HNHacker News
TopNewBestAskShowJobs

glymor

2,149 karma · joined April 28, 2008

Email address is my userid at hotmail dot com
submissionscomments
glymor··on Researchers describe how to tell if ChatGPT is confabulating
TL;DR sample the top N results from the LLM and use traditional NLP to extract factoids, if the LLM is confabulating the factoids would have random distribution, but if it's not it will be heavily weighted towards one answer.

A figure from the paper shows this better than my TL;DR: https://www.nature.com/articles/s41586-024-07421-0/figures/1

glymor··on Firefox switching to clang-cl for Windows builds
A reply in the thread from David Major about performance:

"At the moment, performance is a mixed bag. Some tests are up and some are down. In particular I believe Speedometer is down a few percent."

"Note however that clang-cl is punching above its weight. These builds currently have neither LTO nor PGO, while our MSVC builds use both of those. Any regressions that we're seeing ought to be short-lived. Once we enable LTO[1] and PGO[2], I expect clang to be a clear performance win."

[1] "LTO (Link Time Optimization) is a method for achieving better runtime performance through whole-program analysis and cross-module optimization." http://blog.llvm.org/2016/06/thinlto-scalable-and-incrementa...

[2] PGO = Profile Guided Optimization

glymor··on Proposed Tax Reform Stands to Impact Equity and Performance-Based Compensation
> Similarly, awards with vesting triggers based on exit events such as an initial public offering or change-in-control would be taxable on grant unless they require the recipient to be employed through the liquidity date

Double trigger RSUs are popular in late stage unicorns where the exercise price for ISOs have already hit a high level but the stock isn't liquid enough to sell to cover the tax as they vest.

A lot of people might be affected, I wonder if existing grants are grandfathered in?

glymor··on Fast: A Transducer-Based Language for Tree Manipulation (2014) [pdf]
I found this tutorial a little more approachable: http://rise4fun.com/Fast/tutorial/guide

Fast! is a Microsoft Research language for tree transforms, the cool part is the "deforestation" where a sequence of functions can be transformed in to a single function.

What makes this cool is it isn't "runtime" composition; the generated C# code does the transformation in a single pass. For example a sequence of maps and filters would only loop over the list once.

glymor··on Mandela was right: the Foreign Language Effect
It's worth noting here that they demonstrated this effect with language learners i.e. it's very likely that the students had to labouriously work out the foreign language questions.

Basically they've demonstrated that if people spend a lot more time on a question they answer less emotionally (which seems like it would be true independent of the language).

If they can demonstrate the effect still holds with 2nd language speakers with native level proficiency then this would be a lot more interesting result.

glymor··on Oculus VR’s New “Crystal Cove” Prototype Is Kind of Amazing
There's some guys in Seattle doing this using motion-capture cameras for the positioning:

  I answer that I'm terrified of running into something in the real world while my
  vision is obscured, but they insist I'll be fine. It turns out the game space's
  virtual walls correspond to the real ones in the admittedly small office I occupy
  in meatspace.
http://arstechnica.com/gaming/2013/11/on-the-move-vrcade-com...
glymor··on Sponsor Me, If You Will
It's probably the "hyphens: auto" [1] in the CSS that's doing it. No support in Chrome yet [2].

[1] http://www.w3.org/TR/css3-text/#hyphenation [2] http://caniuse.com/#feat=css-hyphens

glymor··on Bandwidth needs halved by new compression written in Go
> What sort of sites do you think it doesn't apply to?

Single page webapps. In those cases the html/js is normally static and already CDN'ed and the data is a JSON API which varies on a per user basis.

There would be some gain as the dictionary would learn the JSON keys but I doubt it would be very dramatic vs deflate compared to the content sites referenced in the article.

glymor··on Bandwidth needs halved by new compression written in Go
How large is the per site cache? Are cookies part of the hash (and if so how do you strip meaningless cookies)?

Otherwise the this is more compelling for content sites like the referenced 4chan. But still very cool.

glymor··on Flight: A lightweight, component-based JavaScript framework from Twitter
This looks like Twitter's version of Web Components?

