“ RTextTools” create_matrix出现错误 [英] "RTextTools" create_matrix got an error

问题描述

我正在运行RTextTools软件包来构建文本分类模型。

I was running RTextTools package to build a text classification model.

当我准备预测数据集并尝试将其转换为矩阵时。我收到错误消息：

And when I prepare the prediction dataset and tried to transform it in to matrix. I got error as:

Error in if (attr(weighting, "Acronym") == "tf-idf") weight <- 1e-09 : 
  argument is of length zero

我的代码如下：

table<-read.csv("traintest.csv",header = TRUE)
dtMatrix <- create_matrix(table["COMMENTS"])
container <- create_container(dtMatrix, 
                              table$LIKELIHOOD_TO_RECOMMEND, 
                              trainSize=1:5000,testSize=5001:10000, 
                              virgin=FALSE)
model <- train_model(container, "SVM", kernel="linear", cost=1)

predictionData<-read.csv("rest.csv",header = TRUE)
**predMatrix <- create_matrix(predictionData["COMMENTS"],originalMatrix=dtMatrix)**
Error in if (attr(weighting, "Acronym") == "tf-idf") weight <- 1e-09 : 
      argument is of length zero

错误由最后一个代码给出（粗体）
我尝试在Google上搜索，但没有找到一个明确的解决方案。

The error was given by the last code (bold) I tried search on google but didn't see one clear solution.

谢谢

推荐答案

运行此：

trace("create_matrix",edit=T)

在弹出的源代码框中，第42行将拼写错误的缩写。将 A更改为 a并点击保存-之后应该可以正常工作。

In the source code box that pops up, line 42 will have a misspelling of the word "acronym". Change the "A" to an "a" and hit "Save" - it should work fine after that.

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