4 ms·
It took us a long time to figure out 0. This idea of multivariate time series is "tacit knowledge" and once we get good at modeling it we will never look back.
by deathhand 4y ago
It took us a long time to figure out 0. This idea of multivariate time series is "tacit knowledge" and once we get good at modeling it we will never look back. As a laymen this is the most accessible I've seen these concepts.
And speaking for neurology methodology for time series tests subtraction sucks! https://www.researchgate.net/publication/12369885_How_to_Avoid_the_Fallacies_of_Cognitive_Subtraction_in_Brain_Imaging https://www.researchgate.net/publication/12369885_How_to_Avo...
- dang 4y agoCan you say more? What's "0" in this context?* and can you explain what the idea here is and why it's useful? I think quite a few readers would be curious. (* I ask because I can't find anthing labeled 0 - but I may have messed up the URL - see https://news.ycombinator.com/item?id=34223587 https://news.ycombinator.com/item?id=34223587)
- deathhand 4y agoI mean zero as in the nothing sense. We had trade and society before we had way to mathematically describe nothing. The history is diverse and interesting: https://en.m.wikipedia.org/wiki/0 https://en.m.wikipedia.org/wiki/0
- pvg 4y agobefore we had [a] way to mathematically describe nothing. This seems a little overstated since positional number systems are fairly sophisticated mathematics - you can deal with 'nothing' without needing zero in its modern sense.
- vanderZwan 4y agoYou can even have positional number systems without zero - that's what the Babylonians had