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ViktorV

86 karma · joined October 4, 2016

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ViktorV··on Ask HN: What are you working on (August 2024)?
On JumpHigher [1], an app that helps you improve your vertical leaps, just using your phone camera. It's functional already, but very early, the algorithm took quite a while to nail ( still far from perfect ).

I'm a CEO of a small consulting company, and I love working with startups ( or hate working with huge companies, matter of perspective ), and I always thought that to be better at that we have to be able to launch our own stuff.

Also, I never launched anything solo, working alone is hard for me so this was a challenge. I want to continue working on it on the side for a while.

The main audience for now would be basketball players that want to dunk, or anyone that wants a good leg workout and track the progress.

1. https://www.jumphigher.io/

ViktorV··on Agricultural drones are transforming rice farming in the Mekong River delta
Have you thought about sub Ghz mesh networking like 6lowpan with TI CC1310? If you don't need that much computing power then it's a good option, with way longer battery life.
ViktorV··on Synthesis Methods Explained: What Is FM Synthesis?
Z-transform is very similar to Fourier or Laplace transform, but in discrete time. These things are not that hard, if you get FFT already then you can get there if you want.
ViktorV··on Generals.io – Capture enemy generals to defeat them
In high level play you have to manage your land, the hard thing is how to find the optimal route to collect your army: It's advisable to take around 15-18 turns to collect your army from an area and attack in the remaining 10-7 turns, so you can attack before the enemy numbers increase. In high level 1v1 play what matters most is the area you have, if you can get +1 area per 25 rounds from your enemy you'll probably win.

But! As both of you collect more and more area it gets really time consuming and after a point you just can't collect your army optimally. I'd argue that the biggest difference between skill levels at the highest levels is how efficient the collecting is. At that point you'll need cities. Always look for the opponent's counter to know how many cities your opponent has.

Not that it matters but I was a top 5 1v1 player quite a while ago.

ViktorV··on Psychologists say they can't meet the growing demand for mental health care
One data point: I've been to couples therapy quite a few years ago and we've been getting better and better ever since.

From my experience a priest would go into that discussion with the goal of keeping the couple together, while the therapist would want ( a good one ) the best for them, whatever that may be. If your goal is to stay together with someone don't go to a therapist.

ViktorV··on Home schooling's rise from fringe to fastest-growing form of education
Just a personal anectode: I'm pretty sure that this wasn't true for me. I think some humans have an instinct for survival, maybe all of them, if a persons emotional needs are met then developing, advancing, learning is a natural byproduct without any external pressure. Just like we learn to talk and walk without someone telling us to do.

All the push just hurt me in the end, I would be a lot better off without traditional school, rarely I learned anything useful there.

ViktorV··on Show HN: Collaborative text editor with PouchDB and ProseMirror
Hey there! I co-authored this article about a web-based collaborative editor. The main trick is that by using PouchDB's sync functionality we can do client-server communication without a custom WebSocket layer, making everything easier. By the way, we're looking for gigs, mainly with Node/React/TS. I'd _really_ appreciate any kind of feedback! V
ViktorV··on Ask HN: Who wants to be hired? (February 2020)
Location: EU / Hungary Remote: Yes Willing to relocate: No Technologies: Node, React, C, C++, ARM, 6lowpan, rpl, python, firebase, postgres etc.. Résumé/CV: https://www.emergence-engineering.com/cv/viktor Email: viktor.vaczi.90@gmail.com

Web dev / Electrical engineer. Business oriented meaning that I don't like projects where I only have to write code without any kind of feedback. I also love mentoring. I've been programming since I was 10 years old, met with a lot of technologies.

ViktorV··on Ask HN: Who wants to be hired? (January 2020)
Location: Hungary

Remote: Yes

Willing to relocate: No

Technologies: React/Redux/Node/Typescript/Firebase/Postgres/C/C++/Python/Pytorch/Verilog/6lowpan etc...

