Massive Data MapReduce Fingerprint Discriminant Algorithm Based on Hadoop

The problem of effectively identifying of joining the network again is able to obtain the actual interest in the mobile business. The biggest problem of identifying the joining the network again is that even if a small amount of data will also require a lot of computing resources for comparison algorithm. This article using Hadoop technology proposed Hadoop's MapReduce technology heavy network fingerprint discriminant algorithm, which greatly improves the efficiency of heavy network fingerprint algorithm discrimination, the the discriminant algorithm proposed new higher discrimination accuracy than the original discrimination algorithm.

Reversal following Errorless Discrimination Learning

Pigeons were trained on a successive red-green discrimination by either a Late-Constant or Early-Progressive procedure. Following training on the original discrimination, the stimuli were reversed after which there was a return to the original discrimination. All three of the Late-Constant pigeons learned the discrimination with errors and two of the three Early-Progressive pigeons learned the discrimination errorlessly. Responding to the reversed negative stimulus occurred at essentially the same rate for Late-Constant and Early-Progressive subjects, with the exception of one Early-Progressive subject that took substantially more exposure. These results indicate that negative stimulus after errorless learning retards development of responding more than the negative stimulus following errorful learning.

Pigeons Learn the Concept of an ‘A’

Pigeons learned to discriminate between ‘A’s and ‘2’s in eighteen different typefaces. They subsequently showed excellent transfer to twenty-two typefaces that they had not previously seen; one pigeon was tested with handwritten letters and responded correctly to them also. Pigeons' responses to ‘A’s and ‘2’s with parts removed suggested that their performance was controlled by several features, none of which alone could be considered necessary or sufficient. A test in which birds were shown other letters of the alphabet supported this conclusion. It appears that the original discrimination was learned as what Ryle calls a ‘polymorphous concept’.

Effect of auditory neocortex ablation on pitch perception in the cat

Cats which received one- or two-stage bilateral ablations of auditory cortex were compared to unoperated cats on a test involving the discrimination of increases (1.2 kHz) from decreases (0.8 kHZ) in the frequency of ongoing 1.0-kHz tone pulses. Whereas two-stage cats exhibited more evidence of postoperative retention for the original task than did one-stage cats, both groups relearned the discrimination in approximately the same number of trials as normal cats. Individual differences in difficulty of relearning apparently reflected the degree of undercutting of the polysensory association areas of the suprasylvian and lateral gyri. Following retraining, all cats received two discrimination transfer tests. The first test was identical to the original dis crimination problem in all respects except that different frequency values were substituted for the original set (i.e., 1.6-kHz tones alternating with either 2.0- or 1.2-kHz signals). Whereas both unoperated and two-stage cats had difficulty discriminating the new positive from negative trials, the one-stage cats exhibited a significant tendency to continue responding to changes invoving 1.2-kHz tones in the same manner as in the original discrimination task. In the second test the cats were asked to discriminate the original 1.2- and 0.8-kHz tones against a silent background. Both operated and unoperated cats performed significantly above chance on this test. These results suggest that the cats solved the original discrimination on the basis of absolute frequency cues rather than the directionality of frequency changes. The significance of these findings are discussed in relation to current concepts of the functional capacity of auditory decorticate animals.

Specificity of Transfer of a Learned Response by Intracisternal Injection of Brain Extract from Trained Rats: Negative Findings

One group of rats was trained on a discrimination task while another group received no training. Brain extract containing RNA was prepared from the brains of these rats and injected intracisternally into naive rats. The naive rats were then retrained on the original discrimination task. No differences were found between the performances of the tats injected with “trained” extract, “untrained” extract, or saline solution.

Incidental Cue Learning in Rats

Continuity theories of discrimination learning appear to say that animals learn equally about all cues impinging upon their receptors; noncontinuity theories that they learn about only one cue at a time. Experiment I showed that neither of these positions is correct: rats trained to attend to one cue learned less about a subsequently introduced incidental cue than rats given no such pretraining; but attention to one cue did not totally prevent learning about the other. A second experiment established that if rats are trained with one cue, and a second cue is then also made relevant, the amount learned about this second cue varies directly with (a) the abruptness with which it is introduced, and (b) the difficulty of the original discrimination.