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timhigins

853 karma · joined June 4, 2017

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timhigins··on RenderFormer: Neural rendering of triangle meshes with global illumination
Thanks for these comments! Seems their measurement of Blender is off and we need some more in-depth benchmarks.
timhigins··on RenderFormer: Neural rendering of triangle meshes with global illumination
This has been researched quite a lot with the adjacent task of structure from motion (2d videos) - see NeRFs, Gaussian Splatting - and now there are a few models that do 3d from single 2d images fairly well.
timhigins··on RenderFormer: Neural rendering of triangle meshes with global illumination
The coolest thing here might be the speed: for a given scene RenderFormer takes 0.0760 seconds while Blender Cycles takes 3.97 seconds (or 12.05 secs at a higher setting), while retaining a 0.9526 Structural Similarity Index Measure (0-1 where 1 is an identical image). See tables 2 and 1 in the paper.

This could possibly enable higher quality instant render previews for 3D designers in web or native apps using on-device transformer models.

Note the timings above were on an A100 with an unoptimized PyTorch version of the model. Obviously the average user's GPU is much less powerful, and for 3D designers it might be still powerful enough to see significant speedups over traditional rendering. Or for a web-based system it could even connect to A100s on the backend and stream the images to the browser.

Limitations are that it's not fully accurate especially as scene complexity scales, e.g. with shadows of complex shapes (plus I imagine particles or strands), so the final renders will probably still be done traditionally to avoid any of the nasty visual artifacts common in many AI-generated images/videos today. But who knows, it might be "good enough" and bring enough of a speed increase to justify use by big animation studios who need to render full movie-length previews to use for music, story review, etc etc.

timhigins··on Designing Pareto-optimal RAG workflows with syftr
This looks super cool! Seems like a stronger statistics-based optimization strategy than https://docs.auto-rag.com/optimization/optimization.html.

I've got a few questions:

Could I ignore all flow runs that have an estimated cost above a certain threshold, so that the overall cost of optimization is less? Suppose I choose an acceptable level of accuracy and then skip some costlier exploration stuff. Is there a risk it doesn't find certain optimal configurations even under my cost limit?

How does the system deal with long context-length documents that some models can handle and others can't? Does this approach work for custom models?

Suppose I want to create and optimize for my own LLM-as-a-judge metrics like https://mastra.ai/en/docs/evals/textual-evals#available-metr..., how can I do this?

Are you going to flesh out the docs? Looks like the folder only has two markdown files right now.

Any recommendations for creating the initial QA dataset for benchmarking? Maybe creating a basic RAG system, using those search results and generations as the baseline and then having humans check and edit them to be more comprehensive and accurate. Any chance this is on the roadmap?

Cool stuff, I'm hoping this approach is more widely adopted!

timhigins··on Beyond Semantics: Unreasonable Effectiveness of Reasonless Intermediate Tokens
This paper seems to focus on highly algorithmic/puzzle-like problems, which are not the typical application domain of LLMs, using a <500M parameter model. So my hunch is "reasoning" works much better for math, coding, factual recall, and writing tasks that most LLMs actually deal with.
timhigins··on Show HN: Min.js style compression of tech docs for LLM context
> LLM could hallucinate

The job of any context retrieval system is to retrieve the relevant info for the task so the LLM doesn't hallucinate. Maybe build a benchmark based on less-known external libraries with test cases that can check the output is correct (or with a mocking layer to know that the LLM-generated code calls roughly the correct functions).

timhigins··on Google's European Search Dataset Licensing Program, GDPR, and DMA Article 6(11)
See also https://storage.googleapis.com/transparencyreport/report-dow... https://developers.google.com/search/help/about-search-data-... https://docs.google.com/forms/d/e/1FAIpQLSeVA99a3k18MkRS7tJi...
timhigins··on Ask HN: What are you working on? (April 2025)
looks great! but your linked homepage doesn't work: https://colibri-hq.github.io/colibri/
timhigins··on A single line of code cost $8000
Screen studio does make the best-looking demo videos I've seen. Any favorite alternatives? Points for free or open source.
timhigins··on Widespread power outage in Spain and Portugal
One guy simulated Australia's electrical grid for 3 years to show that the entire grid could run off of >98% renewable energy using the installed renewables with just a small amount of storage (e.g. 5 hours of average demand, ~10% of demand over the entire period).