Résumé/CV: https://www.emergence-engineering.com/cv/viktor

Email: viktor.vaczi@emergence-engineering.com

Been an EE, doing web dev currently. I'm always interested in business development, humans etc.. So if you're looking for someone in your team who's not only codes and does whatever your say, but helps developing your business / gives you feedback then I'm your guy. Feel free to get in touch, I don't think listing things is a good way to know a developer :) If you have a stack that I'm not familiar with, but it's interesting then I'm okay with joining.

ViktorV··on Women make up 54% of new students entering Iranian universities
- If it was just about pay, surely the incentive would work on boys just as much as girls?

That's the question basically. Would it :)? One side says it would the other says that genders are statistically different.

- Boys on the other hand have other ways available to them to gain economic advantage

I don't know about them. Sure, the 0.1% of them can be politicians / CEOs, but it's not "available" for people in general ( it requires a very specific personality IMHO ). I don't think 10-20-30% differences could be explained by this small portion. For most men gaining economic advantage _is_ about getting a good job, and that's the only option.

ViktorV··on Ask HN: Should I quit my job?
I think you misunderstand me. I'm not saying that you shouldn't have any responsibilities, but I'm saying that there should be a balance. In my country an average 16 year old's schedule only consists of "responsibilities" ( I would say that a responsibility can only be something that you choose, and not force into, so involuntary schooling can't be one, but anyway... ), and has almost 0 own time. I think the balance would be better at 50-50: 6 hours of school ( with homework + commuting )...

What I mean is not that school makes slackers, but school makes people believe that they are slackers, because they never had the chance to experience that they can perform without external pressure. Some people do need pressure to do things, but many people don't. I don't. I mean even if I feel pressure, that's coming from within, and not because my parents/peers would disapprove if I get a C.

But I generally agree with you, school makes people accept that they can't change their life, they need to be slaves/pressured into working ( otherwise they would slack off ).

Also, I would not say that accepting what is forced upon you is discipline. The most disciplined people I know discipline themselves without being force, and that's not something that you can learn in school.

ViktorV··on Ask HN: Should I quit my job?
It saddens me to death to hear words like: "To not stick to a schedule/routine once I am solo" from hyper-motivated people. It makes me hopeful to see that you're self-aware enough to mention other people's optinion as a fear factor.

This kind of social conditioning from the school system / society combined with never letting people do what they really want because they have "responsibilities" from the age of 5 is what keeps everyone in check... Go to uni ( no you can't take a year off ), go to work ( why take a year off? You are a slacker... ) etc. ( not to mention that you have no other option than to endure school until you're 18 with no saying what you want to do, and making it almost impossible to do shortcuts in that, even if you're capable ).

My opinion: people are usually want to do things. The school system makes you believe that the only reason people work on things is because they are forced to do is pure bull. People who still have these creative feelings at 29, after going trough all of these things are hyper self-motivated individuals, who don't need any external force to do things ( usually, of course there might be exceptions ).

Yes, after you quit your job you might slack off for a while, and you won't be productive. That might be because your mind needs it, or you might have thoughts in your mind ( because of the fears you've listed ), that block your creative process.

I had similar issues, but I've told myself that I'm not going to do anything but play video games for two weeks. After day 3 I didn't do any playing, and went trough 3 weeks of robotics lessons in two days without forcing myself.

The question of routine: I know this is not a popular opinion, but I think you don't necessarily need a routine, you will just do it, because you want it. Believe in yourself, what I mean is believe what you think of yourself, and try not to let these pressures in, which makes you believe that the slacker is in you. It is not in you.

You have 5 years of savings. Try it for a year! I mean, maybe you become homeless when you're 60 because of this decision ( worst case ). What do you want to be, a 60 year old homeless who made a gut decision, and it didn't work out, or a 60 year old man who never followed his heart?

I _really_ wish you the best!

