Steve Bennett yazmış:
Sorry to keep spamming, but can you explain what's
going on in the
"French Guyana" graph? The recommendations seem bad: it suggests
removing what look like correct links. e.g.:
* [[:gl:Güiana francesa]] ---> [[:no:Fransk Guyana]]
* [[:gl:Güiana francesa]] ---> [[:en:French Guiana]]
* [[:gl:Güiana francesa]] ---> [[:simple:French Guiana]]
* [[:gl:Güiana francesa]] ---> [[:ga:Guáin na Fraince]]
I don't know about others, but for me this is not a spam, but
a very valuable feedback. Keep spamming ;) Now to the point.
It is not a wrong recommendation, rather a poor way of
communicating an observation.
These recommendations are due to the fact, that there's already
[[:gl:Güiana Francesa - Guyane française]] connected to the
"French Guiana" group, and the latter has stronger connections
(in both directions). This is actually a "merge" pattern.
More on this in the next paragraph.
Also, something is clearly wrong with the Arabic
article, but from the
graph, it's not clear what. I think perhaps the article "جويانا" links
to [[Guyana]] but that in turn links to "غويانا". You have this
strong sense that the graph is trying to tell you *something* (notice
the huge pretty pattern around that article), but it's not obvious
what it is.
The Arabic article close to "Guyana" is outside, because there's
another Arabic article inside, which has even stronger ties with
the group, so this is actually a "merge" pattern. If my
pattern-detection heuristics were a bit smarter, they would
paint the outsider's links green.
Hint: in "merge" patterns, the other article in the same language
usually appears somewhere on the opposite side of the group. This
is because node placement is simple mechanics, with harmonic
potential (trying to keep a fixed distance for each link) and
repulsive potential (trying to separate same-language articles
as much as possible).
Addressing your remark from the previous mail: it is difficult to
find a balance between the harmonic and repulsive potentials.
When the harmonic is too powerful, then the different clusters are
too close together and the cluster labels overlap. When the
repulsive is too strong, then one observes the astronomical
distances, as you've put it.
My hint here: after Ctrl-A, when you realize that the distances
are too big, do the following:
1) go to the Positions dialog, press Seed
2) open the dialog again and calculate positions with a lower
(try 10 times lower) "Repulsive potential constant"
Also, for performance, it would be useful to be able
to hide all grey
(normal) links, and just show the ones that need attention.
I couldn't agree more. This is what kills the performance the most.
Ultimately, I'd like to replace the clusters of gray links with
gray polygons (perhaps a bit lighter gray). I should also change
the "layering" so that the gray polygons are behind cluster labels
and thus the labels are readable.
Thanks again for all your comments!
Regards,
Bolo