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mhahsler / streamMOA

Interface for data stream clustering algorithms implemented in the MOA (Massive Online Analysis) framework.
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question about centers #6

Open sherry122232 opened 2 years ago

sherry122232 commented 2 years ago

Hi! I want to get the value of the distance between the points to the closest center(before create a new center).

this is the part of my code:

stream <- DSD_ReadCSV(file = "mds40_ay4_ba1.csv", header = TRUE) data <- read.csv("mds40_ay4_ba1.csv", header = TRUE) data <- data.matrix(data) reset_stream(stream) ct <- DSC_ClusTree(horizon = 180, maxHeight = 8, lambda = NULL, k = NULL) maxDimension <- 1 eps <- 0.029

layout(matrix(c(1,2,2,3,4,4), nrow = 2, ncol = 3, byrow = TRUE)) Diag1<-0 wasserp2d01 <- numeric(9) streamProgress <- integer(9) newvalue<-0 for (i in 1:16) { update(ct, stream, 400) centers <- data.matrix(na.omit(get_centers(ct, type = "micro")))

And it only gives me the value of all the centers. Could you give me some advice to change it? Thanks so much!

mhahsler commented 2 years ago

I am not quite sure I understand your question. Data stream clustering algorithms only keep centers and not the points. You would need to calculate the distance yourself using dist() in package proxy.

sherry122232 commented 2 years ago

Thanks a lot. That helps me.

Shuyang Wang

------------------ Original ------------------ From: Michael Hahsler @.> Date: Thu, Jun 9, 2022 9:43 AM To: mhahsler/streamMOA @.> Cc: shuyang wang @.>, Author @.> Subject: Re: [mhahsler/streamMOA] question about centers (Issue #6)

I am not quite sure I understand your question. Data stream clustering algorithms only keep centers and not the points. You would need to calculate the distance yourself using dist() in package proxy.

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