tag:blogger.com,1999:blog-5822805028291837738.comments2019-08-20T06:52:03.585-04:00Various ConsequencesJoshua Stultshttp://www.blogger.com/profile/03506970399027046387noreply@blogger.comBlogger750125tag:blogger.com,1999:blog-5822805028291837738.post-13068214029406605642019-08-20T06:52:03.585-04:002019-08-20T06:52:03.585-04:00Unavoidably, a few voices disagree with such ideal...Unavoidably, a few voices disagree with such idealistic figures. While it presently appears that AI has at last left the shadows, not similar remains constant about responses to innovation versus human work discusses.<a href="https://www.excelr.com/machine-learning-course-training-in-Pune" rel="nofollow">machine learning course in pune</a>tim markhttps://www.blogger.com/profile/05139774995684177280noreply@blogger.comtag:blogger.com,1999:blog-5822805028291837738.post-6377144235783610872019-08-19T08:26:50.578-04:002019-08-19T08:26:50.578-04:00I really like your take on the issue. I now have a...I really like your take on the issue. I now have a clear idea on what this matter is all about.. <a href="https://couponmonkey.in/compare/product/epson-l3150-wireless-printer" rel="nofollow">epson l3150 wireless printer full specs</a>brittanymlemayhttps://www.blogger.com/profile/05828142970980753025noreply@blogger.comtag:blogger.com,1999:blog-5822805028291837738.post-24192171576690520702019-07-02T01:18:11.674-04:002019-07-02T01:18:11.674-04:00Nice postNice postufo 3dhttps://ufo3d.com/noreply@blogger.comtag:blogger.com,1999:blog-5822805028291837738.post-28371147559502451702019-03-30T07:04:54.322-04:002019-03-30T07:04:54.322-04:00Here's a video on how it's used: https://...Here's a video on how it's used: <a href="https://youtu.be/Ub4z0wBDRGo" rel="nofollow">https://youtu.be/Ub4z0wBDRGo</a>Joshua Stultshttps://www.blogger.com/profile/03506970399027046387noreply@blogger.comtag:blogger.com,1999:blog-5822805028291837738.post-10802247748163268422019-03-30T07:02:47.864-04:002019-03-30T07:02:47.864-04:00Here's the Glyph script the Pointwise folks us...Here's the Glyph script the Pointwise folks used to do automated meshing starting from geometries in ESP: https://github.com/pointwise/GeomToMesh<br /><br />It relies on the geometry attribution to define things like viscous spacing, etc. that you need to get high-quality meshes. Joshua Stultshttps://www.blogger.com/profile/03506970399027046387noreply@blogger.comtag:blogger.com,1999:blog-5822805028291837738.post-61636269501141827372019-02-28T06:45:40.593-05:002019-02-28T06:45:40.593-05:00Interesting cloud results from running increased r...Interesting cloud results from running <a href="https://www.quantamagazine.org/cloud-loss-could-add-8-degrees-to-global-warming-20190225/" rel="nofollow">increased resolution sub-problems</a>. Joshua Stultshttps://www.blogger.com/profile/03506970399027046387noreply@blogger.comtag:blogger.com,1999:blog-5822805028291837738.post-83038727339763426092019-02-01T06:57:25.499-05:002019-02-01T06:57:25.499-05:00What is a hydraulic jump? (video)<a href="https://youtu.be/7tjf8HWiR3Y" rel="nofollow">What is a hydraulic jump?</a> (video) Joshua Stultshttps://www.blogger.com/profile/03506970399027046387noreply@blogger.comtag:blogger.com,1999:blog-5822805028291837738.post-77264430480466410282019-01-12T11:11:57.581-05:002019-01-12T11:11:57.581-05:00The 3D printed locomotive gear from GE in this art...The 3D printed locomotive gear from GE in this article has some similar looking features to my topology optimized gears from this little study: https://www.machinedesign.com/3d-printing/what-will-3d-printing-look-2019-part-1Joshua Stultshttps://www.blogger.com/profile/03506970399027046387noreply@blogger.comtag:blogger.com,1999:blog-5822805028291837738.post-14409878494132106422019-01-05T13:44:05.001-05:002019-01-05T13:44:05.001-05:00Another limitation that I did not note above is th...Another limitation that I did not note above is the ability to specify solid or void areas in the topology optimization. I don't see that capability covered in any of the OpenLSTO docs. ToPy is able to do this. Joshua Stultshttps://www.blogger.com/profile/03506970399027046387noreply@blogger.comtag:blogger.com,1999:blog-5822805028291837738.post-87741835290142608192019-01-04T12:44:05.506-05:002019-01-04T12:44:05.506-05:00I