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new fe422ae Oracle 23ai blog post (add PCA plot)
fe422ae is described below
commit fe422ae9d356baa10a9a9c9e7a91f3f0f9fa3b0c
Author: Paul King <pa...@asert.com.au>
AuthorDate: Mon Jul 1 17:13:48 2024 +1000
Oracle 23ai blog post (add PCA plot)
---
site/src/site/blog/groovy-oracle23ai.adoc | 25 +++++++++++++++++++++---
site/src/site/blog/img/iris_closest10points.png | Bin 0 -> 110968 bytes
2 files changed, 22 insertions(+), 3 deletions(-)
diff --git a/site/src/site/blog/groovy-oracle23ai.adoc
b/site/src/site/blog/groovy-oracle23ai.adoc
index 473a6ec..6e0d421 100644
--- a/site/src/site/blog/groovy-oracle23ai.adoc
+++ b/site/src/site/blog/groovy-oracle23ai.adoc
@@ -168,7 +168,7 @@ Iris-setosa Iris-setosa 100
Iris-virginica Iris-virginica 100
Iris-versicolor Iris-versicolor 100
Iris-versicolor Iris-versicolor 100
-Iris-versicolor Iris-versicolor 70
+*Iris-versicolor Iris-versicolor 70*
Iris-virginica Iris-virginica 100
Iris-virginica Iris-virginica 100
Iris-setosa Iris-setosa 100
@@ -187,8 +187,27 @@ Iris-virginica Iris-virginica 100
Iris-virginica Iris-virginica 100
----
-Only one result was incorrect. Since we randomly shuffled the data,
-we might get a different number of incorrect results for other runs.
+Only one result was incorrect (first *bold* line above).
+Since we randomly shuffled the data, we might get a
+different number of incorrect results for other runs.
+
+We can visualize how the distance query works
+by plotting the closest 10 points in a 3D plot.
+We'll do this for the points returned for the 70%
+confidence case (second *bold* line above):
+
+image:img/iris_closest10points.png[closest 10 points]
+
+This is a Principal Component Analysis (PCA) plot
+which projects our 4 dimensions (Petal width and length,
+Sepal width and length) down onto 3 dimensions.
+
+The large red dot is the projection for our test query characteristics.
+The small dots are the unselected points in our dataset.
+The medium dots are the dots returned by our `vector_distance`
+query.
+7 Versicolor points (blue) were returned and 3 Virginica points (orange) were
returned.
+We know the result was Versicolor for that data point.
== More Information
diff --git a/site/src/site/blog/img/iris_closest10points.png
b/site/src/site/blog/img/iris_closest10points.png
new file mode 100644
index 0000000..e522ecc
Binary files /dev/null and b/site/src/site/blog/img/iris_closest10points.png
differ
