k-Nearest Neighbors

k-Nearest Neighbors

Each digit is an 8x8 pixel patch, which when reshaped is a 64 length vector.

Distance metric: the simplest distance metric for k-Nearest Neighbors is the sum of squares error between pixel values.

For each example in the test set, calculate the distance to every other example in the training set. Identify the closest k neighbors (a good use of [login to view URL]). Pick the class which most of the neighbors belong to. Break ties in any way you wish.

Compare the true class of each member of the test set to the predicted class using k-Nearest neighbors. Report the accuracy.

Now, change the value of k. Create a table with the accuracy for k=1, k=3, k=5, and k=100, and k=500

Show a classification matrix for each run of k. You can use sklearn.metrics.confusion_matrix for this

Note which errors are more common. In what way does that match your intuitions?

do not use inbuild functions

Taidot: Machine Learning (ML)

Tietoa asiakkaasta:
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Projektin tunnus: #34060111

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