Profile Refinement Using Explicit User Interest Modeling
In this paper, we present an approach to refine user profiles that were derived from Web server logs in an automated procedure. In most application scenarios, such automatically derived profiles can only deliver a preliminary result and require human interaction for further refinement. We describe the individual steps to enhance and refine derived user profiles which can be used for personaliza...
متن کاملMotif Refinement using Hybrid Expectation Maximization based Neighborhood profile Search
The main goal of the motif finding problem is to detect novel, over-represented unknown signals in a set of sequences (for eg. transcription factor binding sites in a genome). Most widely used algorithms for finding motifs obtain a generative probabilistic representation of these over-represented signals and try to discover profiles that maximize the information content score. Although these pr...
متن کاملHydrogen Atom Positions in Kaolinite by Neutron Profile Refinement
-A structure refinement of kaolinite made using the Rietveld neutron profile refinement technique has given non-hydrogen atom positions which were not significantly different from those given by B. B. Zvyagin in i960. All of the hydrogen atoms have been located; the three inner-surface hydrogen atoms are involved in interlayer hydrogen bonds with lengths of 2.95(4), 2.95(4), and 3.06(4) ]k with...
متن کاملRefinement of time-of-flight Profile Parameters in GSAS
In order to fit the peaks observed in a time-of-flight diffraction experiment two sets of information are required. The first set, the diffractometer constants, is used to calculate the time-of-flight positions of the Bragg reflections (whose d-spacings can be determined from the unit cell parameters and space group information). The second set, the profile parameters, are used to calculate the...
متن کاملDiagonal Matrix Reduction over Refinement Rings
Abstract: A ring R is called a refinement ring if the monoid of finitely generated projective R- modules is refinement. Let R be a commutative refinement ring and M, N, be two finitely generated projective R-nodules, then M~N if and only if Mm ~Nm for all maximal ideal m of R. A rectangular matrix A over R admits diagonal reduction if there exit invertible matrices p and Q such that PAQ is...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Acta Crystallographica Section A Foundations of Crystallography
سال: 1981
ISSN: 0108-7673
DOI: 10.1107/s010876738109140x