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File 160920299389.jpg - (701.88KB , 850x1227 , sample_4a7f5ce8997dd5ef6dd2638cfe8b8336.jpg )
2137 No. 2137 hide watch expand quickreply [Reply] [Edit]
Thread for general discussion of p2p networks and protocols.

Here's some uncharted territory: there's apparently some Japanese p2p projects. 新月 (掲示板) is a BBS, Perfect Dark and Share are file sharing services. Perfect dark also has a message board system. Does anybody use these? Are there others?
https://shingetsu.info/
https://w.atwiki.jp/botubotubotubotu/pages/28.html
16 posts and 6 images omitted. Click Reply to view.
>> No. 2186 [Edit]
>>2184
Legal questions are fairly local, you can't give a real answer without having at least a specific country, even a specific state, in mind.
Very generally though, there needs to be intent to commit a crime. And since there's legal eepsites (most of them, even) the more act of using i2p cannot be intent.
And to even get there, they'd have to know what content you're routing in the first place, but that's heavily encrypted.
>>2185
I2P does not itself contain data storage. There's Lahoe if you want that, but I'm not sure it even works anymore.
>> No. 2187 [Edit]
>>2186
By distributed data storage I meant stuff like torrents.

Zeronet, perfect dark and the work in progress safenet(maidsafe) are entirely reliant on distributed storage.

Post edited on 15th Jan 2021, 1:48pm
>> No. 2188 [Edit]
>>2184
I remember hearing stories about people who ran a Tor exit node and were contacted by the three letter agencies a few times for suspicious activity, but upon seeing that they were only running an exit node they were off the hook. I don't know how true those stories are, and running entirely within i2p is probably safer than running exit nodes. I think the risk is fairly trivial though since I haven't seen any stories of people arrested for using Tor for legitimate purposes, and i2p is even more obscure.
>> No. 2189 [Edit]
>>2188
>Tor exit node
That's why you should run hidden services and avoid using Tor to browse other websites. However, there's a guide about that on the Tor project website.
https://community.torproject.org/relay/community-resources/tor-exit-guidelines/

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2173 No. 2173 hide watch quickreply [Reply] [Edit]
What are your thoughts on alternative web protocols like Gopher and Gemini?
We're living in the dark ages where modern webshites are obsfucated behind multiple scripts and horrible web designing.
>> No. 2174 [Edit]
My thought is that they have low adoption rates, which means standards that advance at the pace of a dead snail. People fill their sites with slow, pointless/malicious scripts and bad design because they can. People can also choose not to do those things. "Quality" via stringent restriction is unecessary and misguided.
>> No. 2175 [Edit]
I've tried gopher before, and it really does all it needs to (there's even an imageboard available, 1436chan, gopher://khzae.net/1/chan).
I like how it forces everything to be usable be text-only browsers, text being the universal interface.
Making a gopherhole is also fun because it's so easy. It is what the web should be.
If Gemini is pretty much that but in encrypted, then I'd probably be on board as well, but I haven't tried it yet.
>> No. 2183 [Edit]
>>2173
I really like Gemini. I believe Gemini has some kind of scalability issue however so it could never become a replacement for HTTP. Nonetheless, I intend to use it myself at some point. I do like the idea of forcibly keeping things simple.

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2130 No. 2130 hide watch expand quickreply [Reply] [Edit]
Does anyone here have experience with ham radio (perhaps even getting a license)? I recently stumbled across http://www.websdr.org/ and it's been kind of fun playing around with it, tuning into random parts of the spectrum and catching people's conversations (it's also mind-blowing that we now not only have enough computing power to do the demodulation and signal-processing that used to be done with dedicated circuits directly in software, but that we can do so in real-time inside a browser). Seems like ham radio is a dying hobby these days, and the only people left doing it are the older generations, but the sort of insular culture is also kind of neat – almost like an imageboard community.

Most of the topics I saw being discussed were people talking about their setups, but aside from the communications aspect there's got to be some other cool stuff you can do with broadcast/receive permission for all that spectrum.

Post edited on 23rd Dec 2020, 7:03pm
3 posts omitted. Click Reply to view.
>> No. 2134 [Edit]
>>2132
Yes it should be kept around as well.
>>2133
Yes, but that looks very difficult. They say the questions and answers are pretty easy, but I always found it to be very complicated.
>> No. 2135 [Edit]
>>2134
I think the questions are actually drawn from a fixed pool which they publish ahead of time, so worst case you can just brute-force memorize them, although from a pedagogical standpoint that's not very useful for fundamental understanding.

I also realized I never actually looked through the question set before: I just did, and the questions seem to be divided into five rough sections
* Trivia - FCC Rules, descriptions; Operating Procedures
* EE knowledge – Radio wave characteristics; Electrical principles; Electrical components
* Basic Antenna Theory
* Physical(?) knowledge – Station equipment; Electrical safety
* Signals Knowledge – Modulation modes

