Fritz Schinkel

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Activity overview

Latest activity by Fritz Schinkel
  • Fritz Schinkel commented,

    Hi Joel, thanks for the answer. Sorry to hear, that Datameer does not use k-means++. Since with Mahout and SparkML there are two k-means-implementation on Hadoop doing the improved initiatization, ...

  • Fritz Schinkel created a post,

    Clustering results don't converge

    Hi,  for data from production lines I am applying the clustering feature of smart analytics. I tried with different numbers of clusters. Normally I would expect less cost (sum of square of distance...

  • Fritz Schinkel commented,

    Hi Joel, thanks for your further Explanation, at least I understand the implementation now. But I see no way to use it. GROUP_JACCARD_DIST is a Group aggregate function requiring a GROUP_BY and add...

  • Fritz Schinkel commented,

    Hi Joel, thanks for the explanation. Do you have any hint, which positions belong to the which set and how to guarantee the order. I just tried a,b,c,d,a,b,c,e and was surprised to get 0 since ther...

  • Fritz Schinkel created a post,

    jaccard distance

    Can anybody explain the jaccard distance function in Datameer. The documentation https://www.datameer.com/documentation/display/DAS60/GROUP_JACCARD_DIST does not really explain. What are the sets, ...

  • Fritz Schinkel commented,

    Dear all, is there any news about using built-in decision trees in Datameer. The zementis plug-in can execute within Datameer models, which have been trained somewhere else. So in the case of decis...

  • Fritz Schinkel created a post,

    Unexpected result after filtering

    In a complex workbook for twitter sentiment analysis I added a filter to reduce a list of tweets. Unexpectedly all my remaining tweets were rated positive. Instead of tweet analysis on a reduced li...

  • Fritz Schinkel created a post,

    Decision Tree

    I tried the decision tree support in Datameer smart analytics. I can enter my data for training and the sheet shows me how the trained tree predicts on the training data. I found no way to use the ...

  • Fritz Schinkel created a post,

    CrunchBase and New York Times

    I tried to create a Crunchbase connection. Datameer opens a URL http://api.crunchbase.com/v/1/company/facebook.js? which is deprecated so I get back in Datameer Failed to open 'http://static.crunc...