You might have heard of it shadow DOM etc. Basically the idea is to be able to add GUI components eg <progressbar> that are as integrated as the native ones are.

https://dvcs.w3.org/hg/webcomponents/raw-file/tip/explainer/... https://plus.google.com/103330502635338602217/posts

Mozilla's X-Tags implementation seems closer to the goal though: http://www.x-tags.org/ IIRC it can do this because it's using Object.observable internally to detect DOM changes.

ie with X-tags you don't need the javascript definition part, just: <x-map data-key="39d2b66f0d5d49dbb52a5b7ad87aea9b"></x-map>.

glymor··on Scala 2.10 now available
AFAIK slick doesn't have an async interface. There's an open issue about it here: https://github.com/slick/slick/issues/44
glymor··on TypedJS: Sanity Check your JavaScript
At first glance this is a fuzz generator not a type checker.
glymor··on Molecular Pathways in the Brain May Reveal the Best Learning Strategies
The optimal protocol, it turned out, was not the usual, even-spaced one, but an irregular series of two serotonin pulses emitted 10 minutes apart, then one five minutes later, with a final spritz 30 minutes afterward.

Seems similar to http://en.wikipedia.org/wiki/Spaced_repetition systems.

glymor··on Michael Arrington Resigns From Techcrunch
If the paywall is affecting you:

TechCrunch founder Michael Arrington is resigning as editor of the popular technology blog, and will run a $20 million venture-capital fund backed by TechCrunch-owner AOL Inc. and several venture-capital firms.

Mr. Arrington "will run the fund and will continue to write for TechCrunch, but will have no editorial oversight," said an AOL spokesman. Erick Schonfeld, who has served as co-editor in New York, will become interim editor while AOL searches for a replacement for Mr. Arrington, the spokesman said. AOL purchased the site last year.

Mr. Arrington's new fund, called CrunchFund, closed Thursday with $20 million, according to people familiar with the matter. AOL leads the limited-partner group, which includes a long roster of venture firms that kicked in $1 million each: Austin Ventures, Kleiner Perkins Caufield & Byers, Greylock Partners, Redpoint Ventures and Sequoia Capital. Several individuals contributed money, including Marc Andreessen and Ben Horowitz of the venture firm Andreessen Horowitz; general partners at Benchmark Capital; angel investors Ron Conway and Kevin Rose; and Yuri Milner of Russian firm DST Global.

It isn't immediately clear what is the fate of AOL's venture-capital arm, AOL Ventures, which has made recent seed investments in start-ups such as spam-defense company Impermium and price-tracking service Shopobot.

Mr. Arrington's partner in the fund is Patrick Gallagher, who has been a partner at VantagePoint Capital Partners since 2008.

Mr. Arrington wasn't immediately available for comment. He posted a message on Twitter after news of the fund broke: "slow news day."

Mr. Arrington, a former lawyer who is known to be well connected in Silicon Valley, started TechCrunch in 2005. The site built up a following for its coverage of young tech companies.

Long an angel investor himself, Mr. Arrington announced on TechCrunch in 2009 that he would stop making investments in start-ups due to a perceived conflict as both publisher and investor. It's "a weak point that competitors and disgruntled entrepreneurs use to attack our credibility," he wrote at the time.

But in April this year, after AOL acquired TechCrunch, Mr. Arrington announced he was investing in start-ups again, while also becoming a limited partner in venture funds Benchmark Capital and SoftTechVC.

Mr. Arrington has often said that transparency and full disclosure keep things above-board when his blog writes about companies he has some financial stake in.

glymor··on How to get $12 billion of gold to Venezuela
He's moving the gold because:

* He's worried that sanctions etc could freeze it

* He want's to be able to sell it without being clear about it (so he can buy the next election or make a personal nest egg with it).

Venezuela's bonds moved 50 basis points on this so the markets are obviously worried that the gold's going to start evaporating once it's under his control.

glymor··on Selenium 2.1 Released
mattyb submitted it: http://news.ycombinator.com/item?id=2742718
glymor··on ASUS Eee PC X101 runs Linux, costs only $200 (video)
The windows 7 version costs $310.

Coming out in July.

Specs: "1.33GHz, single-core Atom N435, a six-cell battery, and a small SSD (probably of the 16GB variety)"

http://www.engadget.com/2011/06/27/slim-asus-eee-pc-x101-to-...

glymor··on Show HN: Cyberspace - my new web browser for iOS
Just got it. I like the focus on working though a bunch of links. Currently for a site like hacker news I open a lot of tabs but I always have to switch back on opening the tab and it uses up a lot of memory loading them when I not actually going to read them yet.

iCab solves the first problem as it can auto background tab any links to a different domain. This is a actually smoother than the flow here: tap-hold-selecting is a slow operation I don't want to have to do it for every link on a page.

