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DataJunkie

150 karma · joined March 4, 2011

meet.hn/city/us-Thousand-Oaks

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DataJunkie··on California declared drought free for first time in seven years
Not even close.
DataJunkie··on Facebook Loses Top Executives, Including Chris Cox
I don't care about seeing other people's comments, but I'd like to be able to prevent people seeing my comments on other peoples' posts unless it is a mutual friend or something. No matter what it is I comment on, a news article, or a group post, and my dad (and I am sure other FB friends) see it even if we aren't connected to the same groups and sites.
DataJunkie··on Facebook Loses Top Executives, Including Chris Cox
I agree. I am not good at the stock market.
DataJunkie··on Facebook Loses Top Executives, Including Chris Cox
I remember the speech. It had no effect on how much I looked forward to waking up in the morning to go work there.
DataJunkie··on Facebook Loses Top Executives, Including Chris Cox
I used to be a fan of Facebook, but I was never obsessed with it. I even used to work there.

I'm over it.

It's useful for groups, some of the ads really are useful, it's nice to sometimes keep up with people that are far away, but the news feed has had done way more harm than good for our society, including my own life.

After the 2016 Election, Facebook posts lead to so much drama in my family that certain "branches" of the tree have unfriended and blocked each other and we haven't spoken since. My dad and I constantly argue because he will see some comment I made on someone else's post and have to give his own opinion, or read to me what the other person said back. There is no way to turn this part of the feed off.

Overall, it is a totally unpleasant product to use now. The only reason I want it to succeed is because I own stock from when I worked there.

DataJunkie··on Announcing unlimited free private repos
WOOHOO!
DataJunkie··on Facebook's AI Just Set a New Record in Translation
Ok, but do they actually use it for anything?
DataJunkie··on How and When to Use ROC Curves and Precision-Recall Curves for Classification
Me neither.
DataJunkie··on Ask HN: (CS Lecturers) How do you make class interesting?
I tie the concepts back to stuff I've done in industry and try to assign homework and projects that teach skills relevant to new technologies or stuff they may do at work. I tend to use "interview questions" to the class and that tends to generate discussion. While I stick to the expected curriculum, I prioritize content to stuff that is likely to be used again. Students appreciate this.

On a more superficial level, I put memes in slides.

This was for a databases class. Very important nowadays, but known to be one of the more boring classes.

DataJunkie··on The Story of Why I Left Riot Games
Yes, but if you're not interested in continuing in gaming, you can speak out and then quit.
DataJunkie··on How to use LEDs to detect light
It's possible that the "newest" ones use photo sensors as they now also double as standard desktop scanners, but I'm not sure they would be marketed as OMR. I suspect Scantron and Pearson NCS won't be around much longer as standard scanners are much cheaper, can accomplish the same goals (minus printing results on the form, without a special attachment on expensive scanners), and embedded processing continues to grow.
DataJunkie··on How to use LEDs to detect light
This is actually how modern Optical Mark Readers ("Scantron") works. The older models from the 1960s used electrical current passed through the paper somehow.
DataJunkie··on The Story of Why I Left Riot Games
This is a bit more general...

I worked there for a very short time as a consultant and I remember Barry. I remember being astonished at some of the things I saw and heard at that company and I am surprised it's not them getting the scrutiny and instead the larger tech companies.

Working at Riot Games was like working in a frat house where you get paid, and I mean many of the bad parts of living in a frat house. Of the places I've worked, Riot had to have the lowest median age (early 20s), which probably contributes to the problem. The guys could be assholes, but I fear that some of the women, being young and this being their first job and an amazing opportunity, get disillusioned into thinking that this behavior is normal in industry and that is really sad.

I am surprised not more have spoken out. Riot (and other gaming companies, not just Riot) has some of the bro-est culture out there and it's going to cost them in a lawsuit, just give it time.

DataJunkie··on Ask HN: Is it possible to get pigeonholed to certain company sizes/cultures?
Yes it can happen both ways: pigeonholed to small or large companies, but I don't believe you're stuck with it.

