These are chat archives for FreeCodeCamp/DataScience

23rd
Mar 2016
Darwin RC
@darwinrc
Mar 23 2016 03:00
thanks @evaristoc I'll take a look. You're always one step ahead :clap:
CamperBot
@camperbot
Mar 23 2016 03:00
darwinrc sends brownie points to @evaristoc :sparkles: :thumbsup: :sparkles:
:star: 241 | @evaristoc | http://www.freecodecamp.com/evaristoc
Emil Aasa
@emilaasa
Mar 23 2016 06:24
@darwinrc Hans Rosling does some nice presentations
and extremely passionate about his work
Alice Jiang
@becausealice2
Mar 23 2016 06:47
There's a very good chance I'll sleep in late, but this is where I left off and this is where @t3h2mas left off in our attempts at scraping rendered github markdown if anyone feels so inclined to work on it.
demipixel
@demipixel
Mar 23 2016 06:47
What's it suppose to do?
Scrape the wiki?
Alice Jiang
@becausealice2
Mar 23 2016 06:47
yep
His can't find the state/regions at all
demipixel
@demipixel
Mar 23 2016 06:48
What format should it be parsed in
Alice Jiang
@becausealice2
Mar 23 2016 06:49
and instead of returning objects for each city with a region(if it exists) and country I'm getting an object for each country with it's regions and cities all concatenated into a single string each
JSON with the values for the city name, region name (if it exists), country name, and facebook group url
Good luck to anyone who gives it a go ;)
Goodnight!
demipixel
@demipixel
Mar 23 2016 06:50

So like:

{
  "countryA": ["city1", "city2"],
  "countryB": {
    "countyZ": ["city3", "city4"]
  }
}

?

Alice Jiang
@becausealice2
Mar 23 2016 06:52
{
    "city": city,
    "region": state/region/province,
    "country": country,
    "facebook": facebook
}
demipixel
@demipixel
Mar 23 2016 06:52
gotcha
Alice Jiang
@becausealice2
Mar 23 2016 06:52
Based on my last scrape there should be 1150 objects
Anyways, it's late, I had to get up early, and I have errands to walk before I come back and work on this some more so I'm gonna go rest myself. Goodnight and goodluck :)
demipixel
@demipixel
Mar 23 2016 06:53
cya
evaristoc
@evaristoc
Mar 23 2016 08:16
@demipixel: your solution for the Exact Change: if I am not wrong, greedy for a weighted knapsack problem... Classic...
People:
For those who haven't seen the @demipixel article about the problem, read this medium article
@emilaasa @darwinrc ... and Hans Rollins is Swedish, ah @emilaasa?
Emil Aasa
@emilaasa
Mar 23 2016 08:21
Rosling, and yeah he is swedish
evaristoc
@evaristoc
Mar 23 2016 08:22
Rosling, sorry... He is a benchmark... what he has done with gapminder and his work in general... interesting guy
Emil Aasa
@emilaasa
Mar 23 2016 08:22
Yep!
evaristoc
@evaristoc
Mar 23 2016 08:23
Have you met him?
Emil Aasa
@emilaasa
Mar 23 2016 08:23
I think he and his son have the company together.
Yeah I had some lectures with him on global health
Charismatic dude for sure
evaristoc
@evaristoc
Mar 23 2016 08:23
Are you working on projects in health topics at the moment?
Emil Aasa
@emilaasa
Mar 23 2016 08:24
Not at the moment, I’m doing GIS work right now.
I am pretty into doing some health related work as my next big projects tho
How about you @evaristoc, what are you working on?
evaristoc
@evaristoc
Mar 23 2016 08:28
My current focus is on topics around Customer Lifecycle Management. However, my interest can reach farther: I have a Sciences background, specifically Life Sciences. Have done some small projects in Epidemiology...
My other area of interest is Sciences, Technology and Innovation Studies.
Emil Aasa
@emilaasa
Mar 23 2016 08:29
Cool!
evaristoc
@evaristoc
Mar 23 2016 08:30
Yea! My curiosity doesn't have limits, I am afraid...
Lately I have been working on the topic I mentioned the first... It allows to combine several techniques and knowledge in just one area...
Emil Aasa
@emilaasa
Mar 23 2016 08:36
What is Customer Lifecycle Management?
evaristoc
@evaristoc
Mar 23 2016 08:39

A quick summary: if you require to control the existence of customers in your systems for some reason, it goes more or less like follows:
Lead->Recruitment->Conversion->Tenure->Attrition

Normally you need to extent conversion and tenure, and reduce attrition and costs of lead and recruitment. It can be tough...

I have more experience with Tenure and Attrition analysis techniques...


@emilaasa Your topic and current knowledge might be far from the skills available in this room but whenever you have time to share a couple of links or comments about data science used to deal with problems in the health sector and how GIS is also helping, it will be appreciated... There are people here that could be interested...

