منابع مشابه
S2I+: Armazenamento Eficiente em Índice Espaco-Textual
With the popularization of Smartphones with GPS, there is a huge amount of data with spatial and textual information being produced and shared. Hybrid indexes that combine spatial and textual information are being proposed to process queries efficiently. One of the most efficient indexes is S2I (Spatial Inverted Index). However, S2I has a major drawback in terms of index size. In this paper, we...
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The extraction of the keywords that characterize a document in a given collection is one of the most important components of an Information Retrieval system. In this article, we propose to apply shallow parsing, implemented by means of cascades of finite-state transducers, to extract complex index terms based on an approximated grammar of Spanish. The coverage of the grammar is small but it all...
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We review the experimental and theoretical status of baryons containing one heavy quark. The charm and bottom baryon states are classified and their mass spectra are listed. The appropriate theoretical framework for the description of heavy baryons is the Heavy Quark Effective Theory, whose general ideas and methods are introduced and illustrated in specific examples. We present simple covarian...
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We perform a global leading-order QCD fit to recent polarized structure function data in order to extract a consistent set of spin-dependent parton distributions. Assuming that there is no significant intrinsic polarization of the quark sea, the data are consistent with a modest amount of the proton's spin carried by the gluon, although the shape of the gluon distribution is not well constraine...
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ژورنال
عنوان ژورنال: Revista Brasileira de Estudos Pedagógicos
سال: 2019
ISSN: 2176-6681,0034-7183
DOI: 10.24109/2176-6681.rbep.94i238.364