Josh and I have been working on a new filter that allows you to
specify multiple tags, it promotes articles that have any of the tags
specified. This is primarily driven by Bryan and Sonali's work on
figuring out a good demo -- it's pretty common for different blogs use
different tags to represent basically the same topic, and we'd really
rather not have separate sliders for each of them. For now, the UI
for this will be much like the tag filter, but accept a comma
separated list of tags. I think it will be pretty cool.
We're thinking rather that rather than having new indexes over all the
documents for each cluster of tags that a user set's up, we'll
assemble the score out of the already indexed individual tag
information during the request.
As a little background, currently the configuration backing one of the
sliders you see in the UI looks something like this in json:
{
'title': 'Show me the Golf',
'weight': 0.5
'filter_uri': 'http://www.melkjug.com/filters/AtomTagFilter?tag='golf'
,
}
where the weight corresponds to where the slider is set and the
'filter_uri' corresponds to the type of filter that it's controlling
(in this case a tag filter for the tag 'golf'). One slider = one
filter. A whole "Jug" specification includes a list of these along
with the list of feeds being considered.
We're thinking of changing this up a bit so that one of these
'sliders' can have a more complicated internal configuration. For
example, the multi tag filter might look like:
{
'title': 'Show me the Sports',
'weight': 0.5
'type': 'http://www.melkjug.com/filters/MultiTagFilter,
'filters': [ 'http://www.melkjug.com/filters/AtomTagFilter?
tag='golf',
'http://www.melkjug.com/filters/AtomTagFilter?tag='baseball'
,
'http://www.melkjug.com/filters/AtomTagFilter?tag='hockey'
],
'op': 'or',
}
Here, we make 'filter_uri' into a list of filter_uris and specify an
operation 'op', which signals how to combine the scores of the
individual filters in the list. A 'type' is retained so that we know
what widget controls it.
So this 'sports' filter will promote an article if it tagged 'golf',
'baseball', or 'hockey' by combining the normal individual tag filters
with an (imaginary) "or" operation. I'm sure you can picture some
other uses for this structure outside the bounds of the multi-tag
filter.
What do y'all think? better ideas?
- Luke
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