On the suitability of Prototype Selection methods for kNN classification with distributed data

In the current Information Age, data production and processing demands are ever increasing. This has motivated the appearance of large-scale distributed information. This phenomenon also applies to Pattern Recognition so that classic and common algorithms, such as the k-Nearest Neighbour, are unable to be used. To improve the efficiency of this classifier, Prototype Selection (PS) strategies can be used. Nevertheless, current PS algorithms were not designed to deal with distributed data, and their performance is therefore unknown under these conditions. This work is devoted to carrying out an experimental study on a simulated framework in which PS strategies can be compared under classical conditions as well as those expected in distributed scenarios. Our results report a general behaviour that is degraded as conditions approach to more realistic scenarios. However, our experiments also show that some methods are able to achieve a fairly similar performance to that of the non-distributed scenario. Thus, although there is a clear need for developing specific PS methodologies and algorithms for tackling these situations, those that reported a higher robustness against such conditions may be good candidates from which to start.

The development and evaluation of a prototype grade severity rating system. Final report.

Federal Highway Administration, Washington, D.C.

Fixed-cone valve prototype tests, final series, New Melones Dam, California /

"August 1984."

Prototype tidal data analysis for Mississippi Sound and adjacent areas /

This is a photocopy reproduction.

Floating Breakwater Prototype Test Program: Seattle, Washington /

Includes abstract.

A zero-relative-velocity belt skimmer, Stage II : Confirming tests and prototype design /

Final report, issued May 1977.

Kansas nonmonetary expert system prototype /

"Contract number 99-7-4646-04-142-01."

Evaluation of the prototype Eurosid dummy and comparison with the U.S. SID. Final report.

Mode of access: Internet.

Impact tests of human subjects using a prototype air bag restraint system. Final report.

National Highway Traffic Safety Administration, Washington, D.C.

Evaluation of a prototype magnetohydrodynamic angular acceleration transducer. Final report.

Mode of access: Internet.

Development of a prototype service-life indicator for organic vapor respirators /

Mode of access: Internet.

The Adamus exul of Grotius, or, The prototype of Paradise lost /

Dedicated to John A. Heraud, then editor of the Monthly magazine, which published a portion of this translation in the issue for October, 1839.

A prototype binary image scaling facility /

"UILU-ENG 84 1703"--Cover.

Mutual consistency maintenance in a prototype data traffic management system /

"UILU-ENG 83-1724."--Cover.

Prototype scale mooring load and transmission tests for a floating tire breakwater /

Prototype scale tests of the mooring load and wave transmission characteristics of a floating tire breakwater were conducted in the large wave tank at the Coastal Engineering Research Center. Standard Goodyear Tire and Rubber Co. 18-tire modules connected to form breakwaters, 4 and 6 modules (8.5 and 12.8 meters, 28 and 42 feet) wide in the direction of wave advance, were tested in water depths of 2 and 4 meters (6.56 and 13.12 feet). Monochromatic waves with a 2.64- to 8.25-second period range and heights up to 1.4 meters (4.6 feet) were used in the tests. Test results indicate that wave transmission is mainly a function of the breakwater width to incident wavelength ratio with a slight dependence on the incident wave height. However, the mooring forces are mainly a function of the incident wave height with only a slight dependence on the incident wavelength and breakwater width. Recommended design curves for the wave transmission coefficient versus breakwater width to wavelength ratio and mooring load as a function of incident wave height are presented. (Author).