منابع مشابه
Drifting and Tunneling
The drill & blast method is still the most typical method for medium to hard rock conditions. It can be applied to a wide range of rock conditions. Some of its features include versatile equipment, fast start-up and relatively low capital cost tied to the equipment. On the other hand, the cyclic nature of the drill & blast method requires good work site organization. Blast vibrations and noise ...
متن کاملEvolution with Drifting Targets
We consider the question of the stability of evolutionary algorithms to gradual changes,or drift, in the target concept. We define an algorithm to be resistant to drift if, forsome inverse polynomial drift rate in the target function, it converges to accuracy 1 − ǫwith polynomial resources, and then stays within that accuracy indefinitely, except withprobability ǫ at any one tim...
متن کاملThe drifting human genome.
COMMENTARY. For the article ‘‘The drifting human genome,’’ by Jianzhi Zhang, which appeared in issue 51, December 18, 2007, of Proc Natl Acad Sci USA (104:20147–20148; first published December 10, 2007; 10.1073 pnas.0710524105), the authors note that, due to a printer’s error, the DOI appeared incorrectly. The DOI 10.1073/pnas.0710524105 should have appeared as 10.1073/ pnas.0710524104. The onl...
متن کاملAdaptation to Drifting Concepts
Most of supervised learning algorithms assume the stability of the target concept over time. Nevertheless in many real-user modeling systems, where the data is collected over an extended period of time, the learning task can be complicated by changes in the distribution underlying the data. This problem is known in machine learning as concept drift. The main idea behind Statistical Quality Cont...
متن کاملDrifting with Claudio
Received: 27 September 2005 Revised: 28 September 2005 Accepted: 29 September 2005 I first met Claudio in Oslo around 1980. Like so many others we met because of Kristen Nygaard. At this time Claudio spent some months at the University of Oslo as a visiting scholar doing research (together with Leslie Schneider) on the practical impacts of the ‘data agreements’ between the Norwegian trade union...
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ژورنال
عنوان ژورنال: The Iowa Review
سال: 1996
ISSN: 0021-065X,2330-0361
DOI: 10.17077/0021-065x.4575