To me this indicates that in many energy markets where renewables are sufficiently built out, the only factor for why we aren't using them more is the storage capacity and grid infrastructure to handle their variability -- and instead just running stable but dirty energy systems.

There are a lot of cool mechanical grid systems like gravity batteries (e.g. weights on a pulley system) [2] or compressed or liquid air storage systems [3] which provide cheaper storage at higher capacities and durations than electric batteries

1. https://reneweconomy.com.au/a-near-100-per-cent-renewable-gr... 2. https://www.youtube.com/watch?v=trA5s2iGj2A 3. https://www.youtube.com/watch?v=fjERw-Ol-_s

timhigins··on Show HN: OpenTimes – Free travel times between U.S. Census geographies
Can you just compute the travel times from each bus/train/tram stop and publish the individual or merged travel times? I guess the merging would be the hard part
timhigins··on Show HN: Open-source Deep Research across workplace applications
Do you think this indexing architecture would bring benefits to general web research? If implemented like: planner, searches, index webpages in chunks, search in index, response

Would you ever extend your app to search the web or specialized databases for law, finance, science etc?

timhigins··on CDC data are disappearing
Removing these records from the public internet could likely be considered illegal under the OPEN Government Data Act, 44 U.S.C. § 3506:

> (d) With respect to information dissemination, each agency shall— (3) provide adequate notice when initiating, substantially modifying, or terminating significant information dissemination products; (4) not, except where specifically authorized by statute— (A) establish an exclusive, restricted, or other distribution arrangement that interferes with timely and equitable availability of public information to the public; (B) restrict or regulate the use, resale, or redissemination of public information by the public

If these datasets were actually permanently deleted then the incident should be investigated by NARA [1]. The people responsible could be charged with a crime under 18 U.S.C. § 2071: > (b) Whoever, having the custody of any such record, proceeding, map, book, document, paper, or other thing, willfully and unlawfully conceals, removes, mutilates, obliterates, falsifies, or destroys the same, shall be fined under this title or imprisoned not more than three years, or both; and shall forfeit his office and be disqualified from holding any office under the United States. As used in this subsection, the term “office” does not include the office held by any person as a retired officer of the Armed Forces of the United States.

1. https://www.archives.gov/records-mgmt/resources/unauthorized...

timhigins··on Ask HN: Books about people who did hard things
Vaccinated: One Man's Quest to Defeat the World's Deadliest Diseases

Describes how Maurice Hilleman invented 40 vaccines, including for eight of the most common diseases in the US, over a 36 year career at the Walter Reed Army Medical Center and Merck & Co. His vaccines are estimated to save 8 million lives each year.

timhigins··on I Stopped Using Kubernetes. Our DevOps Team Is Happier Than Ever
If you have 200 YAML files for a single service and 46 clusters I think you're using k8s wrong. And 5 + 3 different monitoring and logging tools could be a symptom of chaos in the organization.

k8s, and the go runtime and network stack have been heavily optimized by armies of engineers at Google and big tech, so I am very suspicious of these claims without evidence. Show me the resource usage from k8s component overhead, and the 15 minute to 3 minute deploys and then I'll believe you. And the 200 file YAML or Helm charts so I can understand why in gods name you're doing it that way.

This post just needs a lot more details. What are the typical services/workloads running on k8s? What's the end user application?

I taught myself k8s in the first month of my first job, and it felt like having super powers. The core concepts are very beautiful, like processes on Linux or JSON APIs over HTTP. And its not too hard to build a CustomResourceDefinition or dive into the various high performance disk and network IO components if you need to.

I do hate Helm to some degree but there are alternatives like Kustomize, Jsonnet/Tanka, or Cue https://github.com/cue-labs/cue-by-example/tree/main/003_kub.... You can even manage k8s resources via Terraform or Pulumi

timhigins··on Full LLM training and evaluation toolkit
Update: While SmolLM was SOTA at the time of release in July, SmolLM 2 1.7B (which is the newest release) is not currently the best model under 2B params on https://huggingface.co/spaces/open-llm-leaderboard/open_llm_...
timhigins··on Full LLM training and evaluation toolkit
Might be worth updating the title to "SmolLM: state-of-the-art small language model trained on open datasets" (See the first table of https://huggingface.co/blog/smollm for benchmarks)

It was fascinating digging into this to find their dataset weights defined in a declarative YAML file [2]. 70% is from FineWeb/Commoncrawl but filtered using a classifier trained on Llama-70b's rating from 0-5 of the educational content of the text [3]. This is something we know small models like Phi-3 have been doing for a while, but it's great to see a fully open reproduction of it that beats their benchmarks. Definitely supports the idea you can get even better reasoning at smaller model sizes by carefully filtering and curating your training data (and generating good synthetic data from/distilling bigger models).