ViktorV··on OpenDroneMap – Simple Images into 3D
I don't think it uses GPS for that. You can match two partially overlapping images. From the movement of the feature points in the overlapping areas you can calculate your camera orientation, and thus the 3d point cloud of feature points ( or something close to this ). I think it is called structure from movement, the readme links a paper, maybe it's worth reading for you.
ViktorV··on On the death of my family's dairy farm
I never quite understood this. I'm from eastern EU, I don't consider my country "poor", but people who are on the bottom of the economic ladder do not eat beef here ( cheap beef is ~4usd/lbs, chicken thighs are 1.5usd/lbs ). Maybe it's just my ignorance, but for me this sounds equally ridiculous to someone who expresses his concerns about how poor people could afford lobsters if the price goes any higher. Pure meat is expensive, and it's a luxury, not a necessity.

The prices of meats are roughly equal to the US and making 20k$/yr makes you rich here, money won't be a limiting factor when it comes to food. Avg. salary in Missisipi is 40k$/yr, and that's the lowest one.

Of course you can't eat out in the nicest places every day from that salary. This is what constitutes being poor in the US ( not being able to do that )? You can always cook at home, and it's very cheap, is the price of the food really a big weight for people in the US ( let's say the bottom 40% )?

Maybe being poor is just being poor compared to others in your area, and it's mostly a mental thing. I lived on 250usd/month and life was good. Went to the farmers market, cooked my own food, I felt spoiled by the food choices I could make. I can make amazing food from various intestines, the taste is amazing, cheap as hell, and it's the best quality protein you can get your hands on for example.

ViktorV··on Modern Robotics
I've read the book / finished the course. What this course doesn't teach you: getting sensor data, figuring out the environment ( this part is called mapping ) from your sensor input ( for ex. locating feature points / getting 3d position of these points from a stereo camera ), locating your own position from the sensor data. In short it doesn't teaches you SLAM ( simultaneous localization and mapping ), which is a good thing, because that is a very big subject.

What it teaches you:

- basics of robotics ( movement freedom, a little bit of topology )

- math necessary for robotics ( describing rotation and displacement in a single matrix, representation of rotations around a point, representation of forces on a body, solving differential equations given these things )

- robot kinematics: what will be the end position if my joint angles are x ( forward kinematics ), what should the joint angles be if my end position is x ( inverse kinematics )

- robot dynamics: same thing like kinematics, but positions => forces/torques. I think this is the hardest part of the whole subject. Although these problems can be solved in a close form, it's not practical, and you'll need some physics knowledge to be able to comprehend everything. Nothing really fancy, it's just needs more time if you physics is not up to this level.

- control: controlling those robots with motors. Describes feedback / feedforward control. In short: if you have a good enough model, then it's not that hard to control a robot, since you only have to control the 'difference' between your model and reality.

- Path planning with obstacles

- Generating control for paths ( your robot has physical constraints, for ex. it takes time to accelerate. You have to take those things into considerations )

- How to make your robot follow a path / how to make paths with physical constraints ( for ex. a car can not go sideways )

- Grasping

I'd say the book is pretty awesome, it's between the line of academic-too high level, and in a good way. You won't be a pro after reading it, since almost every problem gets harder in reality, but you'll get a good enough understanding which will make diving into a subject easy. Lot of excersizes.

Also, it is very readable, I haven't lost myself in any of the parts. Another good thing I've found that it's easy to just skim trough the book, and have general understanding. The youtube videos help a lot with that, I'll suggest you watch them before/after reading a chapter.

ViktorV··on Peter Thiel Parts Ways with Silicon Valley
You just named some of the beliefs that you can't say. Basically you agree with Thiel.

One more thing to note: you've called the guy "pro-authoritarian/pseudo-monarchist". Is this how he describes himself ( I guess no )? I grew up in a country with strong far-right culture. Nazis are calling themselves nazis.

