A Self-configuring Agent-Based Document Indexing System

2005 ◽  
pp. 624-627 ◽  
Author(s):  
L. Peng ◽  
R. Collier ◽  
A. Mur ◽  
D. Lillis ◽  
F. Toolan ◽  
...  
Keyword(s):  
Agent Based ◽  
Document Indexing ◽  
Indexing System

scholarly journals Computer-aided Document Indexing System

2005 ◽  
Vol 13 (4) ◽  
pp. 299 ◽  
Author(s):  
Mladen Kolar ◽  
Igor Vukmirovi� ◽  
Bojana Dalbelo Ba�i� ◽  
Jan �najder
Keyword(s):  
Document Indexing ◽  
Indexing System ◽  
Computer Aided

Effects of Terms Recognition Mistakes on Requests Processing for Interactive Information Retrieval

2012 ◽  
Vol 2 (3) ◽  
pp. 19-35 ◽  
Author(s):  
Mohamed Nazih Omri
Keyword(s):  
Experimental Study ◽  
Information Retrieval ◽  
Interactive Information Retrieval ◽  
Document Indexing ◽  
Indexing System ◽  
User Request ◽  
Document Collection ◽  
Request Processing ◽  
Index Terms ◽  
Indexing Technique

In this work the author proposes to describe a new model of information retrieval. They studied the effects of using weighted index terms recognition mistakes in a document indexing system and evaluate indexing performance when short and long requests are used. The effect of weighting index terms in the document collection and in the requests is analyzed. Given the typical requests submitted to term indexing system, it seems easy to consider that the effects of term recognition mistakes in user requests must be severely destructive on the effectiveness of the system. The experimental study reported in this paper shows that the use of classical term Indexing technique for processing this kind of request is robust to considerably high levels of term recognition mistakes, in particular for long requests. Moreover, both standard pertinence feedback and pseudo pertinence feedback can be employed to improve the effectiveness of user request processing.

Total etch dentin bonding systems: scanning electron microscopy of the resin-dentin hybrid layer

1992 ◽  
Vol 50 (2) ◽  
pp. 1092-1093
Author(s):  
Jorge Perdigao
Keyword(s):  
Composite Resin ◽  
Mechanical Interlocking ◽  
Hybrid Layer ◽  
Agent Based ◽  
Dentin Bonding ◽  
Acid Agent ◽  
Bond Strengths ◽  
Main Component ◽  
Bonding Systems ◽  
New Generation

In 1955, Buonocore introduced the etching of enamel with phosphoric acid. Bonding to enamel was created by mechanical interlocking of resin tags with enamel prisms. Enamel is an inert tissue whose main component is hydroxyapatite (98% by weight). Conversely, dentin is a wet living tissue crossed by tubules containing cellular extensions of the dental pulp. Dentin consists of 18% of organic material, primarily collagen. Several generations of dentin bonding systems (DBS) have been studied in the last 20 years. The dentin bond strengths associated with these DBS have been constantly lower than the enamel bond strengths. Recently, a new generation of DBS has been described. They are applied in three steps: an acid agent on enamel and dentin (total etch technique), two mixed primers and a bonding agent based on a methacrylate resin. They are supposed to bond composite resin to wet dentin through dentin organic component, forming a peculiar blended structure that is part tooth and part resin: the hybrid layer.

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