leerho commented on a change in pull request #107:
URL:
https://github.com/apache/datasketches-website/pull/107#discussion_r758857462
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File path: docs/Theta/ThetaSetOpsCornerCases.md
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@@ -82,60 +79,38 @@ We can assign a single octal digit ID to each state where
The octal digit `ID = ((theta == 1.0) ? 4 : 0) | ((retainedEntries > 0) ? 2 :
0) | (empty ? 1 : 0);`
-| Shorthand Notation | theta | retained entries | empty |
Has Seen Data | ID | Comments |
-|:---------------------------------:|:-----:|:----------------:|:----------:|:-------------:|:--:|:------------------------------:|
-| New {1.0,0,T} | 1.0 | 0 | T |
F | 5 | New Sketch, p=1.0 (default) |
-| Exact {1.0,>0,F} | 1.0 | >0 | F |
T | 6 | Exact Mode |
-| Estimation {<1.0,>0,F} | <1.0 | >0 | F |
T | 2 | Estimation Mode |
-| NewDegen {<1.0,0,T}<sup>2</sup> | <1.0 | 0 | T |
F | 1 | New Sketch, user sets p<1.0 |
-| ResultDegen {<1.0,0,F}<sup>3</sup>| <1.0 | 0 | F |
T | 0 | Valid Intersect or AnotB result |
+| Shorthand Notation | theta | retained entries | empty |
Has Seen Data | ID | Comments |
+|:---------------------------------:|:-----:|:----------------:|:----------:|:-------------:|:--:|:-------------------------------:|
+| Empty {1.0,0,T} | 1.0 | 0 | T |
F | 5 | Empty Sketch |
+| Exact {1.0,>0,F} | 1.0 | >0 | F |
T | 6 | Exact Mode |
+| Estimation {<1.0,>0,F} | <1.0 | >0 | F |
T | 2 | Estimation Mode |
+| Degenerate {<1.0,0,F}<sup>3</sup> | <1.0 | 0 | F |
T | 0 | Valid Intersect or AnotB result |
---
-<sup>2</sup> *New Degenerate*: New Empty Sketch where the user sets *p < 1.0*.
This can be safely reinterpreted as {1.0,0,T} because it has not seen any
data.<br>
-<sup>3</sup> *Result Degenerate*: Can appear as a result of a an Intersection
or AnotB of certain combination of sketches.
-
-## Invalid States of a Sketch
-The remaining three combinations of the variables represent internal errors
and should not occur.
Review comment:
1. Explaining _why_ the other 4 cases are invalid is instructive. It
helps the user understand what is going on inside the sketch.
2. It makes the analysis complete.
3. It conveys confidence to the reader that we have thought through all the
cases.
4. It is only about 10 lines of text including a simple table out of around
160 lines in the document, hardly a distraction and not clutter.
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