5.15.17

Well, the weekend ended on a sad, down note. Having problems getting motivated.

7:00 – 8:00 Research

  • Filled out CI 2017 form
  • Started HCIC registration
  • Started PhD review

8:30 – 8:00PM BRC

  • Run clustering on t-SNE again with Bob’s settings. It’s…. OK. We think that MDS and LLE are better for now, but there are almost certainly hyper parameter tweaking that we can do.
  • Here’s n example of actual data with lots of error between runs: n5_clusters_lle_05-15-17but by adjusting the hyperparameter ‘neighbors’ from 5 (above) to 10 (below), we get a completely different result: n10_clusters_lle_05-15-17Here, you can see that no cluster shared its nodes with any other cluster. That’s what we want. Stable, but with good granularity.
  • We can play some games on the clustering by seeing what happens when we remove some columns from our data. Here’s the above data with gender included and excluded: gender_and_nogenderIt’s possible to see that several items that were in cluster (0) distribute out when gender don’t override associated clusters.
  • Had a weird issue where LLE clustering on our test data that worked with neighbors = 10, now needs neighbors > 12 to work. Not sure why that’s happening.
  • Need to write up a report generator that does the following:  For each cluster in the set that we are comparing:

    size
    stable/total
    list of stable

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