Instead I'd love a toggle that turns on add to queue as the default operation for the duration of that page. (This would be an improvement on the iCab option as the background loading is easy to forget about and then immediately becomes confusing.) The toggle should be a main button like the plus and would cease to apply if you navigate anywhere else or start going though your queue.

Another option would be certain pages always open in auto add to queue mode (eg set on the the bookmark). And some people might prefer add to instapaper as the default action etc.

EDIT: I actually really like this. Feels very smooth.

glymor··on The Best Anti-Penny Rant Ever?
2GBP is 3.09USD currently.
glymor··on Charles Stross: Where we went wrong
Your forgetting string literals which are part of the language.
glymor··on Insufficient data
"Conservative politicians in the US...

I think these ideas are mostly delusional because they rely on a fundamental misapprehension about the world around us — namely that we live in a society that can be made simple enough to comprehend.

Let's take a look at the superficial structures around us..."

He presents a characterization, says these ideas are delusional because, then leads on to his observations. It's not unreasonable to think he was making argument.

The straw man he creates is equating anyone who wants to reduce state expenditure as wanting or believing in an over-simplified world.

That said, the characterization was insulting to anyone on the right, and about half seem to have taken it as their main takeaway and about half seem to have passed it straight by. So that might be why.

glymor··on Insufficient data
It's a shame his politics are so polarizing and that he doesn't really develop conclusions as the juxtaposition of society's complexity and how humans manage complexity is interesting and does have political ramifications.

Humans seem to manage complexity by creating categorizations/abstractions until it's reduced to a workable amount. This can lead to a kind of fractal experience where zooming into any area presents the same seeming level of complexity as the whole did.

If you haven't made that particular zoom it's tempting to assume it's as simple as the assumption makes it look. "It's just" or "it should be easy to" are phrases that computer programmers are fairly familiar with and aren't overly fond of.

The political side would seem to be that if there's a lot of embedded complexity in pretty much anything then trying to change something, replace it with something cleaner or clearer, is going to be far harder than it would seem. Without trying to make the same mistake Stross did, President Obama and the disappointing gap between rhetoric and reality would seem to be a current example.

glymor··on Insufficient data
He successfully defeats his straw man. But aside from greenpeace it's not a correct characterization.

Generally trying to pare down the size of the state, given it's own natural processes cause it to increase, would seem necessary simply to achieve homeostasis. In the last century the long term tread has been strongly on the side of increase but it can't always be or eventually the tax burden would reach unity.

The political side of this is very transparently Scottish left wing. "... among the UK's conservatives we see an almost masochistic addiction to cuts in public spending" the phrase "masochistic addiction" is a current Labour talking point. The actual cuts amount to 2.2% of GDP by 2014-15 added to the the 4.1% Labour had already set.

glymor··on DIY Pixel Qi screens - available now
It's 3072x600 [1]. This is actually exactly the same as any 1024x600 LCD it's just that in e-paper mode that extra horizontal resolution is more usable as the rgb sub-pixels are in b/w.

But the OS probably never sees it as 3072x600 (or it would have to be changing the resolution and aspect ratio on the fly). Also it's not necessary as AFAIK the sub-pixel font rendering would amount to the same thing.

[1] http://netbooked.net/blog/lenovo-s10-2-w-pixel-qi-display-ce...

glymor··on iOS 4 Update Now Avaliable
Direct download links: http://www.engadget.com/2010/06/21/ios-4-now-available/comme...
glymor··on Apple releases newly designed Mac Mini
In 2008 510GBP was around 1000USD. Now 500GBP is 750USD and 650GBP is a 1000USD. It's the exchange rate that's changed not Apple's price.
glymor··on 'Artificial life' breakthrough announced by scientists
Better write up: http://arstechnica.com/science/news/2010/05/first-functional...
glymor··on Great Set of Sequence Diagrams Explaining HTTP over TCP/IP
They could release the original file formats in addition to the pdf. This is like a picture of a thing; it seems like you could get at it but you can't.
glymor··on Great Set of Sequence Diagrams Explaining HTTP over TCP/IP
b) that weren't ascii

On the other hand PDF's don't let you extract structured information without effectively reverse OCR'ing it.

For example Alan Kay's Steps Toward the Reinvention of Programming project generates it's TCP/IP stack from the ascii art in RFC 791:

http://www.moserware.com/2008/04/towards-moores-law-software...

glymor··on Ubuntu 10.04 Released
Previously they had -rc in the filename.
Page 1 of 7Next →