Relation Discovery discovers predicates (relation types) from a text corpus relying on the co-occurrence of two named entities in the same sentence. This is a very narrowing constraint: it represents only a small fraction of all relation mentions in practice. In this paper we propose a high recall approach for predicate extraction which enables covering up to 16 times more sentences in a large ...

ILQUA first participated in TREC QA main task in 2003. This year we have made modifications to the system by removing some components with poor performance and enhanced the system with new methods and new components. The newly built ILQUA is an IE-driven QA system. To answer “Factoid” and “List” questions, we apply our answer extraction methods on NE-tagged passages. The answer extraction metho...

This paper presents new Information Extraction scenarios which are linguistically and structurally more challenging than the traditional MUC scenarios. Traditional views on event structure and template design are not adequate for the more complex scenarios. The focus of this paper is to show the complexity of the scenarios, and propose a way to recover the structure of the event. First we ident...

A coupled equations approach is used to calculate the probabilities of photophysical processes in the ten photon absorption spectrum of H2 at wavelength A = 532nm At high intensities, ie, I~10~°W/cm~, it is shown that above threshold photodissocianon (ATPD) occurs readily m the B ~3]

BACKGROUND: Infective endocarditis (IE) was a significant cause of morbidity and mortality, particularly in children with congenital heart disease (CHD). could occur all ages higher below 1-year-old, including neonates. Various clinical manifestations IE make it difficult to prompt diagnosis appropriate management. Finding echocardiography help clinicians determine the IE. Systemic embolization...

We have established single-cell culture for human mixed hemopoietic colonies using a micromanipulator. Mononuclear cells from human umbilical cord blood were cultured at a concentration of 1 X 10(4) cells per milliliter in methylcellulose medium containing medium conditioned by phytohemagglutinin-stimulated leukocytes and erythropoietin. It was possible to identify the single hemopoietic progen...

The pontomedullary region is responsible for both the tonic and phasic reduction of muscle activity in rapid-eye-movement sleep and contributes to the control of muscle tone in waking. This study focused on determining the time course of activity in the pontomedullary systems mediating atonia. Short-train stimulations (3 0.2-ms pulses at 330 Hz) of the pons and medulla suppressed neck and hindl...