The contiguous sequences of the terms (N-grams) in the documents are symmetrically distributed among different classes. The symmetrical distribution of the N-Grams raises uncertainty in the belongings of the N-Grams towards the class. In this paper, we focused on the selection of most discriminating N-Grams by reducing the effects of symmetrical distribution. In this context, a new text feature...

BACKGROUND Quantile regression, a robust semi-parametric approach, was used to examine the impact of gestational diabetes mellitus (GDM) across birthweight quantiles with a focus on maternal prepregnancy body mass index (BMI) and gestational weight gain (GWG). METHODS Using linked birth certificate, inpatient hospital and prenatal claims data we examined live singleton births to non-Hispanic ...

In the past we have conducted experiments that investigate the benefits and peculiarities attendant to alternative methods for tokenization, particularly overlapping character n-grams. This year we continued this line of work and report new findings reaffirming that the judicious use of n-grams can lead to performance surpassing that of word-based tokenization. In particular we examined: the re...

This work presents a new model, called a partial n-gram, in which probability estimates for only some patterns from the full joint distribution are kept. The main experimental result shows that a partial n-gram model for one value of n can have better predictive performance than a full n-gram model for a smaller n where the two models have the same number of parameters. N-grams serve as one of ...

We describe, analyze, and experimentally evaluate a new probabilistic model for wordsequence prediction in natural languages, based on prediction suffi~v trees (PSTs). By using efficient data structures, we extend the notion of PST to unbounded vocabularies. We also show how to use a Bayesian approach based on recursive priors over all possible PSTs to efficiently maintain tree mixtures. These ...

Four grams of glucose circulates in the blood of a person weighing 70 kg. This glucose is critical for normal function in many cell types. In accordance with the importance of these 4 g of glucose, a sophisticated control system is in place to maintain blood glucose constant. Our focus has been on the mechanisms by which the flux of glucose from liver to blood and from blood to skeletal muscle ...

OBJECTIVE To examine the association between a woman's birth weight and her subsequent fecundability. METHOD In this prospective cohort study, we included 2,773 Danish pregnancy planners enrolled in the internet-based cohort study "Snart-Gravid", conducted during 2007-2012. Participants were 18-40 years old at study entry, attempting to conceive, and were not receiving fertility treatment. Da...

In this work we investigate the usefulness of n-grams for document indexing in text categorization (TC). We call n-gram a set gk of n word stems, and we say that gk occurs in a document dj when a sequence of words appears in dj that, after stop word removal and stemming, consists exactly of the n stems in gk, in some order. Previous researches have investigated the use of n-grams (or some varia...