WO2017186048A1 - 展示预测模型的方法、装置及调整预测模型的方法、装置 - Google Patents
展示预测模型的方法、装置及调整预测模型的方法、装置 Download PDFInfo
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- an embodiment of the present invention provides a method for displaying a prediction model, including: acquiring at least one prediction result obtained by the prediction model for at least one prediction sample; acquiring the at least one prediction sample and the at least one prediction result. At least one decision tree training sample of the training decision tree model, wherein the decision tree model is used to fit the prediction model; using at least one Decision tree training samples to train the decision tree model; and visually present the trained decision tree model.
- the decision tree training sample acquisition module 220 can derive features of the decision tree training samples based on some or all of the features of the predicted samples. That is, the decision tree training sample acquisition module 220 can obtain the characteristics of the decision tree training samples by screening and/or further processing the features of the predicted samples.
- the decision tree training sample obtaining module 220 may further transform the feature space in which at least a part of the features of the predicted sample are located to obtain suitable decision tree training in the transformed feature space. sample.
- the obtained decision tree training samples can be made to grow a decision tree model that is easy to visually display, that is, a decision tree model adapted to be output on the display device, thereby further improving the display effect of the decision tree model.
- the decision tree training sample obtaining module 220 may transform at least a part of the features of the predicted sample, and use the transformed at least part of the feature as a feature of the decision tree training sample, and based on the corresponding predicted result. To obtain the mark of the decision tree training sample.
- the at least a portion of the features may include features that are primarily predictive of features of the predictive sample and/or features that are readily understood by the user.
- the decision tree training sample acquisition module 220 may transform the at least a portion of the features of the prediction sample in view of an expected size of the decision tree model and/or a node interpretability of the decision tree model.
- the predictive model can be trained and applied based on the high dimensional discrete feature space, thereby ensuring the performance of the predictive model.
- the feature space of the predictive model it is possible to train a decision tree model that is easier to understand and/or display, thereby helping the user to more intuitively understand the prediction mechanism of the original model core.
- statistical information such as summation, mean, variance, purchase probability, and the like of each customer age may be obtained on a training sample set that trains the prediction model or a suitable subset of the set, and such statistical information is used as a correspondence.
- the changing characteristics of the customer's age For example, the original customer age 0 to 19 years old can be converted to a 20% shopping probability; the original customer age 20 to 39 years old can be converted to 40% shopping probability; the original customer age is 40 to 59 years old, It can be converted to a shopping probability of 30%; if the original customer is over 60 years old, it can be converted to a shopping probability of 10%.
- the information amount of the model complexity such as the minimum description length can be introduced to reduce the complexity of the trained decision tree model.
- the complexity of the decision tree model can be limited by directly limiting the number of decision tree nodes and/or the number of layers.
- the storage component can be integrated with the processor, for example, by arranging the RAM or flash memory within an integrated circuit microprocessor or the like.
- the storage components can include separate devices such as external disk drives, storage arrays, or other storage devices that can be used with any database system.
- the storage component and processor may be operatively coupled or may be in communication with one another, such as through an I/O port, a network connection, etc., such that the processor can read the file stored in the storage component.
- step S310 may also be performed, for example, by the adjustment module 410, in response to the user.
- At least one predictive model training sample that trains the predictive model is adjusted for the input operations performed by the displayed decision tree model.
