We investigate two new distributed routing algorithms for data networks based on simple biological "ants" that explore the network and rapidly learn good routes, using a novel variat ion of reinforcement learning. These two algor i thms are ful ly adaptive to topology changes and changes in l ink costs in the network, and have space and computational overheads that are competitive wi th tradit ...

The more successful reso lu t i on programs today owe t h e i r power in part to e f f i c i e n t r e t r i e v a l mechanisms fo r re tu rn ing l i t e r a l s that are p o t e n t i a l l y u n i f i a h l e w i th or subsumed by a given l i t e r a l . For example, the e f f i c i e n t subsumption algor i thms and the hack demodulation of [2 ] are based on one such scheme, the FPA l i s t ...

Using changes in global dynamic characteristics for detection of cracks has been a hot research topic now a days and is a source of attraction for civil, aerospace, and mechanical engineering communities in recent years. Crack in vibrating components causes a change in physical properties of a structure which in turn affects dynamic response characteristics. Therefore we have to study the dynam...

This note summarizes results from a preliminary stress analysis of several shaped driftchamber endplates using the PC-based finite-element-analysis program ALGOR. We infer from evidence presented below that both the stresses and displacements in thin shaped endplates under uniform wire load scale as 1/thickness. A rough understanding is that the stresses are primarily tension and compression in...

genetic diversity of five improved varieties (kaysari, kadi, ranger, mesmir, sea-river) and seven iranian landraces (gharayonje, amozeynadin, rahnani, tazekand, shazand, hamedani, yazdi) of alfalfa were assessed using esterase (est), peroxidase (pox), glutamate oxaloacetate transaminase (got) and malate dehydrogerase (mdh). got and mdh were monomorphic, whereas est and pox showed polymorphic ba...

in financial matters, portfolio can be interpreted as a combination or a series of investments hold by an institution or a person. portfolio optimization is one of the most important concerns of investors for maximizing the portfolio in financial markets. the formation of portfolio is a vital and critical decision for the companies.  in fact, the selection of portfolio is to specify the capital...

Genet ic algor ithms (GAs) continue to receive increased attention as general-p ur pos e met hods for search and optimization . GAs are attrac t ive for search in complex spaces where the fun ction al relati onsh ips between paramet ers and ob jective function values are of unknown , arb itrary mat hemati cal charac te r. Desp ite t heir generally robust character, typical GAs are known to fare...

Featurepointbased stereo and segment-based stereo have been intensively studied. Bu t why not region-based stereo? Region is more characteristic than point and segment. Matching between regions is easier and faster, if region segmentation is successful. Unfortunately, however, it is the fai lure to satisfy this precondit ion that has been the obstacle. Region segmentat ion in practice is subtle...

the aim of the present study was to estimate the genetic parameters and genetic trends of somatic cell score (scs) in the first 3 lactations of iranian holstein cows by random regression (rr) animal model by using restricted maximum likelihood (reml) method. the data set used in this analysis included observations of 340318 test-day records of 41526 cows in 288 herds; 89969 test-day of 11750 co...