BACKGROUND Our approach to the BioCreative IV challenge of recognition and classification of drug names (CHEMDNER task) aimed at achieving high levels of precision by applying semantic similarity validation techniques to Chemical Entities of Biological Interest (ChEBI) mappings. Our assumption is that the chemical entities mentioned in the same fragment of text should share some semantic relati...

We discuss three forms of phantom prevention locking that have been proposed in the literature: (1) predicate locking [EGLT76], (2) precision locking [JBB81], and (3) index locking (specifically, KVL/IM locking [MOHAN90, MOHAN92, MOHAN96]). The predicate locking method was dropped from consideration in System R because of perceived problems [CHETAL81]. The precision locking technique was propos...

the sunn pest, eurygaster integriceps put. is an important pest of wheat in firozabad region of ardabil province, iran. in this study the spatial distribution of overwintered adult was investigated in rainfed wheat fields. then, fixed precision sequential sampling plan was developed and validated for estimating overwintered adult density. iwao's patchiness regression gave a better fit to d...

In order to improve the evaluation precision of education and training quality, a kind of quality evaluation model of combined medical education and training course (AHPPCASV) is put forward, which is a combination of analytic hierarchy process, principal component analysis and support vector machine. Firstly, AHP is used to construct the evaluation index body, and then the principal component ...

The object of Information Retrieval is to retrieve all relevant documents for a user query and only those relevant documents. Much research has focused on achieving this objective with little regard for storage overhead or performance. In the paper we evaluate the use of Part of Speech Tagging to improve, the index storage overhead and general speed of the system with only a minimal reduction t...