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Abstract
Description
Claims (30)
- 一种对预测模型进行展示的方法,包括:获取预测模型针对至少一个预测样本得到的至少一个预测结果;基于所述至少一个预测样本和所述至少一个预测结果来获取用于训练决策树模型的至少一个决策树训练样本,其中,所述决策树模型用于拟合所述预测模型;使用所述至少一个决策树训练样本来训练决策树模型;以及可视化地展示训练出的决策树模型。
- 根据权利要求1所述的方法,其中,在基于所述至少一个预测样本和所述至少一个预测结果来获取用于训练决策树模型的至少一个决策树训练样本的步骤中,将所述预测样本的至少一部分特征作为所述决策树训练样本的特征,并基于相应得到的预测结果来获取所述决策树训练样本的标记;或者在基于所述至少一个预测样本和所述至少一个预测结果来获取用于训练决策树模型的至少一个决策树训练样本的步骤中,对所述预测样本的至少一部分特征进行变换,将变换后的所述至少一部分特征作为所述决策树训练样本的特征,并基于相应得到的预测结果来获取所述决策树训练样本的标记。
- 根据权利要求2所述的方法,其中,所述预测样本的所述至少一部分特征包括所述预测样本的特征之中起主要预测作用的特征和/或易于用户理解的特征。
- 根据权利要求2所述的方法,其中,鉴于所述决策树模型的预计规模和/或所述决策树模型的节点解释性,对所述预测样本的所述至少一部分特征进行变换。
- 根据权利要求4所述的方法,其中,对所述预测样本的所述至少一部分特征进行变换的步骤包括:将所述预测样本的所述至少一部分特征之 中的至少一个特征子集分别变换为相应的至少一个变换特征子集。
- 根据权利要求5所述的方法,其中,所述变换特征子集的特征数量少于或等于变换前的相应特征子集的特征数量。
- 根据权利要求5所述的方法,其中,变换前的特征子集指示预测样本的属性信息,相应的变换特征子集指示所述属性信息的统计信息或权重信息。
- 根据权利要求2所述的方法,其中,对所述预测样本的至少一部分特征进行变换的步骤包括:将所述预测样本的所述至少一部分特征之中的至少一个离散化特征子集变换为相应的至少一个连续特征。
- 根据权利要求8所述的方法,其中,所述离散化特征子集指示预测样本的属性信息,其中,相应的连续特征指示所述属性信息关于预测模型的预测目标的统计信息;或者,相应的连续特征指示所述属性信息关于预测模型的预测目标的预测权重。
- 根据权利要求1所述的方法,其中,在获取预测模型针对至少一个预测样本得到的至少一个预测结果的步骤之前,所述方法还包括:基于训练出所述预测模型的至少一个预测模型训练样本来得到所述至少一个预测样本,并将所述至少一个预测样本输入所述预测模型。
- 根据权利要求1所述的方法,其中,在使用所述至少一个决策树训练样本来训练决策树模型的步骤中,在预设的关于决策树模型的预计规模的正则化项下进行决策树模型的训练。
- 根据权利要求11所述的方法,其中,所述正则化项用于限制决策树模型的节点数量、层数和/或节点样本最小阈值。
- 根据权利要求1所述的方法,其中,可视化地展示训练出的决策树模型的步骤包括:通过剪枝处理来可视化地展示训练出的决策树模型,其中,在剪枝处理中剪掉的节点不被展示或被隐藏展示。
- 一种调整预测模型的方法,包括:使用权利要求1至13中任何一项所述的方法对所述预测模型进行展示;响应于用户针对所展示的决策树模型执行的输入操作,调整训练出所述预测模型的至少一个预测模型训练样本;以及使用调整后的至少一个预测模型训练样本来重新训练所述预测模型。
- 一种对预测模型进行展示的装置,包括:预测结果获取模块,用于获取预测模型针对至少一个预测样本得到的至少一个预测结果;决策树训练样本获取模块,用于基于所述至少一个预测样本和所述至少一个预测结果来获取用于训练决策树模型的至少一个决策树训练样本,其中,所述决策树模型用于拟合所述预测模型;决策树模型训练模块,用于使用所述至少一个决策树训练样本来训练决策树模型;以及展示模块,用于可视化地展示训练出的决策树模型。
- 根据权利要求15所述的装置,其中,所述决策树训练样本获取模块将所述预测样本的至少一部分特征作为所述决策树训练样本的特征,并基于相应得到的预测结果来获取所述决策树训练样本的标记;或者所述决策树训练样本获取模块对所述预测样本的至少一部分特征进行变换,将变换后的所述至少一部分特征作为所述决策树训练样本的特征,并基于相应得到的预测结果来获取所述决策树训练样本的标记。
- 根据权利要求16所述的装置,其中,所述预测样本的所述至少一部分特征包括所述预测样本的特征之中起主要预测作用的特征和/或易于用户理解的特征。
- 根据权利要求16所述的装置,其中,所述决策树训练样本获取模块鉴于所述决策树模型的预计规模和/或所述决策树模型的节点解释性,对所述预测样本的所述至少一部分特征进行变换。
