04-11-2017 04:33 PM
Solved! Go to Solution.
04-12-2017 07:05 AM
to speak in more general i think you should have two principal ideas in mind.
The more complex it gets the weaker is a human
Humans are used to work in a 1,2,3 or 4D world. This is how we work. If you take a high-dimensional data set where the pattern to extract is complex, the humans will loose. Simply because we can not grasp a 10 level deep tree like structure
The more transfer knowledge is usable, the better the human
Humans excel in text and image mining. A reason for this is that a human can use his fast knowledge on visuals or the language he is using and put this into his decision function. We are very used to extract features from faces to remember someone. On the other hand you can see that this might dramatically fail if you are european and the face to recognize is asian. In this case your "built-in feature generation" breaks. You need to adapt.
04-12-2017 07:49 AM
Thank you for your explanation, Martin! :-)
I understand what you were saying. But if it is like you said, there must be a point where the machine is equally good as the human and I think that would be the most interesting point to show to an audience. So is there a way to model a task (for example classification, estimation) that can be solved by an audience and e.g. an ensemble that produces nearly the same result? I think that would somehow "shock" the audience, that a machine learning process can reproduce nearly the same result.
04-13-2017 05:02 AM
did you think about sentiment analysis? The prebuilt Aylien/Rosette operators might be a good starting point. You can pick ~10 people from the audience and give them red and green papers. Then they should vote intependendly on the sentiment and you can compare this with the result of a Sentiment model.
Another story to tell would be Scanner girls in particle physics. Thats a thing where we moved from recognition by eye to multivariate approaches in the last 50 years.
04-13-2017 06:33 AM
Sentiment Analyzis sounds really good to show. I have read some websites few minutes ago, but in former version of rapidminer the operator "Analyze Sentiment" was available, in the version 7.4 it is not. Where do I find the operators needed for this?
Yes, thats a good example! :-) The LHC is doing that constantly, since there are millions of particle collisions every second, which data has to be analyzed.
04-13-2017 07:09 AM
Analyze Sentiment is part of either Aylien or Rosette extension which are freemium extensions. Aylien got 1000Examples/day for free.
And LHC: Yep, i've done my PhD in a similar environment so I now a bit of it.
04-13-2017 03:48 PM
Thank you, Martin!
I played a little bit with the sentiment Aylien analysis and it is just amazing. I already tried myself on analyzing twitter data of different politicans. Interesing who is playing with fear and who is the hopeful one .