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5 papers · 1 filter
Crossover from self-defocusing to discrete trapping in nonlinear waveguide arrays
Michal Matuszewski, Christian R. Rosberg, Dragomir N. Neshev +6
We predict a sharp crossover from nonlinear self-defocusing to discrete self-trapping of a narrow Gaussian beam with the increase of the refractive index contrast in a periodic pho…
A Generalised Hadamard Transform
K. J. Horadam
A Generalised Hadamard Transform for multi-phase or multilevel signals is introduced, which includes the Fourier, Generalised, Discrete Fourier, Walsh-Hadamard and Reverse Jacket T…
Enhancing Content-And-Structure Information Retrieval using a Native XML Database
Jovan Pehcevski, James A. Thom, Anne-Marie Vercoustre
Three approaches to content-and-structure XML retrieval are analysed in this paper: first by using Zettair, a full-text information retrieval system; second by using eXist, a nativ…
Hybrid XML Retrieval: Combining Information Retrieval and a Native XML Database
Jovan Pehcevski, James A. Thom, Anne-Marie Vercoustre
This paper investigates the impact of three approaches to XML retrieval: using Zettair, a full-text information retrieval system; using eXist, a native XML database; and using a hy…
Users and Assessors in the Context of INEX: Are Relevance Dimensions Relevant?
Jovan Pehcevski, James A. Thom, Anne-Marie Vercoustre
The main aspects of XML retrieval are identified by analysing and comparing the following two behaviours: the behaviour of the assessor when judging the relevance of returned docum…