HNHacker News
TopNewBestAskShowJobs

darkxanthos

1,681 karma · joined March 8, 2008

Data Scientist
submissionscomments
darkxanthos··on Ask HN: Mixpanel alternatives for Desktop applications
Build your own. It's crazy cheap to log things to a text file on a server. Use Spark to query from S3 and you're done.

You're really paying for the intuitive interface which you may not need.

darkxanthos··on Vitamins Hide the Low Quality of Our Food
Southern California native now living in Chicago. Most of the meals from my childhood were packaged TV dinners we microwaved. Nowadays I will slow cook a soup once a week in a large crockpot. Maybe cook 2-ish other times during the week and the rest is pre-packaged or eating out. Others probably do better, but to your point, people like me exist. :)
darkxanthos··on Ask HN: Learn to Code or Learn to Lead?
My ideals of a leader is someone who can learn from their team and use that to synthesize a team vision. Your leadership would improve greatly by asking for help on coding better.
darkxanthos··on Ask HN: Got hired for a position that doesn't exist. How do I leave?
This is the best answer I've read here. I don't think blaming you helps here. I've personally seen things like this happen to me. Sure I've learned more about how to prevent this from happening in the future but it's still very aggravating.

Basically, don't give this job your everything. Do the work that's required of you and like the parent thread says leave yourself a bunch of energy. A technique that's worked out well for myself and other friends in the past is taking the first couple hours of each day to do personal projects and then go into work.

Don't give them the best hours of your day.

darkxanthos··on A/A testing
Interesting stats hack definitely. I love the point the other comments are making: Learn more about simulation and bootstrapping. It'll still require a little probability but all of the results will make a ton of sense.
darkxanthos··on Demystifying SEO with experiments
That's cute until your large business moves down in rankings and you start losing thousands of dollars because who knows why.
darkxanthos··on What real life good habits has programming given you? (2008)
Clearly specifying what I mean and using precise language. I never understood the importance of that until a few years of programming.
darkxanthos··on Optimizely Statistics Engine
Every time they say "classic statistics" just insert "what we did before now" and see how frustrated you get with this announcement. The whole point of using them is that people don't need a statistician because the tool should make it easy to run solid tests. That of course hasn't been the case and they're finally admitting it.
darkxanthos··on Optimizely Statistics Engine
It's actually sequential testing which is not necessarily Bayesian. Also, it's not a cheap knock off. Just another way of getting to an answer.
darkxanthos··on K-means clustering is not a free lunch
On the one hand the article is saying, "Look at your data." On the other it's saying, "Visualizing data is hard in more than two dimensions." It doesn't really offer any suggestions to fix that.

I imagine using something like PCA comes with its own warts. What is a clustered to do?

darkxanthos··on 30 fps vs. 60fps: Am I crazy for not seeing a difference?
Being someone who can see the difference like night and day, I imagine there must be something that varies per individual... which also makes me feel like you are lying. So I totally understand where you're coming from.
darkxanthos··on Think Retro: How HyperCard inspired a generation of future developers
It may have had something to do with what was available at the time... For myself I had an old Mac plus and it had basic and HyperCard. Creating graphical games was HARD in basic. In HyperCard I could just draw a picture in it, make areas clickable add some script and voila! I made little cheesy Myst-like games.

As it progressed they made it easier to play music on queue and play video. Eventually I moved onto the web but the web was also complicated by JavaScript which I avoided for years.

darkxanthos··on Ask HN: Include High School Experience on My Resume?
I don't. I'm almost 33 years old and feel like the jobs I don't get are completely on me. :)
darkxanthos··on Psychologists Strike a Blow for Reproducibility (2013)
To the idea of replicating the experiment, replicating it as closely as possible is exactly what the statistical methods assume. The other concept you're speaking to seems more like establishing causation or just generally understanding when the observed effects do or do not result. That seems better as a separate study altogether.
darkxanthos··on Psychologists Strike a Blow for Reproducibility (2013)
It's important to read the study's goals... But I agree. If we really want to understand how well the studies are being conducted there should be a random sampling of studies from different behavioral affects.
darkxanthos··on Psychologists Strike a Blow for Reproducibility (2013)
All of their data and methods are all online here: https://osf.io/ebmf8/

