The problem deals with learning {−1, +1}-valued functions from random labeled examples in the presence of random noise in the labels. In the random classification noise model of of Angluin and Laird [1] the label of each example given to the learning algorithm is flipped randomly and independently with some fixed probability η called the noise rate. The model is the extension of Valiant’s PAC m...

Zanvil Alexander Cohn, an editor of this Journal since 1973, died suddenly on June 28, 1993. Cohn is best known as the father of the current era of macrophage biology. Many of his scientific accomplishments are recounted here, beginning with seminal studies on the granules of phagocytes that were performed with his close colleague and former editor of this Journal, James Hirsch. Cohn and Hirsch...

The term lexical approach was introduced in 1993 by Michael Lewis, who observed that "language consists of grammaticalized lexis, not lexicalised grammar" (The Lexical Approach, 1993).

The passing of Joshua Leibowitz on 10 July 1993 closed a long and distinguished chapter in the history of medicine. His particular blend of medical, linguistic and historical scholarship was representative of that Baltic-Jewish tradition of learning which contributed so much to European culture before its dispersal and decimation by the Nazi horror. He will be widely mourned by the history of m...

The passing of Joshua Leibowitz on 10 July 1993 closed a long and distinguished chapter in the history of medicine. His particular blend of medical, linguistic and historical scholarship was representative of that Baltic-Jewish tradition of learning which contributed so much to European culture before its dispersal and decimation by the Nazi horror. He will be widely mourned by the history of m...

In 1993 LEP performed a scan at three energy points around the Z 0 mass, with the primary aim of substantially improving the errors on M Z and ? z. The results of the preliminary lineshape analyses of the 4 LEP experiments are presented here, together with the combined LEP averages. The Z 0 mass and width are determined as M Z = 91:1899 0:0017 exp 0:004 lep Gev and ? z = 2:4971 0:0027 exp 0:002...

an excellent article on this competition; a companion article describes two of the top finishers (Congdon et al. 1993). The second competition attracted even more competitors, and the sophistication of the hardware and software systems seemed to have grown geometrically. An article by Ilah Nourbakhsh (Nourbakhsh et al. 1993) describes some of the top teams from the competition, the strategies t...

Backnanger Jahrbuch. Beiträge zur Geschichte von Stadt und Umgebung, Bd. 2 (1993/94) (hrsg. der Backnang in Zsarb. mit dem Heimat- Kunstverein Backnang), (Stroh) 1993. 212 S., Abb.

This research was conducted to investigate the relationships between soil(organic matter, potassium, phosphorous, sodium, fine gravel, soil texture, EC, lime,gypsum, nitrogen) and environmental (elevation, slope) factors with distribution ofvegetation types in rangelands of Sabzdasht, located in Bafgh, Yazd province at 2012. Forthis purpose, four vegetation types were selected as follows: Artem...