Evaluation of Advanced Retrieval Techniques in an Experimental Online Catalog

Online Public Access Catalog Retrieval Structures and Techniques: With Reference to Recent Developments in the United States and Great Britain

Online Evaluation for Information Retrieval

Online evaluation is one of the most common approaches to measure the effectiveness of an information retrieval system. It involves fielding the information retrieval system to real users, and observing these users’ interactions in-situ while they engage with the system. This allows actual users with real world information needs to play an important part in assessing retrieval quality. As such,...

Active Noise Cancellation using Online Wavelet Based Control System: Numerical and Experimental Study

Reaction wheels (RWs) used for attitude control of space vehicle systems usually encounter with undesired wide band noises. These noises which significantly affect the performance of regulator controller must tune the review or review rate of RWs. According to wide frequency band of noises in RWs the common approaches of noise cancellation cannot conveniently reduce the effects of the noise. Th...

Evaluation Issues in Information Retrieval

Evaluation techniques are critical to research in all areas of science and engineering. The major evaluation techniques used in information retrieval today were put in place over 20 years ago when Cyril Cleverdon’s Cranfield projects started an evaluation pattern that still largely dominates the field, that is, using recall/precision measures and using one of the standard test collections. Wher...

Indexing large collections of small text records for ranked retrieval

The MARIAN online public access catalog system at Virginia Tech has been developed to apply advanced information retrieval methods and object-oriented technology to the needs of library patrons. We give a description of our data model, design, processing, data representations, and retrieval operation. By identifying objects of interest during the indexing process, storing them according to our ...