Hacker News: escanor

New comment by escanor in "Show HN: Brain Frog – Can you be random enough for 11 lines of JavaScript?"

escanor — Fri, 26 Jun 2026 07:13:10 +0000

brilliant!

New comment by escanor in "Show HN: Brain Frog – Can you be random enough for 11 lines of JavaScript?"

escanor — Thu, 25 Jun 2026 08:00:20 +0000

it is:

  (async function(oracle, punch, delay) {
    async function sleep(ms) {
      return new Promise((resolve, _) => {
        setTimeout(resolve, ms)
      })
    }
    
    for (let i = 0; i < 100; i++) {
      const state = oracle._state
      const block = oracle.predictNextPunch()
      oracle._state = state
      
      punch(block === 'L' ? 'R' : 'L')
      
      await sleep(delay)
    }
  })(oracle, punch, 150)

New comment by escanor in "Show HN: Brain Frog – Can you be random enough for 11 lines of JavaScript?"

escanor — Thu, 25 Jun 2026 07:42:16 +0000

pure random player:

  (async function(punch, delay) {
    async function sleep(ms) {
      return new Promise((resolve, _) => {
        setTimeout(resolve, ms)
      })
    }
    
    for (let i = 0; i < 100; i++) {
      punch(['L', 'R'][(Math.random() * 2) | 0])
      await sleep(delay)
    }
  })(punch, 150)

"cheating" player:

  (async function(oracle, punch, delay) {
    async function sleep(ms) {
      return new Promise((resolve, _) => {
        setTimeout(resolve, ms)
      })
    }
    
    for (let i = 0; i < 100; i++) {
      punch((i + 1) < oracle.minForPrediction ? ['L', 'R'][(Math.random() * 2) | 0] : oracle.predictNextPunch() === 'L' ? 'R' : 'L')
      
      await sleep(delay)
    }
  })(oracle, punch, 150)

is it possible to do any better? i haven't fully read frog/oracle code

New comment by escanor in "An algorithm that blew up Italy’s school system"

escanor — Fri, 01 Sep 2023 15:52:35 +0000

Who does that algorithm really serve?

New comment by escanor in "Show HN: Natural Language Processing Demystified"

escanor — Fri, 02 Dec 2022 09:14:47 +0000

great work! just a note regarding tf-idf, when you mention log10: i think you're missing the point on the reason of log and most importantly base 10. namely, using log10 gives us a perspective on the number of digits of the term/document frequency. if a term "A" occurs 23 times and a term "B" occurs 50, they will have a very close representation (because both numbers are 2 digits ones).

anyway, thanks for the submission

New comment by escanor in "Understanding Python through its builtins"

escanor — Sun, 10 Oct 2021 20:57:04 +0000

> for index, item in enumerate(menu):

should be

> for index, item in enumerate(menu, start=1):

for the example to be correct :)

New comment by escanor in "Git as a NoSql Database (2016)"

escanor — Mon, 05 Apr 2021 20:34:37 +0000

yes, i see this as well. at first it was confusing, but later i understood it was the output.

New comment by escanor in "Machine Learning, Kolmogorov Complexity, and Squishy Bunnies (2019)"

escanor — Thu, 27 Feb 2020 10:22:43 +0000

My understanding is that the neural network is used to predict the "magnitude" of each eigenvector/axe (extracted by using PCA) in order to reconstruct an approximation of the original behavior.