You might have a personal marketing problem, or you might have an interviewing problem.

Small companies can be great. I tend to think "startup" when I hear small company, but I think the same rules may apply. Your tech stack is probably more fluid and you can learn new technologies more easily. These are great skills to have. But... if you are not clear about what type of work you want to do and how your skills apply to that work, it is easy to turn off a larger company because they can't fit you into a role (a "box"). A good recruiter will try to shop you around the company a bit, but there's a limit as to how much time they are willing to spend doing that.

Story: I recently had a set of interviews for a large company (the recruiting process was a mess and a joke) where I was bounced from place to place and nobody (myself included) could figure out where I fit in the company. I feel that company was very tight lipped or unsure about the roles they were hiring for, so I had no better answer than "I'd be happy in either position" to which one of the hiring managers said I would be a better fit for a startup. I came into the process very wishy-washy about what I wanted. Considering this didn't happen with any of the other companies I applied to, I blame this company. Everything was secretive and somewhat adversarial. I ended up at a much larger company with a much better reputation.

Point: If you are not clear about what you want, you may get stuck in the small company loop.

The good news is that you are getting phone interviews at larger companies. Before you take an interview, research the company and its culture, don't just rely on what you know about the company. Focus on what you have accomplished at your companies, and not the tech stack you use. I've heard a lot of candidates tell me about the complexities of the open-source stack they've worked with, and that's great, but I want to know how they will help us in our mission. Those types of nitty-gritty answers would better fit smaller companies, in my opinion (unless I am specifically asking about how they did something).

Also, larger companies have a pretty standard interview process. Data structures/algorithms and coding phone interviews. You need to practice, practice, practice on Leetcode or some other platform and even re-read an algorithms book. Smaller companies tend to be more holistic and use take-home projects, have you participate in a hackathon, whatever, but to get into a larger company, you need to learn how to play the interview game rather than just being a great coder (irony intended).

DataJunkie··on Why I Don’t Talk to Google Recruiters
Google left a sour taste in my mouth after my first interview there. Recruiter was a mess. I had one phone interview with no coding questions. My resume could not be more clear that my best language was Python. Yet, every single question they said "use C, C++ or Java." It was very awkward and intimidating because although I knew those languages, I wasn't confident with them and the recruiter already knew this.
DataJunkie··on [dead]
Disappearing at that altitude, without somebody disabling the transponder, indicates an explosive decompression. These days, that typically only happens with a bomb or a missile.

In the older days, structural failure was a common cause (a blown cargo door UA811, the roof coming off Aloha 243). That just doesn't happen anymore.

Another possibility is a hijacking. Another EgyptAir flight was recently hijacked by a man wearing a vest containing fake explosives. The plane landed safely. Some dude took a selfie with the hijacker.

A Russian airliner recently exploded over Egypt as well.

DataJunkie··on Lufthansa jet and drone nearly collide near LAX
Disclaimer: Aviation hobbyist but not an expert.

It depends on the size of the drone and where it hits.

I am not sure how large these drones are, but if they have the mass of a flock of large seagulls, say, it could disable an engine (like the US Airways jet).

A collision with a wing could cause substantial damage to the wing which would change the aerodynamics, and that could be potentially dangerous at low altitudes because of the neighborhoods underneath. Debris could fall from the sky and injure or kill someone. I doubt it would come close to tearing off a wing.

A collision with the fuselage could breach the cabin which is dangerous in itself, but would not cause a decompression at that altitude.

A collision with the windscreen of the flight deck would be dangerous for obvious reasons. In the minor case, it can blind the pilots temporarily. In the worst case, debris from the drone would incapacitate the pilot during the most dangerous phase of flight: landing or departure.

What is really dangerous is the speed at which the aircraft hits the mass of the drone. It may seem like the aircraft would just kill the drone, and that is probably the case with most drones, but if it has large mass, it wouldn't.

The most dangerous scenario is if a drone hits the control surface like the flaps (very important for landing), or the horizontal stabilizer in the tail, it could be disastrous.

