调用rCBA:: fpgrowth :方法fpgrowth with signature (DDI)[[Ljava/lang/String；not found ]时出错

Question

我用FP-Growth算法写了下面的R代码：

fpgabdata <- read.csv('../Agen Biasa.csv', header = FALSE)    
train <- sapply(fpgabdata, as.factor)    
train <- data.frame(train, check.names = TRUE)    
txns <- as(train,"transactions")    
abrulesfpg = rCBA::fpgrowth(txns, support = 0.25, confidence = 0.5, maxLength = 10, consequent = NULL, verbose = TRUE, parallel = TRUE)

但我得到以下错误：

Error in .jcall(jPruning, "[[Ljava/lang/String;", "fpgrowth", support,  :     
  method fpgrowth with signature (DDI)[[Ljava/lang/String; not found    

以下是我的数据：

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Answer 1

您看到此错误的原因是，rCBA中FP-growth算法的当前实现要求您为结果(右侧)指定一个值。

例如，假设你有合理的支持和信心阈值，下面的方法应该有效：

abrulesfpg = rCBA::fpgrowth(
    txns, 
    support = 0.25, 
    confidence = 0.5, 
    maxLength = 10, 
    consequent = "SPIRULINA", 
    verbose = TRUE, 
    parallel = TRUE
)

我知道操作员现在可能已经发现了这一点，但我已经回答了这个问题，以防其他人遇到同样的错误。