ViktorV··on Peter Thiel Parts Ways with Silicon Valley
The taboo is that differences between groups of people could be caused by something else than systematic oppression ( for ex.: biology/genetics, or the culture of that particular group ).
ViktorV··on Eric Weinstein’s Four Quadrant Model
Indeed. But it doesn't mix moral judgement with policies.
ViktorV··on Show HN: How to store a set of four 5-bit values in one 16-bit value
I think this is not true for single bits this way.
ViktorV··on List of oldest companies: Before 1300
I suppose that the company has to be functioning in the present too.
ViktorV··on List of oldest companies: Before 1300
I think the rule is that the company has to be functioning in the present too.
ViktorV··on Trends to Avoid When Founding a Startup
Sorry to be that guy but this kind of "elitism" seriously bothers me. I've seen this thing in almost all of the fields related to CS like "you have to spend 16 hours a day for 10 years to understand assembly" when I know a guy who became a malware expert in 4 years ( winning world class tournaments with his team ). This thing is very discouraging, and it is false. You stated a problem which is hard to solve, but 99% of problems are not like this. Like: - tell what kind of mineral deficiency a plant has? - what kind of bug do you see? - what kind of plant do you see? - is this thing broken ( MRI or X ray )? - what kind of musical notes are in a waveform?

See how far they get. A talented guy can solve these within one year.

ViktorV··on Building a Home Aquaponics System: The Basics
I've been thinking about BSFL for aquaponics and there is one problem: warm blooded animal feces should never get into the water. If it could then you wouldn't need fish btw. I don't know how many E. coli bacteria would survive the BSFLs. I guess this could work for your home, but I would not risk that. Of course you can test the water, but no one did that yet as far as I know.
ViktorV··on A 400-year story of progress – How America became the world’s biggest economy
I just wrote you a mail about that.
ViktorV··on China sees new world order with oil benchmark backed by gold
I'm just curious: could you give me an example where a 'crazy conspiracy theorists' explain and predict the war against Afghanistan, Iraq etc..? I mean articles which predate the situations.
ViktorV··on Let’s Use Hard Science to Help Tech Companies Advance Women
You were right on calling him out with his opinion. But you make the same mistake:

> But here's the thing: it's not mastermind feminists who are driving this. It's capitalism.

"Have you conducted any kind of surveys or polls? Or are you just making up whatever fits your biases?"

To be honest: It is probably a mix of the societal pressure from feminists, and you are right capitalism too. The hard thing is that this is not hard science, no one can know the real ratio of the two. For me it seems you're stating this like every societal changes root was better productivity ( communism, French revolution ? ).

> The idea that women can thrive in law, medicine and hard sciences but they can't master CSS is laughable. I don't see women thrive in math, physics, engineering science, but I might be wrong. Biology is a good counter example though.

To be honest I think it is perfectly possible that you are right in everything! But I'm also sure that there is no human being on this planet who could say that he understands this problem 100% while being fully rational, and not let the emotions punch trough here and there.

The point of my comment is that: I see one side as "There might be other factors" and the other is "There are no other factors". The second one is a much harder statement.

ViktorV··on Google Fires Employee Behind Controversial Diversity Memo
The sad part is that underworld nazi trees would make a subculture which will be much worse than it would be if you actually talk with them.

Another part: this is a fairly left leaning site ( which I love! It is hard to find well argued leftist talking points as a libertarian ), and I'm not leftist. I get positive points in sum, which means that the majority of people are agreeing with me ( or maybe just see that I'm not trolling...). And this is not 4chan or not even reddit.

Sadly Donald Trump won the election. This strategy doesn't work if a very big chunk of the society are 'nazis'. You have to talk to them.

ViktorV··on Google Fires Employee Behind Controversial Diversity Memo
I was only talking about a possible statistical difference, which might be that significant. A quick search lead to a paper[1] which says the average is ~110, which is not insignificant. In my perception the 'left' side states that there is no other factor than bias against women ( or I haven't seen any other argument ). The original document here stated that sexism exist but there might be other factors too, and apparently that was a problem. [1] http://www.ssc.wisc.edu/cde/cdewp/98-07.pdf
ViktorV··on Google Fires Employee Behind Controversial Diversity Memo
I was referring to gender norms for women + systemic bias against women as patriarchy. You are right, nobody wrote that explicitly, I just don't want to write a wall of text :) Hence the /society part.
ViktorV··on Google Fires Employee Behind Controversial Diversity Memo
I don't know what is the IQ of an average programmer, for my claim it's enough to state that it is over the average of the population. 130 was just a number, it doesn't really matter anyway ( for my claim ).
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