timshell

7 ms·

31.
by timshell 1y ago
> Curious that you can "mix" PT & EU functionals (with perceptron) but not the corresponding "decision-making mechanisms"..? Great push. We actually can't make any mechanistic claims from the data/math i
32.
by timshell 1y ago
Great question! One of the core results of this paper was to explain this discrepancy. Basically, we found a 'mixture of theories' - a hybrid of prospect theory and expected utility theory, where people essentially arbitrate betwe
33.
by timshell 1y ago
I'm one of the co-authors of this article. The TLDR of this paper: You can generalize theories of decision-making into broad functional forms and then apply gradient descent to find the best parameters for that functional form. For exa
34.
Reproducing prospect theory with 'differentiable decision theories'(science.org)
39 points by timshell 1y ago|8 comments
35.
by timshell 1y ago
I think a common misconception of Moneyball is that it's about analytics. The broader lesson is that people need to systematically evaluate undervalued assets in sports/business etc. One of the interesting 'post-Moneyball&#x2
36.
by timshell 1y ago
I think this will be a positive effect of the rise of AI agents. We’re going to have a much different distribution of automated vs human traffic and authentication/methods will have to be more robust than they are now
37.
by timshell 1y ago
Happy to help if I can :)
38.
by timshell 1y ago
> These new tasks are based on the concept that humans are dumber than AI agents, making more mistakes and showing more randomness. Hi this is incorrect. Different =/= dumber. The insight is that humans and computers have different
39.
by timshell 1y ago
Section 3 anticipates and addresses this objection. The ultimate challenge is to replicate end-to-end natural human cognition, which is currently an unsolved and hard problem (and also not necessarily the main focus of AI researchers).
40.
by timshell 1y ago
Google was successful in creating a labeled dataset for computer vision. That’s different than bot farms beating captchas via computer vision because there exists a financial incentive
41.
by timshell 1y ago
me and you both
42.
by timshell 1y ago
Yup, Worldcoin has been the one of the efforts in this space. We're trying to have a frictionless, less privacy-invasive method than biometric scanning
43.
by timshell 1y ago
Yes and no. Traditional CAPTCHAs didn't cause bot farms to advance computer vision
44.
by timshell 1y ago
Agreed. Section 3 takes the idea to the extreme -- can a bot replicate human cognition? Traditional OCR CAPTCHAs were a good 'measure' that couldn't be fully gamed. That is, while the rise of computer vision made them eventua
45.
by timshell 1y ago
That's definitely been the marketing. The point of Section 1 is to refute that point
46.
Bot or human? Creating an invisible Turing test for the internet(research.roundtable.ai)
141 points by timshell 1y ago|177 comments
47.
Roundtable (YC S23) Is Hiring a President / CRO(ycombinator.com)
1 points by timshell 1y ago
48.
Roundtable (YC S23) Is Hiring a Member of Technical Staff(ycombinator.com)
1 points by timshell 1y ago
49.
by timshell 1y ago
Yup, we had this with open-end analysis (see: https://www.producthunt.com/stories/how-to-detect-ai-content... ) We had some people use voice software to fill in survey responses. This flagged computer-generated assistan
50.
by timshell 1y ago
Here's a GIF where reCAPTCHA v3 can't detect Operator: https://x.com/_magrawal/status/1925543620217905641 'Behavioral' is loosely defined, but it seems like the behavioral tells of Operator are
51.
by timshell 1y ago
I'm a founder in this space (www.roundtable.ai; YC S23) Behavior is a big missing link. Many CAPTCHA services (including Google reCAPTCHA v3) claim to use behavioral analyses, but you can disprove this using Operator to fill out a form
52.
by timshell 2y ago
Whoa very cool, had no idea about that. I've always been intrigued to see whether there could a reconciliation between the normative replay theory and the glucose depletion theory. A paper that made me think there could be a route: ht
53.
by timshell 2y ago
This was somewhat the thesis of my dissertation. I suggested cognitive fatigue was an adaptive construct that biases people to go offline and replay their memories, and that this was decision-theory optimal from a learning / reward per
54.
by timshell 2y ago
Hippocampal replay was the main subject of my dissertation. It has been studied primarily in rodents, but there have been a lot more human studies in the meantime. My PhD proposal was to suggest that cognitive fatigue is an adaptive constru
55.
by timshell 2y ago
Thank you! > i guess at the limit this is a qualtrics competitor? and before that i guess google forms. can i use this as a strict google forms replacement? - dump data straight into a google spreadsheet? Yup, can easily deploy and dump
56.
by timshell 2y ago
Thank you!
57.
by timshell 2y ago
Cloud editor open access for today at surveys.roundtable.ai. Username: show-hn@news.ycombinator.com PW: Hackernews2024!
58.
Show HN: RoundtableJS – Open-source programmatic survey library(github.com)
49 points by timshell 2y ago|7 comments
59.
Show HN: RoundtableJS – Open-source programmatic survey library(github.com)
13 points by timshell 2y ago|1 comments
60.
Nike AI trains on game footage to simulate 1999 vs. 2017 Serena Williams(akqa.com)
3 points by timshell 2y ago|0 comments

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