learn_sampset_boxT_learn_sampset_boxLearnSampsetBoxLearnSampsetBoxlearn_sampset_box (算子)

名称

learn_sampset_boxT_learn_sampset_boxLearnSampsetBoxLearnSampsetBoxlearn_sampset_box — 用一个数据集训练分类器。

警告

learn_sampset_boxlearn_sampset_boxLearnSampsetBoxLearnSampsetBoxLearnSampsetBoxlearn_sampset_box 已过时，仅出于向后兼容性考虑而保留。新应用程序应使用 MLP、SVM、KNN 或 GMM 算子替代。

签名

描述

learn_sampset_boxlearn_sampset_boxLearnSampsetBoxLearnSampsetBoxLearnSampsetBoxlearn_sampset_box trains the classifier with data for the key SampKeySampKeySampKeySampKeysampKeysamp_key (see read_sampsetread_sampsetReadSampsetReadSampsetReadSampsetread_sampset). The training sequence is terminated at least after NSamplesNSamplesNSamplesNSamplesNSamplesnsamples examples. If NSamplesNSamplesNSamplesNSamplesNSamplesnsamples is bigger than the number of examples in SampKeySampKeySampKeySampKeysampKeysamp_key, then a cyclic start at the beginning occurs. If the error underpasses the value StopErrorStopErrorStopErrorStopErrorstopErrorstop_error, then the training sequence is prematurely terminated. StopErrorStopErrorStopErrorStopErrorstopErrorstop_error is calculated with N / ErrorN. Whereby N means the number of examples which were wrong classified during the last ErrorNErrorNErrorNErrorNerrorNerror_n training examples. Typically ErrorNErrorNErrorNErrorNerrorNerror_n is the number of examples in SampKeySampKeySampKeySampKeysampKeysamp_key and NSamplesNSamplesNSamplesNSamplesNSamplesnsamples is a multiple of it. If you want a data set with 100 examples to run 5 times at most and if you want it to terminate with an error lower than 5%, then the corresponding values are NSamplesNSamplesNSamplesNSamplesNSamplesnsamples = 500, ErrorNErrorNErrorNErrorNerrorNerror_n = 100 and StopErrorStopErrorStopErrorStopErrorstopErrorstop_error = 0.05. A protocol of the training activity is going to be written in file OutfileOutfileOutfileOutfileoutfileoutfile。

执行信息

• 多线程类型：可重入（与非独占算子并行运行）。
• 多线程作用域：全局（可从任何线程调用）。
• 未采用并行化处理。

此算子修改后续输入参数的状态：

• ClassifHandleClassifHandleClassifHandleClassifHandleclassifHandleclassif_handle

在执行此算子时，若该参数值需在多个线程间使用，则必须对其访问进行同步。

参数

结果

learn_sampset_boxlearn_sampset_boxLearnSampsetBoxLearnSampsetBoxLearnSampsetBoxlearn_sampset_box 返回 2 ( H_MSG_TRUE )。 An exception is raised if key SampKeySampKeySampKeySampKeysampKeysamp_key does not exist or there are problems while opening the file.

可能的前趋

create_class_boxcreate_class_boxCreateClassBoxCreateClassBoxCreateClassBoxcreate_class_box

可能的后继

test_sampset_boxtest_sampset_boxTestSampsetBoxTestSampsetBoxTestSampsetBoxtest_sampset_box, enquire_class_boxenquire_class_boxEnquireClassBoxEnquireClassBoxEnquireClassBoxenquire_class_box, write_class_boxwrite_class_boxWriteClassBoxWriteClassBoxWriteClassBoxwrite_class_box, close_class_boxclose_class_boxCloseClassBoxCloseClassBoxCloseClassBoxclose_class_box, clear_sampsetclear_sampsetClearSampsetClearSampsetClearSampsetclear_sampset

另见

test_sampset_boxtest_sampset_boxTestSampsetBoxTestSampsetBoxTestSampsetBoxtest_sampset_box, enquire_class_boxenquire_class_boxEnquireClassBoxEnquireClassBoxEnquireClassBoxenquire_class_box, learn_class_boxlearn_class_boxLearnClassBoxLearnClassBoxLearnClassBoxlearn_class_box, read_sampsetread_sampsetReadSampsetReadSampsetReadSampsetread_sampset

模块

基础