added OpenLSTO to my list of opensource Aeronaut...I added OpenLSTO to my <a href="https://www.variousconsequences.com/p/open-source-aeronautical-engineering.html" rel="nofollow">list of opensource Aeronautical Engineering Tools</a>. Joshua Stultshttps://www.blogger.com/profile/03506970399027046387noreply@blogger.comtag:blogger.com,1999:blog-5822805028291837738.post-35332625879141753822018-08-12T08:40:25.225-04:002018-08-12T08:40:25.225-04:00Sorry Michael, I haven't used google compute e...Sorry Michael, I haven't used google compute engine for CFD in a long while. I would be very interested to hear how you use it though! Joshua Stultshttps://www.blogger.com/profile/03506970399027046387noreply@blogger.comtag:blogger.com,1999:blog-5822805028291837738.post-92014994517281246792018-07-24T12:26:48.425-04:002018-07-24T12:26:48.425-04:00Hello Sir! I was wondering if you would be interes...Hello Sir! I was wondering if you would be interested in updating these instructions (or passing to me directly) as I am interested in running FOAM on GCP. Thank you in advance!MichaelCFDhttps://www.blogger.com/profile/05218723357660978321noreply@blogger.comtag:blogger.com,1999:blog-5822805028291837738.post-63413933235765936542017-12-02T16:32:40.828-05:002017-12-02T16:32:40.828-05:00Fork of ToPy with 2D image output changed to use P...Fork of ToPy with 2D image output changed to use PIL instead of matplotlib: https://github.com/jstults/topy.gitJoshua Stultshttps://www.blogger.com/profile/03506970399027046387noreply@blogger.comtag:blogger.com,1999:blog-5822805028291837738.post-25773230920774915462017-11-27T06:22:15.304-05:002017-11-27T06:22:15.304-05:00this list lives on this page now: Open Source Aero...this list lives on this page now: <a href="http://www.variousconsequences.com/p/open-source-aeronautical-engineering.html" rel="nofollow">Open Source Aeronautical Engineering Tools</a>Joshua Stultshttps://www.blogger.com/profile/03506970399027046387noreply@blogger.comtag:blogger.com,1999:blog-5822805028291837738.post-42219463269268581862017-11-26T18:08:18.623-05:002017-11-26T18:08:18.623-05:00Are Disagreements Honest? "A robust result i...<a href="http://mason.gmu.edu/~rhanson/deceive.pdf" rel="nofollow">Are Disagreements Honest</a>? "A robust result is that honest <br />truth-seeking agents with common priors should not knowingly disagree." Of course, the hard part is the priors...<br /><br />by way of this post: <a href="http://www.overcomingbias.com/2017/11/why-be-contrarian.html" rel="nofollow">Why Be Contrarian</a>? Joshua Stultshttps://www.blogger.com/profile/03506970399027046387noreply@blogger.comtag:blogger.com,1999:blog-5822805028291837738.post-74313532534440538672017-11-21T07:01:05.104-05:002017-11-21T07:01:05.104-05:00This article reviews applications of deep neural n...<a href="https://www.cambridge.org/core/journals/journal-of-fluid-mechanics/article/deep-learning-in-fluid-dynamics/F2EDDAB89563DE5157FC4B8342AD9C70/core-reader#" rel="nofollow">This article</a> reviews applications of deep neural networks to computational fluid dynamics (specifically <a href="https://www.osti.gov/pages/servlets/purl/1333570" rel="nofollow">Reynolds Averaged Turbulence Modeling Using Deep Neural Networks with Embedded Invariance</a>), and argues for "challenge data sets" (something akin to ImageNet) for turbulence modeling. Joshua Stultshttps://www.blogger.com/profile/03506970399027046387noreply@blogger.comtag:blogger.com,1999:blog-5822805028291837738.post-84853551653450429142017-11-14T06:00:12.627-05:002017-11-14T06:00:12.627-05:00Here's an approach to speeding up a lattice-Bo...Here's an approach to speeding up a lattice-Boltzmann solver: <a href="http://www.variousconsequences.com/2017/11/deep-learning-to-accelerate-computational-fluid-dynamics.html" rel="nofollow">Deep Learning to Accelerate Computational Fluid Dynamics</a> Joshua Stultshttps://www.blogger.com/profile/03506970399027046387noreply@blogger.comtag:blogger.com,1999:blog-5822805028291837738.post-552648649134589252017-11-10T07:38:32.357-05:002017-11-10T07:38:32.357-05:00Machine learning for supper fast simulations has a...