This is a very well done study and almost every criticism I've read in the comments is addressed in it if you read the write up.

darkxanthos··on Psychologists Strike a Blow for Reproducibility (2013)
The original paper considers this and finds that to be of limited if not negligible concern. The experiment designs were extremely meticulous and even included the original authors whenever possible.
darkxanthos··on Psychologists Strike a Blow for Reproducibility (2013)
I believe they had each of the 13 studies independently reproduced by 36 different labs. If you can't reproduce it across such a setting I think it's safe to discount the original work.
darkxanthos··on Ask HN: How do you track working time of your remote workers?
By tracking results not time. That might seem a bit terse and ambiguous. The reason for that is that trust is a huge aspect of employing remote workers. If you've lost that (or never had it) that is the real problem that needs to be solved.
darkxanthos··on Calories in, calories out
The question of "...is what you eat more important than how much?" Went unanswered it appears. Essentially, what if he ate the same calories each day but improved the number of calories he burned per pound of body weight? A hypothesis I've seen scattered around the t00b lands is eating sugar effectively lowers that value (I think it's alpha in his analysis). I wonder how much one can change that and how so.
darkxanthos··on Use Python in Excel without add-ins
Kind of a serious difference... This is using Excel in Python. Python is not running inside Excel with this.
darkxanthos··on Song of the Introvert
I've been two different kinds of introverts over the course of my life. One is as rands describes it: A person in their cave not wanting their life to be disturbed. The other kind is the type who can and understands how to interact with you, but usually would rather be deep in thought solving my latest puzzle.

But those times when I make room for socializing... woof. Those are some good times. :)

darkxanthos··on Designing a Personal Knowledgebase
I use a hybrid of Omnifocus, mediawiki, and pen and paper.
darkxanthos··on Designing a Personal Knowledgebase
God this is hard. I've been trying to get at a solution to this exact problem for a very long time as well. It needs to be there when I'm walking down the street, sitting in a busy meeting, or at home in bed. A hybrid of mind-mapping, notes, and a document database. I'd also like to be able to publish and organize documents for others to view.

I wish I had a solution.

darkxanthos··on The End of Agile: Death by Over-Simplification
That appears to be the only point in that page that resembles a process. And really it's self-reflection as a principle. But really a process is more mechanical. The manifesto says "Hey! Reflect regularly." That is not the same thing as saying "We must have a retrospective every 2 weeks using the force direction exercise..."

Your calling it a "meta-process" implies to me that you also get that distinction.

darkxanthos··on The End of Agile: Death by Over-Simplification
Show me where in the agile manifesto ANY process is recommended: http://agilemanifesto.org/

This is the entirety of the issue. Once one refers to it as a process their entire argument is flawed.

darkxanthos··on Hyperreal numbers: infinities and infinitesimals
Oh totally. I know they were. From the wikipedia article though it seems like they were much less rigorous about their treatment and that it wasn't until the mid-20th century that there was a formal treatment of them.
darkxanthos··on The End of Agile: Death by Over-Simplification
With any story like this there's always one bit that's understated. There's agile as it is practiced and agile as it is described by the founders. They're quite different.

Agile as described by the founders is so squishy it can almost never be wrong. How so? There is no process. There is no explicit denial of waterfall process. There's only values and stated preferences. If an agile project fails one can always say "Why didn't you choose a better process for the people?"

Ultimately the whole point was to deliver working software and optimize for change. That hasn't died as far as I can tell... We just achieve it in many different ways. What could be more agile than that?

darkxanthos··on Hyperreal numbers: infinities and infinitesimals
When the author says infinitesimals can be used to define calculus in a perfectly rigorous way I get a bit skeptical. After reading this Wikipedia article though I see why.

http://en.m.wikipedia.org/wiki/Hyperreal_number

I still think there's a certain elegance of not needing to define a whole new set of numbers, but there's also an elegance to the intuition of infinitesimals and infinitesimals.

darkxanthos··on The most common errors in undergraduate mathematics
Just completing Real Analysis and an interesting addition to your point is the decision to even call zero a natural number.

It's really opened my eyes to just how much of the definitions around the math I group up with is due to convenience more than anything.

← PreviousPage 4 of 21Next →