Emil Aasa
@emilaasa
Mar 23 2016 08:40
I like your chatting-formatting skills! :)
evaristoc
@evaristoc
Mar 23 2016 08:41
Heehehehe! Years of experience, man!
Emil Aasa
@emilaasa
Mar 23 2016 08:41
That sounds like a pretty complex field you are working on!
Well I kind of see GIS as a subset of data science, and having that spatial data seems to help humans understand data well.
evaristoc
@evaristoc
Mar 23 2016 08:43
About complex field: I think no more than GIS (I did some when at uni...: a LOT of geometry as well as complex algorithms to solve problems like, mentioned above, set cover)
Emil Aasa
@emilaasa
Mar 23 2016 08:45
Yeah the nitty gritty of rendering maps etc can be quite mind-boggling. =)
evaristoc
@evaristoc
Mar 23 2016 08:45
You should be more busy with graphs than we are now... I am introducing the topic with Social Network Analysis
Emil Aasa
@emilaasa
Mar 23 2016 08:46
What kind of graphs are you refering to?
evaristoc
@evaristoc
Mar 23 2016 08:47
Well... polygons
When not raster...
Emil Aasa
@emilaasa
Mar 23 2016 08:48
Ah. =)
evaristoc
@evaristoc
Mar 23 2016 08:51
I have a friend who is a researcher living close to the North Pole in Sweden doing research about Climate Change and the impact on tundra! For what I heard from her, HARD LIFE
Emil Aasa
@emilaasa
Mar 23 2016 08:51
Haha she is probably my neighbor!
evaristoc
@evaristoc
Mar 23 2016 08:52
They only eat meat, I don't remember the name of the big deer-like animal that lives there...
Hahaha! Really!?
Emil Aasa
@emilaasa
Mar 23 2016 08:52
there’s only reindeer and moose here
So one of them :)
evaristoc
@evaristoc
Mar 23 2016 08:52
I thought you resided in Stockholm... YES! Moose, exactly.
Emil Aasa
@emilaasa
Mar 23 2016 08:52
Yeah I live above the arctic circle in sweden
evaristoc
@evaristoc
Mar 23 2016 08:53
Wow! Amazing, really!? Beautiful...
Emil Aasa
@emilaasa
Mar 23 2016 08:54
It’s a pretty place! And absolutely guaranteed no screen glare for 5-6 months per year. :+1:
evaristoc
@evaristoc
Mar 23 2016 08:54
Should be, I went to Stockholm and I LOVE THAT CITY... Haven't the chance to go further north yet...
Emil Aasa
@emilaasa
Mar 23 2016 08:54
Yeah Stockholm is a nice city. Where are you from?
evaristoc
@evaristoc
Mar 23 2016 08:54
Hahahaha!
I am a Venezuelan-turned-Amsterdammer
Emil Aasa
@emilaasa
Mar 23 2016 08:56
Interesting! :)
I’ve never even been to South America
evaristoc
@evaristoc
Mar 23 2016 08:56
Love the Netherlands but... I miss the tropics landscape now and then...
Emil Aasa
@emilaasa
Mar 23 2016 08:56
Yeah I’d imagine
evaristoc
@evaristoc
Mar 23 2016 08:59
For what I have seen of Sweden, you will shock at the huge contrast between the two geographies. Shocked in the nice way! When I was in Sweden I was delighted about finding geographical landmarks that you can not see in other places but in Scandinavia...
I guess you could experience a similar feeling if you go Southern...
Emil Aasa
@emilaasa
Mar 23 2016 09:00
hehe yep! I was in Australia for a year, that was pretty different climate wise.
evaristoc
@evaristoc
Mar 23 2016 09:01
Specially if you go to the JUNGLE... OOOOOOhhhh OOOOHHHH OOHHHH! (<-- Tarzan call Jane...)
Emil Aasa
@emilaasa
Mar 23 2016 09:01
Well now my little pluralsight video is done and I have to close chat to get something done :)
Have a nice day!
evaristoc
@evaristoc
Mar 23 2016 09:01
Take care man! See you around!!
evaristoc
@evaristoc
Mar 23 2016 10:39

People:
While applying an SVD method to solve for code comparison I confronted a sparse matrix (more zero's than non-zero values). My matrix is extremely small so I am not facing visible performance issues. But what happen when you have to deal with extremely large matrix structure with just 0.1% of non-zero values? One of the common problems is memory. Finding an optimum in those situations is more demanding.
Just to give you an idea, I am attaching a link of someone asking for help in stackexchange:
http://stats.stackexchange.com/questions/41259/how-to-compute-svd-of-a-huge-sparse-matrix

This is a common problem, so be aware of it!!!!

demipixel
@demipixel
Mar 23 2016 14:43
@evaristoc Nailed it on the head. Wondered if I could switch it over to a limited number of coins and it worked. Thanks!
CamperBot
@camperbot
Mar 23 2016 14:43
demipixel sends brownie points to @evaristoc :sparkles: :thumbsup: :sparkles:
:star: 242 | @evaristoc | http://www.freecodecamp.com/evaristoc
Alice Jiang
@becausealice2
Mar 23 2016 16:37
Morning data geeks!
evaristoc
@evaristoc
Mar 23 2016 20:29
Hi People:
Quickly sharing an appetizer @alayek sent to me in the python room:
http://norvig.com/ipython/README.html
Roel Verbunt
@roelver
Mar 23 2016 20:52
@evaristoc Can I use this room for chatting about the FCC API I'm working on? A special API room is a little overdone for now.
evaristoc
@evaristoc
Mar 23 2016 21:17
@roelver you are more than welcome! This room is absolutely yours, meneer!