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The (Scottish) startup I'm working for builds a contextual publishing platform called Bubbal ("context" based on a user's location and interests, as well as tim

The (Scottish) startup I'm working for builds a contextual publishing platform called Bubbal ("context" based on a user's location and interests, as well as time of day). We're using it to collect and heatmap yes/no opinions, worldwide, for the Scottish Independence Referendum next month. We'd love to know how you feel, and I'm particularly interested in any feedback you can give me on performance or UX.

tlarkworthy 12y ago
The kernel size (smoothing width) should be chosen based on something like leave-on-out cross validation. At the moment the sampling is too sparse and everything is independent and not smooth at all. This is described in the intro of "Assessment of probability density estimation methods: Parzen window and Finite Gaussian Mixtures" http://www0.cs.ucl.ac.uk/staff/c.archambeau/publ/iscas_aa06.pdf http://www0.cs.ucl.ac.uk/staff/c.archambeau/publ/iscas_aa06.... (as well as many other places that just happened to be the first google result) email me if you want more details, I am ex-informatics.
- chriswait 12y ago
  This is massively useful, I was looking for a way to 'aggregate' results somewhat. I will read through this today and might send you a question or two later on if you don't mind.
  - tlarkworthy 12y ago
    Yeah send any queries over or I can go through it face to face if you want.
wambotron 12y ago
This is interesting, but I feel like I have no real knowledge of the situation to give a good vote. I voted 'yes' as I assumed, after looking at the map, that most Scots want it. It doesn't matter to me, though. I'm not Scottish!
- smcl 12y ago
  Interestingly "Scottish"ness doesn't necessarily matter for eligibility to vote in this referendum. I was born and raised there for 25 years but cannot vote as I'm not resident there. Those who live in Scotland can vote, regardless* of their nationality or how they identify. Which is of course correct and reflects what I'd like an independent Scotland to look like - immigrant friendly and diverse. * = within certain restrictions, something like a couple of years resident prior to the referendum. Don't quote me on that :)

tlarkworthy 12y ago

The kernel size (smoothing width) should be chosen based on something like leave-on-out cross validation. At the moment the sampling is too sparse and everything is independent and not smooth at all. This is described in the intro of "Assessment of probability density estimation methods: Parzen window and Finite Gaussian Mixtures" http://www0.cs.ucl.ac.uk/staff/c.archambeau/publ/iscas_aa06.pdf http://www0.cs.ucl.ac.uk/staff/c.archambeau/publ/iscas_aa06.... (as well as many other places that just happened to be the first google result) email me if you want more details, I am ex-informatics.

chriswait 12y ago
This is massively useful, I was looking for a way to 'aggregate' results somewhat. I will read through this today and might send you a question or two later on if you don't mind.
- tlarkworthy 12y ago
  Yeah send any queries over or I can go through it face to face if you want.

wambotron 12y ago

This is interesting, but I feel like I have no real knowledge of the situation to give a good vote. I voted 'yes' as I assumed, after looking at the map, that most Scots want it. It doesn't matter to me, though. I'm not Scottish!

smcl 12y ago
Interestingly "Scottish"ness doesn't necessarily matter for eligibility to vote in this referendum. I was born and raised there for 25 years but cannot vote as I'm not resident there. Those who live in Scotland can vote, regardless* of their nationality or how they identify. Which is of course correct and reflects what I'd like an independent Scotland to look like - immigrant friendly and diverse. * = within certain restrictions, something like a couple of years resident prior to the referendum. Don't quote me on that :)