- 根据权利要求18所述的装置,其中,所述决策树训练样本获取模块将所述预测样本的所述至少一部分特征之中的至少一个特征子集分别变换为相应的至少一个变换特征子集。
- 根据权利要求19所述的装置,其中,所述变换特征子集的特征数量少于或等于变换前的相应特征子集的特征数量。
- 根据权利要求19所述的装置,其中,变换前的特征子集指示预测样本的属性信息,相应的变换特征子集指示所述属性信息的统计信息或权重信息。
- 根据权利要求16所述的装置,其中,所述决策树训练样本获取模块将所述预测样本的所述至少一部分特征之中的至少一个离散化特征子集变换为相应的至少一个连续特征。
- 根据权利要求22所述的装置,其中,所述离散化特征子集指示预测样本的属性信息,其中,相应的连续特征指示所述属性信息关于预测模型的预测目标的统计信息;或者,相应的连续特征指示所述属性信息关于预测模型的预测目标的预测权重。
- 根据权利要求15所述的装置,其中,所述预测结果获取模块基于训练出所述预测模型的至少一个预测模型训练样本来得到所述至少一个预测样本,并将所述至少一个预测样本输入所述预测模型,以得到所述至少一个预测结果。
- 根据权利要求15所述的装置,其中,所述决策树模型训练模块在预设的关于决策树模型的预计规模的正则化项下进行决策树模型的训练。
- 根据权利要求25所述的装置,其中,所述正则化项用于限制决策树模型的节点数量、层数和/或节点样本最小阈值。
- 根据权利要求15所述的装置,其中,所述展示模块通过剪枝处理来可视化地展示训练出的决策树模型,在剪枝处理中剪掉的节点不被展示或被隐藏展示。
- 一种调整预测模型的装置,包括:权利要求15至27中任何一项所述的对预测模型进行展示的装置,用于对所述预测模型进行展示;调整模块,用于响应于用户针对所展示的决策树模型执行的输入操作,调整训练出所述预测模型的至少一个预测模型训练样本;以及预测模型训练模块,用于使用调整后的至少一个预测模型训练样本来重新训练所述预测模型。
- 一种对预测模型进行展示的计算装置,包括存储部件和处理器,存储部件中存储有计算机可执行指令集合,当所述计算机可执行指令集合被所述处理器执行时,执行下述步骤:获取预测模型针对至少一个预测样本得到的至少一个预测结果;基于所述至少一个预测样本和所述至少一个预测结果来获取用于训练决策树模型的至少一个决策树训练样本,其中,所述决策树模型用于拟合所述预测模型;使用所述至少一个决策树训练样本来训练决策树模型;以及可视化地展示训练出的决策树模型。
- 一种调整预测模型的计算装置,包括存储部件和处理器,存储部件中存储有计算机可执行指令集合,当所述计算机可执行指令集合被所述处理器执行时,执行下述步骤:获取预测模型针对至少一个预测样本得到的至少一个预测结果;基于所述至少一个预测样本和所述至少一个预测结果来获取用于训练决策树模型的至少一个决策树训练样本,其中,所述决策树模型用于拟合所述预测模型;使用所述至少一个决策树训练样本来训练决策树模型;可视化地展示训练出的决策树模型;响应于用户针对所展示的决策树模型执行的输入操作,调整训练出所述预测模型的至少一个预测模型训练样本;以及使用调整后的至少一个预测模型训练样本来重新训练所述预测模型。
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| CN109767269A (zh) * | 2019-01-15 | 2019-05-17 | 网易(杭州)网络有限公司 | 一种游戏数据的处理方法和装置 |
| CN110196945A (zh) * | 2019-05-27 | 2019-09-03 | 北京理工大学 | 一种基于LSTM与LeNet融合的微博用户年龄预测方法 |
| CN110322334A (zh) * | 2018-03-29 | 2019-10-11 | 上海麦子资产管理集团有限公司 | 信用评级方法及装置、计算机可读存储介质、终端 |
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| CN105930934B (zh) | 2018-08-14 |
| EP3451250A4 (en) | 2019-10-02 |
| CN105930934A (zh) | 2016-09-07 |
| US20190147350A1 (en) | 2019-05-16 |
| EP3451250A1 (en) | 2019-03-06 |
| CN108960514A (zh) | 2018-12-07 |
| US11562256B2 (en) | 2023-01-24 |
| CN108960514B (zh) | 2022-09-06 |
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