DataJunkie··on Show HN: Staffjoy Boss – Automated Employee Scheduling
Yeah anything with schools is a nightmare. It would be more of a project than a product for me because Zangle and MMS already have the market completely saturated, at least in California.
DataJunkie··on Show HN: Staffjoy Boss – Automated Employee Scheduling
Super cool. In grad school I developed a system to schedule TAs for a new student counselor. I used simulated annealing because it was related to something I had just learned in class, and because it wasn't heuristic.

It's an interesting problem because there are so many ways to define optimality. Does it mean working with the same manager? Working at the same facility? Minimizing travel between facilities? Number of shift in a week? etc. The problem can be extended with reinforcement learning with employee feedback. If there are manager preferences as well, there is a two-player problem with two perhaps competing interests.

I would love to work on this problem with high school scheduling for building both a master schedule and individual student schedules. No clue where I would get data though.

It's a very cool problem.

DataJunkie··on Nest Thermostat Glitch Leaves Users in the Cold
I love Nest, but this is the exact reason why I have not installed one in my mountain home. I have to keep the heater set at 55 so the pipes won't freeze and burst.

A bug like this would be financially catastrophic.

DataJunkie··on GoPro cutting 7 percent of its workforce
This was a very smart buy for them, assuming they use the technology and not just the team for some other venture. Their stock price may rebound if they can do this successfully.

- $$ for special effects or special "data widgets" - have an online video editor that uses the "cloud" (so users are locked into their services and software). Sort of like Dropbox, but for GoPro videos and includes an awesome editor. Charge $$ for membership and/or space. - $$ for GoPro sensors.

Of course, I hate to have to lock my video into their servers... but that is how they would make $$.

DataJunkie··on GoPro cutting 7 percent of its workforce
If you're talking about for video, VIRBedit can sort of do this. I loaded a GPX file into a mountain biking video, with a little red dot showing where I was. I am sure a map is just as easy.
DataJunkie··on GoPro cutting 7 percent of its workforce
I feel like this would be a worthwhile pursuit, but it would be better as software than hardware.

If this were to be a hardware pursuit, you'd have to buy a bunch of sensors, all which have a price tag and their own limitations and issues. This might bring in $$, but also cause a lot of frustration that users would not find intriguing. Or, the sensors could be in the camera which would cause even more problems with power, heat, etc and the price tag.

Software, which can read data from a variety of sources such as GoPro, GPS, thermometer, whatever, and then integrate it all into a video timeline would be more practical. Then let the user overlay data onto the video using a variety of free and paid visual effects and templates.

GoPro should be working on a competitor to VIRBedit for this purpose. VIRBedit is great and doesn't require a Garmin VIRB cam etc. There is also http://www.traceup.com/ for snowboarding and surfing.

GoPro really missed an opportunity here, but it may not be too late.

DataJunkie··on Why the Internet of Things Is Going Nowhere
It's going nowhere because nobody is taking the lead in standardizing the technology.

Zigbee is the biggest joke with tons of proprietary and incompatible implementations of an open standard.

DataJunkie··on What ever happened to Adria Richards?
He found a job about 2-3 weeks after this whole fiasco happened. It was on his LinkedIn.
DataJunkie··on Vim, LaTeX and High School
This guy is in high school? Amazing!

Either he is going to amazing places, or education is really coming a long way into better integrating technology and open-source.

DataJunkie··on Hey Yahoo, You’re Optimizing the Wrong Thing
People that work in "ad operations" usually do that work by performing A/B tests etc. To me, it is a very unglamorous step child to a data scientist.
DataJunkie··on Hey Yahoo, You’re Optimizing the Wrong Thing
Companies that I have worked for have developed models (approximate) to remove accidental clicks to prevent charging the advertiser. Usually, these clicks are "absorbed" into a CPM though, and detecting accidental clicks is very difficult and requires many assumptions about user behavior.
DataJunkie··on LexisNexis Open-Sources its Hadoop Alternative
This is a reaction, not the same post.
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