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##### Activity
Shouvik Roy
@royshouvik
:smiley:
Mahdi Dibaiee
@mdibaiee
@royshouvik sure, I will! It's been good so far, I'll see what I can improve along the path. :D :+1:
Srikant Mahapatra
@SassySamurai
@mdibaiee: Integration is used a lot in probability. And probability is one of the cornerstones of data science.
Mahdi Dibaiee
@mdibaiee
@SassySamurai oh, I'll have to see! I haven't reached probability yet, thanks for mentioning it! :D
Vincent Dania
@vincentdania
Anyone from Abuja, Nigeria here?
wsr13990
@wsr13990
i recently try to open edx course for statistics and it says enrollment is closed
is there any good alternative for that?
Srikant Mahapatra
@SassySamurai
@wsr13990, try the new one from University of Edinburgh: https://www.edx.org/course/statistics-unlocking-world-data-edinburghx-statsx
wsr13990
@wsr13990
@SassySamurai Thanks, gonna check that out
wsr13990
@wsr13990
Just as information, it seems that NLP course in coursera is no longer accessible
ionakathryn
@ionakathryn
does anyone know how i can learn R but not download anything and use an online IDE?
or learn data science
i was using datacamp but they want me to subscribe / pay which im not sure if i want to do yet
Xavier Sumba
@cuent
Hello, I'm working on finding relatedness of words. The problem is the following: given 2 groups of words, I need an output which should be some a confidence score that says whether there is or not a relationship between g1 and g2.
Anyone knows a way to that? or Where can I start? I was thinking on word2vect.
Mahdi Dibaiee
@mdibaiee

@cuent: You can definitely use word2vec and cosine distance to find relationships between words, just be aware, relationship does not always mean being synonym, or antonym, or anything like that, the human perspective of "relationship" is not necessarily reflected in word2vec, for example, bad and good are likely to be very similar to each other in word2vec, it's in the sense that they are both used in similar contexts.
I guess you could train a model to find the relationship you have in mind between words.

As a side note: If you are looking for finding similarities between words in terms of characters, you might find Levenshtein distance useful.

Xavier Sumba
@cuent
@mdibaiee Thanks
Mahdi Dibaiee
@mdibaiee
@cuent You're welcome :D
ionakathryn
@ionakathryn
@mdibaiee thank you!
:smile: )
Mahdi Dibaiee
@mdibaiee
:pray: :D
Mahdi Dibaiee
@mdibaiee
Hey, there are a few issues and pull-requests waiting for review, some of them are for a month ago. I would appreciate it if you take a look at them. :D
@royshouvik @ericdouglas
Shouvik Roy
@royshouvik
@mdibaiee Thanks for the heads up...was not able to check on DS repo of late... had some accidents in the family..
But I have merged all the PRs (except one which added paid content to the curriculum).
Mahdi Dibaiee
@mdibaiee
@royshouvik thank you! I also created the pull-request for Natural Language Processing! :+1: :D
ionakathryn
@ionakathryn
Hi I'm learning R via an edx course
and ive sorted my data from columns 13:24
and I need to take a random sample size of 1.....this data from columns 13:24 is called newdata
so why when i run the command ....
sample(newdata,1) all the results are showing from 13:24 when i only want to sample 1??
Srikant Mahapatra
@SassySamurai
@ionakathryn: You seem to be taking quite a few courses simultaneously. I've seen you on the other rooms as well. Do you mind telling me what courses you're taking right now?
ionakathryn
@ionakathryn
@SassySamurai im mainly taking cs50 and ive been stuck on the same pset for a while now, i do some challenges on hackerrank and i dabble in this r course (short course, so not very often). the main course im doing is cs50, which ive been doing for over a year aswell as an udacity android course! i lose focus so much, its difficult as i get really sidetracked and lose focus easily.
im trying to decide whether or not to go developer or data science route - what about you?
Srikant Mahapatra
@SassySamurai

@ionakathryn: Focus is DIFFICULT to attain; no shit! I suggest you start a meditation practice. Meditation has been shown in various research studies to improve attention, focus and overall mental well-being. You can start with Headspace: https://www.headspace.com. They have a free track called "Take 10" which comprises of ten guided meditations, one per day. This has even been recommended by Tim Ferriss. It also seems that you might be having problems with motivation. If that's the case, I suggest you stop counting on motivation and start counting on discipline instead. Read this: http://www.wisdomination.com/screw-motivation-what-you-need-is-discipline/

Regarding the career choice between a software developer or data scientist, if you're looking for advice, I don't have any because I haven't started my career yet! I was initially traveling on the data science route but then I chose to fulfil my childhood dream of becoming a game developer, so I have now taken a detour to the development side. I believe in Cal Newport's philosophy that "skills trump passion in the quest for work you love." Basically, "be so good they can't ignore you."

ionakathryn
@ionakathryn
ahha thanks @SassySamurai are you following the bioinformatics path? i dont tend to struggle with focus when learning specific things, i mean the bigger picture, like what to learn e.g java, c , python etc i get excited about all the possibilties of what to learn haha :joy: i am trying to meditate for 5mins/day. i know this isnt much at all, and some days i dont even manage it but its better than nothing! :P
Srikant Mahapatra
@SassySamurai
@ionakathryn, if you're going the data science route, then let me tell you this: you have to be really good at the math behind data science in order to do anything meaningful in this field. Just knowing the various algorithms and how to apply them won't suffice; you have to understand why they work. Not much math is required for software development, though, unless you're planning to work in a math-intensive field such as computer graphics, game development, simulations, etc.
ionakathryn
@ionakathryn
what about working in a medical field with programming e.g genetic research , does this come under data science and needing to learn lots of math?
ionakathryn
@ionakathryn
and also what about machine learning/ AI / Business intelligence? Does the same apply?
Srikant Mahapatra
@SassySamurai
@ionakathryn: Machine learning and AI are heavy on math. So any field that makes use of these require you to be proficient in math. I don't have anything to say about bioinformatics, genetic research, etc. except that they require proficiency in biology obviously. I don't think they're as math-intensive as core ML and AI. There are a lot of good bioinformatics courses on the Web. You might wanna check 'em out.
mattialife
@mattialife
Hello
everybody
Mahdi Dibaiee
@mdibaiee
@mattialife Hi
ionakathryn
@ionakathryn
THanks for the info @SassySamurai :)
djaballah
@djaballah
what are the mathÃ©matique prerequesties to learn machine learning
Anwesh Nayak
@anweshknayak
@djaballah probability, linear algebra and calculus would do if you want to begin. rest you can pick up while you studying
Srikant Mahapatra
@SassySamurai
Probability's child, statistics, is also important.
Anwesh Nayak
@anweshknayak
anyone has benefitted yet from this course ? Please share your experience if anyone has