How many classifications has everyone done?

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Since the last time I gave an update the Citizen Scientists have added nearly 50,000 classifications. I say nearly, because we are at 293,591 classifications so just 6,409 shy of 300,000! Although the front page reports that the project is only 22% complete, we are much, much closer to having some key datasets finished and able to be analysed – see the previous post for more information. Even though we are 15 weeks after the launch of the project, around 10,000 images are still being classified every week  (11,430 last week, which is 1,600 per day). So, we should reach 300,000 towards the end of Monday…

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Why have some workflows finished but not others?

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To understand this I need to explain where all the images come from. A small part of each sample of Tuberculosis is injected into each well of a 96 well plate; the plate is quite small – a bit bigger than an iPhone. Every well has a specific amount of an antibiotic dried onto the bottom of the plate, except two wells which have no antibiotic at all. There are fourteen different antibiotics on one plate; one with only 4 different dosages, four with 5, seven with 6 and two with 8.

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The contributions to BashTheBug are following the Pareto Principle

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Last week’s post showed how a relatively few number of volunteers do a huge number of classifications. By today, the top 0.3% of citizen scientists (the top ten) have done 31,528 classifications between them, which is a staggering 19% of all classifications. To my surprise, BashTheBug is exactly following the Pareto Principle which says that roughly 80% of events come from 20% of the causes. For BashTheBug after five weeks the top 20% of users (727) have done 82% of all classifications.

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The first four weeks

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Nearly a month after the public launch, the Zooniverse citizen scientists have done a staggering 152,816 classifications. That brings us to 24% through this initial dataset and 47% of the way towards completing an important subset of the data that will let us start some initial analysis. Despite, the number of classifications and new volunteers falling week-on-week, the volunteers still did 20,000 classifications last week and 300 people tried BashTheBug for the first time. And the Zooniverse haven’t emailed their users yet.

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The first fortnight

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Another amazing week. Together the Zooniverse citizen scientists did 28,721 classifications this week, bringing the grand total to 108,833. This is 19% of the way towards classifying all the subjects currently loaded (and in reality we are a bit over a third – 36% – of the way towards being able to do some very interesting analysis). Last week 444 people tried BashTheBug for the first time, bringing the total number of volunteers to 1,578 since launch, and including the beta-testers, 2,557. Again, there are two volunteers who have done an astonishing number of classifications: 2,360 and 2,339. Thank you everyone for all your work and please keep it up!

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