andrewp123

10 ms·

1.
by andrewp123 2y ago
I don’t know how any experiment like this could be taken seriously. Your action could change 15 minutes apart if you feel like having sugar, if the guy felt intimidating or not, if the last thing he said seemed friendly or if his facial exp
2.
by andrewp123 2y ago
Algorithms are graphs, data structures are graphs, networks are graphs, relationships are graphs. Let’s use text to describe everything!
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by andrewp123 2y ago
I’m not sure how interesting this is - of course rotation causes the paths to differ and become measurable. I’ve been wondering about sending photons away from earth and having their paths bend due to gravity (and later have them interfere)
4.
by andrewp123 2y ago
I was thinking of creating something like this but centered around posting one’s intuitions on research, instead of the papers themselves (which are hard to read, even the list of titles are hard to parse). But researchers are afraid to say
5.
by andrewp123 2y ago
I just wanted to comment on how good the homepage is - it's immediately clear what you do. Most people working with "combinators" would feel a need to use lots of scary lingo, but OP actually shows the simple idea behind the
6.
by andrewp123 2y ago
The word dynamic was popular in naming around that time - dynamic programming is another example (1950s). Somehow just by internalizing the old meaning of the world “dynamic”, I feel I have a better idea of what the world felt like back the
7.
by andrewp123 2y ago
A powerful method in math is to assume the thing you're looking for is continuous, in which case you can write it F(n) = a0 + a1 n + a2 n^2 + ... . You can solve Fibonacci by writing it as a0 + a1 n + a2 n^2 + ... = a0 + a1 (n-1) + a2
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by andrewp123 2y ago
I can't imagine you believe P=NP.
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by andrewp123 2y ago
Always a bad idea to destroy musical instruments.
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by andrewp123 2y ago
I just tried finding a good resource and I can’t. All of them are mile long page scrolls… I don’t know how they have so much stuff to spew. Qiskit had amazing lessons with cool illustrations (although they did spew at the end) but I can’t e
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by andrewp123 2y ago
Yep, they're essentially giant brute force machines. You can find the period of a function by passing all the inputs through it at once and destructively interfering the result. Why is there a speedup in quantum, though? Why can't
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by andrewp123 2y ago
Correct - superposition doesn't fork the world - measurement does. And correct, you can't communicate with the other universe after the split has happened [1]. I'm glad you mentioned that quantum computers can't solve NP
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by andrewp123 2y ago
If you roll a regular coin without any quantum effects, every version of you will either see only heads, or only tails. You need quantum in order to make the choice nondeterministic.
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Unix forking the universe by running IBM's free online quantum computer(parel.es)
58 points by andrewp123 2y ago|46 comments
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by andrewp123 2y ago
It's a similar idea. The only difference is that if the event is quantum, the universe is choosing for you (otherwise the flip is deterministic).
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Show HN: Deriveit.org – A smart resource to master LeetCode efficiently(deriveit.org)
2 points by andrewp123 2y ago|0 comments
17.
How & Why I use IBM's Quantum Computer to Make Decisions(parel.es)
1 points by andrewp123 2y ago|2 comments
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by andrewp123 2y ago
If you want a more efficient way to practice, I’ve been working on https://deriveit.org/coding/roadmap#note-215 . It’s LeetCode site that’s -organized intelligently -has simpler explanations than you find online We’re s
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Using quantum computers to make meaningful decisions in real life(parel.es)
1 points by andrewp123 2y ago|0 comments
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by andrewp123 2y ago
Wow, shipfa.st boilerplate is really taking off!
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by andrewp123 2y ago
DeriveIt has ~100 questions and ~40 lessons. It's up to you to decide how much practice you need, but users typically aren't limited by "not enough" practice problems. Not sure if it's worth mentioning, but we made
22.
by andrewp123 2y ago
I've been working on a more effective leetcode site - https://deriveit.org/coding/roadmap . The goal of our site is to teach smart people how to quickly master leetcode. We put in a year's worth of thought to
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by andrewp123 2y ago
Always depressing to see a paper like this. I can almost guarantee one could make this whole thing into a two-page document with a clearer vision and followable to, well, anyone else. The purpose of academic papers is to file a claim to own
24.
by andrewp123 2y ago
It’s really easy to come up with KMP. Just write an algorithm that searches for a substring p in string s. Make your algorithm efficient by sliding two pointers down s to find the biggest possible match, often called “sliding window”. You
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Coding Interview Cheat Sheets(deriveit.org)
2 points by andrewp123 2y ago|0 comments
26.
by andrewp123 2y ago
I’ve been working with TypeScript and it’s literally wrong half the time. This code is 100% correct according to TS: x: number[] = [] y: number = x[0] The array type is missing information about the length of the array, and types are very o
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by andrewp123 2y ago
You’re definitely onto something. The author starts a sentence with the words “In so far as”.
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by andrewp123 3y ago
I think you're missing out on the time it takes to build the tree in the first place, which is O(M), equal the space complexity. People usually ignore this cost as a "preprocessing" factor, but it's a cost that's
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Big O Insights(deriveit.org)
8 points by andrewp123 3y ago|5 comments
30.
by andrewp123 3y ago
This is really cool. Would love to see a basic analysis of the physics - I know it's just basic angular momentum and torque. Are reaction wheels somehow intuitive and don't require you to think about these things?

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