BACKGROUND In Sub-Saharan Africa (SSA), HIV-infected patients may underreport alcohol consumption. We compared self-reports of drinking to phosphatidylethanol (PEth), an alcohol biomarker. In particular, we assessed beverage-type-adjusted fractional graduated frequency (FGF) and quantity frequency (QF) measures of grams of alcohol, novel nonvolume measures, and the Alcohol Use Disorders Identif...

Source code author identification deals with identifying the most likely author of a computer program, given a set of predefined author candidates. There are several scenarios where digital evidence of this kind plays a role in investigation and adjudication, such as code authorship disputes, intellectual property infringement, tracing the source of code left in the system after a cyber attack,...

We present a new index for approximate string matching. The index collects text q-samples, that is, disjoint text substrings of length q, at fixed intervals and stores their positions. At search time, part of the text is filtered out by noticing that any occurrence of the pattern must be reflected in the presence of some text q-samples that match approximately inside the pattern. Hence the inde...

Automatic detection of the sentiment of a given text is a difficult but highly relevant task. Application areas range from financial news, where information about sentiments can be used to predict stock movements, to social media, where user recommendations can determine success or failure of a product. We have developed a methodology, based on character ngrams, to detect sentiments encoded in ...

We have observed in recent years a growing interest in similarity search on large collections of biological sequences. Contributing to the interest, this paper presents a method for indexing the DNA sequences efficiently based on q-grams to facilitate similarity search in a DNA database and sidestep the need for linear scan of the entire database. Two level index – hash table and c-trees – are ...

Introduction: Preterm infants, with a gestational age <29 weeks are at high risk to suffer from osteopenia of prematurity (39%) and may develop spontaneous fractures in 2%-10%. In addition to an insufficient prenatal bone mineralization, the inadequate supplementation with calcium/phosphorus and vitamin D3, immobility, prolonged parenteral nutrition and adverse effects of steroids or diuretics ...

Approximate join is an important part of many data cleaning and integration methodologies. Various similarity measures have been proposed for accurate and efficient matching of string attributes. The accuracy of the similarity measures highly depends on the characteristics of the data such as amount and type of the errors and length of the strings. Recently, there has been an increasing interes...