News for hackers. Stuff that matters.

samscully

Re:Why aren't smart people happier? on Thursday November 06, 2025 @06:20AM (#45833975)
The point is that you actually cannot explore a spectrum of ideas without committing immediately because you are forced to live and living forces you to commit and make moral decisions every day.
Re:A breakthrough towards the Riemann hypothesis on Tuesday June 04, 2024 @01:06PM (#40576710)
For anyone looking for an introduction to the Riemann Hypothesis that goes deeper than most videos but is still accessible to someone with a STEM degree I really enjoyed this video series [1] by zetamath.

I understood everything in Profesor Tao's OP up to the part about "controlling a key matrix of phases" so the videos must have taught me something!

[1] https://www.youtube.com/watch?v=oVaSA_b938U&list=PLbaA3qJlbE...

Re:Cutting a 700 Carat Rare Valuable Gemstone [video] on Sunday March 31, 2024 @07:07PM (#39889054)
This video [1] shows laser cutting, 3D modelling, and hand grinding of diamonds in a diamond factory. They discuss when and why they use laser cutting machines a bit.

[1] https://www.youtube.com/watch?v=YMyPo-MEvMA

Re:Jaccard Index on Monday March 20, 2023 @06:34AM (#35229623)
The book Mining of Massive Datasets [1] has useful information on building an efficient similarity index using Jaccard/minhash. I would also recommend Otmar Ertl's papers on extensions of minhash that approximate Jaccard better in certain situations, e.g. superminhash [2].

[1] http://www.mmds.org/ Chapter 3 [2] https://arxiv.org/abs/1706.05698

It does appear to be true for humans. Though interestingly there isn't a correlation between species size and cancer risk [1].

[1] https://en.wikipedia.org/wiki/Peto%27s_paradox

Re:My Experience as a SWE Intern at Goldman Sachs on Saturday January 08, 2022 @12:52PM (#29854170)
There are infinite shapes that cannot fall down the matching hole, but the circle is the easiest to manufacture. A circular cover is easier to manufacture than e.g. a Reuleaux triangle shaped one.
Re:MIT moves all classes online for the rest of the semester on Wednesday March 11, 2020 @09:33AM (#22545653)
My halls at Imperial College had double and triple shared rooms [1]. Looks like they don't use those buildings as halls any more though.

[1] https://www.imperial.ac.uk/centenary/memories/JoaoCabral.sht...

Re:SEO case study: 8k to 200k monthly organic traffic on Thursday February 06, 2020 @10:33AM (#22256739)
Here are some notes I made when I worked for a company that did very well in SEO. This was a few years ago now, so this might be horribly out of date now.

Hygiene factors

- Never expose an error page to Google. - Never expose an empty page. - Make sure all content is visible on first page load (e.g. not behind pop ups). - Show the same content to Google as to users. - Make sure all relevant content is in the HTML (not loaded dynamically). - Make sure page load times are good.

Keywords

- Research keywords you need to match. - Build database of search terms you wish to match, grow and improve this database over time. - Carefully curate pages, their URLs and metatags to match these keywords. - Use this database to choose which pages to expose to Google and make sure that all links and pages have the correct follow/nofollow attribute. - Steadily grow the content you expose to Google over time, keeping the quantity and quality of content on pages exposed to Google high.

Site structure and internal links

- Organise your site in a shallow tree structure. Top level pages should have many links to lower level pages. - All levels of the tree should have keyword rich content which is useful to users. - Not every level of the tree needs to be visible in the Google search results, it is mostly to make things easy for the crawler.

External links

- Use PR and social media to generate good backlinks for your site. - Use social media like reddit, pinterest and others as well as facebook and twitter. - Do not generate fake backlinks, if Google thinks you are doing this they will give you a severe penalty.

Submit your sitemap

- Submit your sitemap in Google webmaster tools and make sure it is kept up to date at least weekly.

Bounce rate

- Carefully monitor your bounce rate and time on site for users coming from Google as these are key factors in Google rankings.

Click through rate

- Use descriptive and relevant titles and metatags to improve the click through rate from the Google search results to your site. - PR, social media, advertising and other channels can improve brand awareness that in turn improves click through rate. - Regularly check a selection of searches that you rank on to assess the quality of your Google search listings.

The ad business would pay the search business for ad placement. The search business would also be free to auction ad space to other providers.
Vast AI (https://vast.ai) are good, 1x GTX 1080 comes to about $170/month. You are charged by the hour unlike Hetzner.

There are obviously downsides to renting time from random individuals though, so it's not suitable for a server-like workload. Good for development notebooks or training.

Re:How to pick a random number from 1-10 on Saturday June 29, 2019 @10:57PM (#20316066)
Empirically, from running a quick script on the data in the article, it seems like you only need to sample 5 numbers to get a distribution that looks uniform using this "sum mod 10" method.
Re:VMware to Acquire Bitnami on Wednesday May 15, 2019 @10:27AM (#19919705)
I think they might mean "double trigger" acceleration, where the options vest automatically on change of control.
You pay the person you borrow the stock from a fee.
Re:Small ads sex trafficking: the battle against Backpage on Tuesday July 04, 2017 @11:31AM (#14696433)
A core Libertarian value is individualism. So something like trafficking would be anathema to any Libertarian. Furthermore, I'm sure many would acknowledge that under a certain age it is not credible that any child has the ability to choose prostitution.

I'm not a Libertarian myself, but wanting to reduce the power of the state doesn't mean you believe in slavery.

Ask HN: Information on the impact of big data, AI, etc on consumers?

I am researching the impact of data technology, in particular, the risks facing consumers. I can't name the client but I think this could be a big opportunity to spread more accurate information to the general public.So what are the best books, articles, videos and other resources for explaining these topics to a layman?

( Read More... | no comments | 2 points | on HN )
Re:Ask HN: A good primer on cryptocurrencies? on Thursday June 29, 2017 @03:39AM (#14661466)
I've been reading "The Business Blockchain" [0], it's been good so far.

[0] https://www.amazon.com/Business-Blockchain-Practice-Applicat...

Re:Differential Privacy on Friday June 23, 2017 @03:29PM (#14622064)
The thresholdout method [0] for preventing overfitting on a test set is an interesting application of this.

Here's a talk on differential privacy applied to the overfitting problem [1]

[0] http://andyljones.tumblr.com/post/127547085623/holdout-reuse

[1] https://www.youtube.com/watch?v=9mqXjdnZA18

Re:How much do hedge fund traders earn? on Wednesday May 10, 2017 @04:48AM (#14306815)
There is very little demand for professional athletes so training to a very high level in mathematics or finance is a much less risky proposition.

Older »