You can see the 450k Llama educational value scores here: https://huggingface.co/datasets/HuggingFaceFW/fineweb-edu-ll... It's interesting, I think the text with 3 scores is really good, but the 5 scores pick content that is not very reasoning or information-heavy but just mentions education or a worksheet. For SmolLM they just took the documents with scores >= 3 so it doesn't matter a ton.

2. https://github.com/huggingface/smollm/blob/9efce803bc7e37727... 3. https://huggingface.co/HuggingFaceFW/fineweb-edu-classifier

timhigins··on Perplexity AI's new tool for researching the stock market
This reads like a sponsored/promoted article. Would be nice to see a disclosure if it is or they get affiliate link revenue
timhigins··on Show HN: SapientML – Generative AutoML for Tabular Data
Any reason for using the term "generative", which may confuse readers and imply generative AI/LLMs? It's a traditional tabular autoML system, though it does learn pipelines from a corpus of Kaggle solutions, and generates pipelines with a "three-stage program synthesis approach" [1].

https://arxiv.org/pdf/2202.10451.pdf

timhigins··on Show HN: JobLens – AI-powered job search for 'Who Is Hiring'
Site is down for me, maybe the HN hug of death? Anyone else seeing this?
timhigins··on Intel Announces Aurora GenAI, ChatGPT Competitor with 1T Parameters
According to Intel's own press release, "Argonne is spearheading an international collaboration to advance the project, including Intel; HPE; Department of Energy laboratories; U.S. and international universities; nonprofits; and international partners, such as RIKEN." Maybe the headline should say "Argonne Labs announces GPT-4 competitor"

https://www.businesswire.com/news/home/20230522005289/en/Int...

timhigins··on Experimental library for scraping websites using OpenAI's GPT API
What do you mean by this, and what would be their reason for doing so? I've tested a few prompts for scraping and there have been no problems.
timhigins··on Knowledge is a region in weight space for fine-tuned language models
I find this a good overview of the topic: https://damueller.com/#/blog-post/NNLLs
timhigins··on Show HN: Controversial quiz game generated by ChatGPT
Can you publish some of the prompts that you used?
timhigins··on Ask HN: “Contact Us” Pricing
capiche.com has some good pricing data and reviews from knowledgeable users.
timhigins··on 533M Facebook users' phone numbers and personal data have been leaked online
Actually Android devices (especially older ones) are known for in many cases sending extensive data to the manufacturer on network connect. See for example: https://www.nytimes.com/2016/11/16/us/politics/china-phones-..., https://balagetech.com/android-app-phones-home-china/
timhigins··on ScholarPhi: An interactive tool for reading academic papers
Real link: https://s2-reader.apps.allenai.org/?file=https://arxiv.org/p...
timhigins··on ScholarPhi: An interactive tool for reading academic papers
Whoops, wrong link, I'll fix.
timhigins··on ScholarPhi: An interactive tool for reading academic papers
Code is available on Github: https://github.com/allenai/scholarphi

This is a project by the Allen Institute for Artificial Intelligence. I have no affiliation.

The link above is to an active demo. I'm not sure how scalable the backend is so far, so it may crash if there is significant load.

timhigins··on The Great Suspender: New maintainer is probably malicious
I'd just like to mention that if the community was determined enough we'd

1. Demand removal of analytics software 2. If no action, fork and re-publish.

Obviously folks who aren't technical/didn't see these threads wouldn't get the benefit of an update.

This is something where an explicitly pro-opensource and anti-tracking (or at least minimal tracking) policy by the browser extension stores would be valuable. The store itself could recommend the no-tracking community version instead. Of course this would have to happen on an individual basis and be carefully managed as so not to be abused.

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