These are chat archives for FreeCodeCamp/DataScience

2nd
Sep 2015
Rex Schrader
@SaintPeter
Sep 02 2015 01:02
@ArielLeslie DFTBA ;)
Thinking about completion metrics:
It would be interesting to be able to get a time distribution for "how long it takes to get to this point" and, possibly, to be able to report "You are in the Xth percentile for completion time".
I am certain that if we plot out the time to completion graphs we're going to see some very clear bi (or tri) nodal distribution: Experienced users and novices. Maybe there is a middle ground, of people who knew HTML/CSS but wanted to learn JS.
There is always the possibility of building a survey for new and/or current users to take to fill in demographic information. I was also thinking that collecting prior experience information would be helpful as well. The survey would be purely voluntary, of course.
Lightwaves
@Lightwaves
Sep 02 2015 21:27

@SaintPeter
"
I would like to see the attrition rate as well . . . I'm sure it's a nice power curve drop-off.
But you can filter for "active users" or something
I know that the data is going to be noisy as heck. It would be interesting to classify users in certain ways: For example, someone who is an "expert" coming in would complete LOTS of early waypoints very quickly.
Someone who is a genuine novice may only complete a few a day
I think that we might be able to tease these sort of relationships out and be able to group users into rough categories.
Then we can see how far each type gets, which problems send them to he help rooms, etc.
There is also going to be noise from broken tests as well."

Why does this sound suspiciously like a k-means clustering algorithm problem

Rex Schrader
@SaintPeter
Sep 02 2015 21:35
I'll have to take your word for it - I did a bit of research on that today for an unrelated project, but my math skills are not strong enough to understand the standard algorithms for doing that analysis.
Lightwaves
@Lightwaves
Sep 02 2015 21:37
@SaintPeter that's my problem atm, my math skills aren't strong enough to understand the algorithms used for ML.
Rex Schrader
@SaintPeter
Sep 02 2015 21:38
I've got an Engineering degree, but I "C"ed my way through math and statistics.
I've never really needed it.
Today I totally fudged together an "algorithm" in Excel just taking the sum of the inverse of the squares of the distances of the adjacent dates.
Lightwaves
@Lightwaves
Sep 02 2015 21:39
haha that's a mouthful
Rex Schrader
@SaintPeter
Sep 02 2015 21:40
The formula was not pretty. But it gave me enough to look for some vague patterns in failure data.
Maybe I should take on the personal challenge of writing a k-means clustering algo formula in Javascript :D
evaristoc
@evaristoc
Sep 02 2015 21:55
@SaintPeter and @Lightwaves: hehehe!
Ariel
@ArielLeslie
Sep 02 2015 21:56
did all y'all data nerds see today's XKCD? http://xkcd.com/1572/
Lightwaves
@Lightwaves
Sep 02 2015 21:58
What in all that is holy is this survey?
The questions! :laughing:
Ariel
@ArielLeslie
Sep 02 2015 21:59
He just wants to see what kind of weird analysis people do with the data
People who are afraid to fly and also have food allergies are disproportionately likely to have vowels overrepresented in their keyboard mashing
evaristoc
@evaristoc
Sep 02 2015 22:16
@ArielLeslie what was that!!!??? Just finished, I am not sure if I gave the right answers...
Ariel
@ArielLeslie
Sep 02 2015 22:16
lol
evaristoc
@evaristoc
Sep 02 2015 22:16
Where are the results??
Ariel
@ArielLeslie
Sep 02 2015 22:16
I'm guessing he'll post them when the survey closes
evaristoc
@evaristoc
Sep 02 2015 22:19
Ok... I can't wait to see my psychological me revealed...
Ariel
@ArielLeslie
Sep 02 2015 22:19
about as meaningful as meyers briggs...
CamperBot
@camperbot
Sep 02 2015 22:19
you need to ask about @someone!
Lightwaves
@Lightwaves
Sep 02 2015 22:19
I felt violated just reading it
evaristoc
@evaristoc
Sep 02 2015 22:20
@ArielLeslie who is meyers briggs??
Ariel
@ArielLeslie
Sep 02 2015 22:21
The stupid "personality types" test that companies like to make you take to "learn your leadership style" and meaningless crap like that
evaristoc
@evaristoc
Sep 02 2015 22:21
Was that a question??? No... I might have given the wrong answer... hmmmm
Oh............
Where can I delete that stuff??? Are we monitored by big companies!!?? I could become blacklisted...
I want to be a leader, you see??
I don't want to give the wrong impression...
How do I delete that stuff??? Oh my God!!!
I am f....
My future is over...
Ariel
@ArielLeslie
Sep 02 2015 22:25
you alright over there?
evaristoc
@evaristoc
Sep 02 2015 22:27
I think so...
I guess I will survive...
I really want to see the results and what people are planning with that stuff, really...
Ariel
@ArielLeslie
Sep 02 2015 22:29
me too
Rex Schrader
@SaintPeter
Sep 02 2015 22:33
LOL
@evaristoc I don't know if you're well suited to data analysis - you may be a bit too paranoid.
Serenity
@qmikew1
Sep 02 2015 22:34
Gitter's alerts need some tweaking
Rex Schrader
@SaintPeter
Sep 02 2015 22:36
You can turn them down. Click the little tool icon and select notifications. Change it to a lesser setting.
Note that this is a per-room setting.
Serenity
@qmikew1
Sep 02 2015 22:37
@SaintPeter thanks (brownies...)
CamperBot
@camperbot
Sep 02 2015 22:37
qmikew1 sends brownie points to @saintpeter :sparkles: :thumbsup: :sparkles:
:star: 455 | @saintpeter | http://www.freecodecamp.com/saintpeter
Rex Schrader
@SaintPeter
Sep 02 2015 22:38
:D
Serenity
@qmikew1
Sep 02 2015 22:38
You're right, the settings change according to what room you're in
Ariel
@ArielLeslie
Sep 02 2015 22:38
That part is not my favorite
Serenity
@qmikew1
Sep 02 2015 22:39
same here (I thought it was global) but I'm not too upset (actually like data-science)
but doesn't make for lighting discussion lol
lightning
totally different word..
evaristoc
@evaristoc
Sep 02 2015 22:43
@SaintPeter What a coincidence! I was just to suggest to open a room about internet security and JS...
Rex Schrader
@SaintPeter
Sep 02 2015 22:43
;)
Well, we've been monitoring you . . .
evaristoc
@evaristoc
Sep 02 2015 22:43
Don't scare me, man...
Serenity
@qmikew1
Sep 02 2015 22:44
I like the firefox extensions that block js when I want (although it's a bit of a pita, that ends up being less useful)
evaristoc
@evaristoc
Sep 02 2015 22:46
Yes... I guess this is why there is not a Security room in FCC...
No-one would be able to see it...
Serenity
@qmikew1
Sep 02 2015 22:46
maybe it's already there
evaristoc
@evaristoc
Sep 02 2015 22:47
Hahaha! I hate to agree with you...
Serenity
@qmikew1
Sep 02 2015 22:47
lol
evaristoc
@evaristoc
Sep 02 2015 22:48
Well people: don't tell anyone but I am going to sleep... Take care!!!