dummy-data

问题 So I'm trying to create dummy variables to attach to a data frame based on whether or not a specific column of the frame has specific words in it. The column would look something like this: dumcol = c("good night moon", "good night room", "good morning room", "hello moon") and I'd be creating dummy variables based on which words are contained in each row, e.g. for the first one, it contains "good", "night", and "moon" , but not "room", "morning" or "hello" . The way I've been going about it

问题 So I'm trying to create dummy variables to attach to a data frame based on whether or not a specific column of the frame has specific words in it. The column would look something like this: dumcol = c("good night moon", "good night room", "good morning room", "hello moon") and I'd be creating dummy variables based on which words are contained in each row, e.g. for the first one, it contains "good", "night", and "moon" , but not "room", "morning" or "hello" . The way I've been going about it

问题 So I'm trying to create dummy variables to attach to a data frame based on whether or not a specific column of the frame has specific words in it. The column would look something like this: dumcol = c("good night moon", "good night room", "good morning room", "hello moon") and I'd be creating dummy variables based on which words are contained in each row, e.g. for the first one, it contains "good", "night", and "moon" , but not "room", "morning" or "hello" . The way I've been going about it

问题 So I'm trying to create dummy variables to attach to a data frame based on whether or not a specific column of the frame has specific words in it. The column would look something like this: dumcol = c("good night moon", "good night room", "good morning room", "hello moon") and I'd be creating dummy variables based on which words are contained in each row, e.g. for the first one, it contains "good", "night", and "moon" , but not "room", "morning" or "hello" . The way I've been going about it

问题 Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 1 year ago . Improve this question I'm creating a temporary GraphQL backend, that should serve mocked data. E.g. I need ~500 objects of the model Person (with firstName, lastName, email, country, etc), where the properties shouldn't change on each request. Is there any library where it's possible to

问题 when I try to load a caffe model with OpenCV 3.4.3, I get the error what(): OpenCV(3.4.3) /home/schneider/libs/opencv-3.4.3/modules/dnn/src/dnn.cpp:412: error: (-2:Unspecified error) Can't create layer "DummyData1" of type "DummyData" in function 'getLayerInstance'* The layer in the prototxt file looks like this: layer { name: "DummyData1" type: "DummyData" top: "DummyData1" dummy_data_param { shape { dim: 1 dim: 32 dim: 125 dim: 100 } } } It appears that the layer is missing in OpenCV. The

问题 I am trying to efficiently create a binary dummy variables (1/0) in my data set based on whether or not one or more of 7 variables (col9-15) in the data set take on a specific value (35), but I don't want to test all columns. While as.numeric is ideal usually, I can only get it to work with one column at a time: data$indicator <- as.numeric(data$col1 == 35) Any idea how I can modify the above code so that if any of data$col9 - data$col15 are "35" then my indicator variable takes on a 1?

问题 Currently development team is done their application, and as a tester needs to insert 1000000 records into the 20 tables, for performance testing. I gone through the tables and there is relationship between all the tables actually. To insert that much dummy data into the tables, I need to understand the application completely in very short span so that I don't have the dummy data also by this time. In SQL server is there any way to insert this much data insertion possibility. please share the

问题 I have a quite big data frame in R with two columns. I am trying to make out of the Code column ( factor type with 858 levels) the dummy variables. The problem is that the R Studio always crashed when I am trying to do that. > str(d) 'data.frame': 649226 obs. of 2 variables: $ User: int 210 210 210 210 269 317 317 317 317 326 ... $ Code : Factor w/ 858 levels "AA02","AA03",..: 164 494 538 626 464 496 435 464 475 163 ... The User column is not unique, meaning that there can be several rows

问题 I have a list of data indicating attendance to conferences like this: Event Participant ConferenceA John ConferenceA Joe ConferenceA Mary ConferenceB John ConferenceB Ted ConferenceC Jessica I would like to create a binary indicator attendance matrix of the following format: Event John Joe Mary Ted Jessica ConferenceA 1 1 1 0 0 ConferenceB 1 0 0 1 0 ConferenceC 0 0 0 0 1 Is there a way to do this in R? 回答1: Assuming your data.frame is called "mydf", simply use table : > table(mydf)