Selectors

[mlajtos]

Some time ago, there was an idea for selectors as a more powerful mechanism for targeting specific nodes. Now, one can pinpoint only the node that has an identifier attached. Selectors (as known from CSS) would allow to match more than one node. For example:

c1:Conv
c2:Conv
In -> [c1,c2] -> Out

could be replaced by:

c1:Conv
c2:Conv
In -> |c*| -> Out

Matching should be also possible by node type. This is also equivalent to previous example:

Conv Conv
In -> |Conv| -> Out

Also combining the two:

c1:Conv
c2:Conv
In -> |c*:Conv| -> Out

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Selectors should be really handy for inspecting nodes. For example, if one would like to inspect all ReLU nodes for dead neurons, you should just write:

|ReLU| -> Inspect

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Of course, paths should be also supported:

metanode:{ ... }
|metanode/*| -> Inspect

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However there are some open questions:

• On what level should selector act? If I want to inspect all ReLU nodes in current metanode vs. inspecting all ReLU nodes..
• What wild cards should be supported? Or maybe regexes?
• What about matching against parameters?

[mlajtos]

1. Definitely notation should not be |mu|
2. If it would be /mu/ it would be awesome - regex evocation, visually not palindromatic (because glyph / is asymetric)
3. group:/ReLU/ :D
4. g:/g:X/ 🙃
5. (Maybe matching against identifier is bit idiotic?)
6. But definitely selector must be identifiable
7. Generators are the other half of the problem.
8. Still no clue about parameters ☹️