wjholden

13 ms·

61.
by wjholden 2y ago
I was always amazed that R can do: > integrate(dnorm, -Inf, +Inf) 1 with absolute error < 9.4e-05 Can we do the same in this library?
62.
by wjholden 2y ago
There is also already a Reliable Transport Protocol used in Cisco's EIGRP. https://www.cisco.com/c/en/us/support/docs/ip/enhanced-inter...
63.
by wjholden 2y ago
Blogging and writing lots of white papers has become one of my favorite techniques for this in IT. Pretty much anytime something really interesting happens, I'll spend some time carefully writing up a detailed explanation. I often find
64.
by wjholden 2y ago
I actually made the unusual decision, last year, to go IPv6-only on a small website I operate. The reason why is that AWS changed their billing policy for public IPv4 addresses. This is a tiny website that people only access on their cell p
65.
by wjholden 2y ago
The OP is comparing the estimated number of humans on this planet (≈8.2 billion) to the known number of globally-routable, public IPv4 unicast addresses (<2^32≈3.2 billion). Network Address Translation (NAT) enables the sharing of public
66.
by wjholden 2y ago
I like the term "deduplication."
67.
by wjholden 2y ago
Fun fact: in Go, an IPv4 address is internally represented as an IPv6 address, starting with ten zeroes and two 0xffs. The IPv4 address is copied in the last four bytes. https://cs.opensource.google/go/go/+/re
68.
Two-Box Problem in Julia(wjholden.com)
3 points by wjholden 2y ago|0 comments
69.
by wjholden 2y ago
I had been somewhat comfortable with the older `netsh` commands from Windows 7. The PowerShell commands are overall richer for being consistent and composable if you're already comfortable with PS, but it does require a learning invest
70.
by wjholden 2y ago
By solving the problem in more than one way! This should be very achievable in a field like discrete math. First solve the problem by hand, then model the program in something like Mathematica or OR-Tools and see if you can get the same sol
71.
by wjholden 2y ago
The "v" is pronounced as an "f" in German. So, "fore-fyur-effect." English speakers could say "forfeit effect" a few times and then change the middle syllable.
72.
by wjholden 2y ago
We sometimes use the term Houdini in my field for difficult-to-reproduce problems, but not exactly as an antonym to Vorführeffekt.
73.
by wjholden 2y ago
This is a really interesting theory and I agree with everything you said about taking care of your health. I think that your theory could be very easily tested with simple survey methods. Find grandparents, ask their age, and ask if they re
74.
by wjholden 2y ago
I agree, the theory isn't nearly as difficult as the reductions. Dennis Yurichev's "SAT/SMT by Example" ( https://smt.st/ ) is a great resource on this topic, although pretty intimidating.
75.
by wjholden 2y ago
RMarkdown really is great. I used RStudio/RMarkdown for almost all my homeworks, projects, and even papers with no code during my MS program. I now realize that it was Pandoc's Markdown mixed with LaTeX that I appreciated so much
76.
by wjholden 2y ago
I think I once read that Microsoft's Xbox team once advocated for residential IPv6 for exactly this reason, but I don't have a reference.
77.
by wjholden 2y ago
HTTPS is indeed a good thing, but I actually felt some nostalgia looking at this site. It reminds me of the independent passion projects people made in FrontPage in the late 1990s, before Wikipedia and Facebook.
78.
by wjholden 3y ago
Really appreciate you explaining this idea, I want to try this! It wasn't clear to me until I read the discussion that you meant that you'd have similarity of entire documents, not among words.
79.
by wjholden 3y ago
I agree, I had never heard of using a trie as a means of hiding strings. I'm not familiar with any programming language that provides tries in a standardized way. They're not so hard to code, so I wonder if this will become a tren
80.
by wjholden 3y ago
I hadn't thought about that, but I think you're right. In fact, any recommendations engine could be a difficult confounding factor in any study of social media. I'm thinking of how the machine might even be aware of the user&
81.
by wjholden 3y ago
I don't really see the contribution from this study. The paper looks fine: quality writing, ample research, statistics are probably fine. What I mean is I don't see any non-obvious insight here. Also, I think this study would have
82.
by wjholden 3y ago
I agree with your assessment. A duplicate MAC address could cause a problem for one device, but it shouldn't have caused a full network outage. Simply opening WireShark for a few minutes might have helped the poster identify their prob
83.
by wjholden 3y ago
The killer feature of RStudio for me is RMarkdown. I composed almost all my homeworks in grad school using RMarkdown in RStudio. You get LaTeX whenever you need it, code (I usually use it for R or Julia), and markdown for ordinary text. The
84.
by wjholden 3y ago
I have a small pet theory on animal usage of tools: perhaps animals are watching humans and have learned from our example. In the past, people believed that no animals used tools. We now have countless examples of animals using tools in cle
85.
by wjholden 3y ago
I actually did exactly this. I run a very small site for a local club from an AWS Nano instance. Minimum cost is important. When AWS announced that they would begin charging for public IPv4 addresses, I enabled IPv6 on the subnet (which was
86.
by wjholden 3y ago
A possible explanation is the service provider routes IPv4 over their old routers but routes IPv6 over their new routers.
87.
by wjholden 3y ago
What was this edge case you encountered? My code worked...after I finally read the problem closely enough.
88.
by wjholden 3y ago
I remember hearing in South Korea about some US Soldier being imprisoned over a dispute where he repeatedly photographed a young woman, explicitly against her consent. Some countries give you a right to your own image. This comes up often i
89.
by wjholden 3y ago
Your observation on neurological efficiency generalizes to all physical activities. If you practiced pull-ups every day, you would become very efficient at pull-ups and possibly double the number you can do. At the same time, it isn't
90.
by wjholden 3y ago
You've given a really clear example of confusing probabilities! Would this be an instance of Simpson's Paradox?

More ›