<a href="https://www.reddit.com/r/CFD/comments/5n91uz/cfd_machine_learning_for_super_fast_simulations/" rel="nofollow">Machine learning for supper fast simulations</a> has an interesting comment: "...While I find this an interesting approach, it seems to me to be really confusing to talk about 'acceleration' and 'speed-up' in the way you are, because you're doing a COMPLETELY different thing from what a standard solver is doing. "<br /><br />That's why it's surprising! <a href="http://www.shipulski.com/2017/11/08/the-power-of-surprise/" rel="nofollow">Surprise is powerful</a>... Joshua Stultshttps://www.blogger.com/profile/03506970399027046387noreply@blogger.comtag:blogger.com,1999:blog-5822805028291837738.post-40794640186232155102017-02-12T11:04:58.965-05:002017-02-12T11:04:58.965-05:00Somewhat related: Why We Mix Fact & Value Tal...Somewhat related: <a href="http://www.overcomingbias.com/2017/02/we-we-mix-fact-value-talk.html" rel="nofollow">Why We Mix Fact & Value Talk</a>Joshua Stultshttps://www.blogger.com/profile/03506970399027046387noreply@blogger.comtag:blogger.com,1999:blog-5822805028291837738.post-85754331432921768342017-02-12T10:35:43.091-05:002017-02-12T10:35:43.091-05:00ToPy is on github nowToPy is <a href="https://github.com/williamhunter/topy" rel="nofollow">on github</a> now Joshua Stultshttps://www.blogger.com/profile/03506970399027046387noreply@blogger.comtag:blogger.com,1999:blog-5822805028291837738.post-33818979864686134112016-12-18T09:41:36.260-05:002016-12-18T09:41:36.260-05:00Here's an example Parareal implementation in p...Here's an example Parareal implementation in python for 3D Burger's equation on <a href="https://github.com/Parallel-in-Time/PararealF90" rel="nofollow">github</a>; also <a href="https://arxiv.org/abs/1509.06935" rel="nofollow">the paper</a> to go with the code. <br />Joshua Stultshttps://www.blogger.com/profile/03506970399027046387noreply@blogger.comtag:blogger.com,1999:blog-5822805028291837738.post-83893380478378921122016-01-09T08:05:58.740-05:002016-01-09T08:05:58.740-05:00Thanks for your comments on this post. Definitely...Thanks for your comments on this post. Definitely provoked some more thought on my part. <br /><br />The similarity with converging Markov Chains, and sensitivity to initial conditions is a pretty good analogy. It's not perfect though. The reason you get different answers from two Markov Chains you started with different initializations is that you haven't run them long enough. So the difference is down to error. <br /><br />Jaynes' point is subtly different: <i>disagreement can legitimately exist without any error by either party</i>. Joshua Stultshttps://www.blogger.com/profile/03506970399027046387noreply@blogger.comtag:blogger.com,1999:blog-5822805028291837738.post-29115152334250614522015-11-26T09:21:58.068-05:002015-11-26T09:21:58.068-05:00Thanks for commenting. I agree: where you start ...Thanks for commenting. I agree: where you start matters in a couple of ways. The priors for the claim itself matter, and those are likely to be correlated with priors that effect how you evaluate incoming evidence. The evidence is hardly ever just "the evidence". It's usually another claim, and the who/what/where/how/why of the claim matter. Joshua Stultshttps://www.blogger.com/profile/03506970399027046387noreply@blogger.comtag:blogger.com,1999:blog-5822805028291837738.post-57539375067300114762015-10-23T15:14:49.194-04:002015-10-23T15:14:49.194-04:00Seems like a markov chain with differing starting ...Seems like a markov chain with differing starting points.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-5822805028291837738.post-70068781606802588352015-10-23T02:27:06.474-04:002015-10-23T02:27:06.474-04:00Ah, just reread my comment. I meant the probabilit...Ah, just reread my comment. I meant the probabilities of "given the claim is true, my opponent would have claimed it to be true " vs. "given the claim is false, my opponent would still have claimed it to be true". Of these two, the first one should have higher probability, which should shift my belief the appropriate (possibly infinitesimal) amount towards agreement.Anonymousnoreply@blogger.com