The trivia is stuff you've just got to memorize since they're just arbitrary conventions. The physical knowledge is stuff you can probably study last since it's basically an application of the theory things; for instance, if you learn the basic circuit theory you'll be able to get most of the electrical safety ones correct. The difficulty of the other four probably depends on whether you've already been exposed to those topics.
>> No. 2145 [Edit]
>>2130
My primary interest in Ham Radio would be due to Broadband-Hamnet. I think it would be cool to host an imageboard using radio in a post-apocalyptic world. Outside of that though, I don't see the point of Ham Radio. To me, it's inferior to forums because the two of you have to actually be available at the same time in order for communication to be successful and due to time-pressure, you can't structure what you want to say as well as you could in a forum.
I understand the technology had a former glory and I do support archiving and preservation of history but it's still generally irrelevant to me as I have little interest in using something purely because it's an older way of doing things.
Ultimately, if you just want to talk to random people around the world, why not just go on Omegle? I don't know if people still use Omegle like they did in the late noughties or early 2010s but nonetheless, I don't think there's anything wrong with it.
From what I've read on the Ham Radio subreddit, it seems Broadband-Hamnet or some technology like it is what's really rejuvenating the Ham Radio scene.
Anyway, for the time being, as I haven't got the funds, I'll ignore it for now but I have to say, I'm greatly looking forward to where things could end up going.
>> No. 2148 [Edit]
>>2145
In the US doesn't all communication over ham radio have to be done in cleartext (i.e. you can't encrypt things)? How does that gel with broadband-hamnet? It means that you can't do any sort of encryption and that means you can't use almost any of the modern application protocols.

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2100 No. 2100 hide watch expand quickreply [Reply] [Edit]
I found a scary, but interesting toy.
Java Graphical Authorship Attribution Program
https://github.com/evllabs/JGAAP
2 posts and 1 image omitted. Click Reply to view.
>> No. 2103 [Edit]
>>2102
>deanonymize users
Stay safe.
Keep posts short.
>> No. 2104 [Edit]
>>2103
Ironically, unless everyone does it you'll stick out the most. What would be neat is a technique that makes use of a GAN-sort of thing that will "normalize" any input you give it, making it impossible to distinguish different users. Maybe this already exists in the literature somewhere, but given that things like word-vectors and GPT already perform some sort of dimensionality reduction, there's probably a way to go from "input sentence" -> "sparse representation" -> "normalized input."

Unfortunately there's an inherent limitation/asymmetry in that no amount of normalization can remove distinguishing features based on content. For instance, if poster A talks about a specific technology a lot, and you come across someone mentioning that same technology on another board, there's a very high chance that you've run into poster A. And there's no way to normalize that since the content being talked about is inherently identifying.
>> No. 2105 [Edit]
>>2104
Some Drexel students tried making something that could "anonymize" text input, but it doesn't use machine learning.
https://github.com/psal/anonymouth
>> No. 2106 [Edit]
>>2105
Hm it doesn't seem like it automatically does the anonymization yet. As of now it seems to just highlight the distinguishing features which the user can manually edit.

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2064 No. 2064 hide watch quickreply [Reply] [Edit]
... .
>> No. 2065 [Edit]
>>2064
Care to elaborate? Because the first paragraph of your image is utter nonsense.
>> No. 2066 [Edit]
>>2065
(for some reason can't edit, so apologies for double post).
Besides the conclusions that don't follow from the previous statements, you also have patently false statements such as "time is space" (while they're linked, sure, they're not interchangeable as clearly seen from the fact that the minkowski metric has a different sign for the time dimension than it does for space).
This seems more like the work of a crank than something substantive.
>> No. 2067 [Edit]
>>2066
It helps to enter a password manually, the ones given tend to change on their own.
>> No. 2068 [Edit]
>>2067
I think it's because I have cookies set to expire pretty aggressively, which invalidates the default generated password. I should probably write a userscript or something to automatically set the "postpassword" cookie to a fixed secret value.

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1813 No. 1813 hide watch expand quickreply [Reply] [Edit]
How do I get this?!?! I wanna have Miku sitting on my desktop like that!
My OS is linux ubuntu, by the way. I've been searching all over the internet but I can't find a way to install this!
7 posts omitted. Click Reply to view.
>> No. 1870 [Edit]
File 156449793753.png - (16.56KB , 514x423 , macopix.png )
1870
>>1822
it looks great but it segfaults when I try to open the settings menu on my machine and it's pretty much impossible to configure without it
>> No. 1871 [Edit]
>>1870
Hm you might try compiling from source and see if that fixes it. Alternatively if there is indeed a bug you could try compiling with debug symbols if needed and stepping through with gdb (or just looking at the symbol dump) and seeing what's causing it to segfault.

Another option might just be to find where the preferences are stored (probably some dotfile in the home directory or near the binary path) and modifying that directly.
>> No. 1872 [Edit]
>>1871
Actually I didn't check before posting because I thought the software died years ago but it got updated in June, my repos is lagging two versions behind. I compiled the new one the menu works fine now. According to dmesg it was a GTK problem.

Thanks anyways.
>> No. 2062 [Edit]
>>1817
I had some linker errors trying to get this to build on Linux. Seems like some GCC defaults changed since this was working to disallow for some undefined behavior, which MaCoPiX needs to be patched for. In the meantime, it can be worked around using `make LDFLAGS=-Wl,--allow-multiple-definition` for the make step.

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2061 No. 2061 hide watch quickreply [Reply] [Edit]
https://www.newscientist.com/article/2252583-secret-to-tardigrades-toughness-revealed-by-supercomputer-simulation/

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2047 No. 2047 hide watch quickreply [Reply] [Edit]
If you have to endure Microsoft shoving their whole fist up where the sun don't shine because your new-ish hardware either doesn't support Windows 7 or you're tired of worrying about operating systems and decided to just bite the bullet, here are a few things you ought to consider:

In the beginning, there was no reliable way to stop Microsoft's spying unless you somehow got your hands on a clean ISO for the LTSB/LTSC edition of Windows 10. Now there is, through a third party open source firewall called Simplewall. By default it comes with a list of IP addresses to block that Windows normally sends telemetry, keystrokes and other data to. Simply enable them in the blocklist.
Link: https://github.com/henrypp/simplewall

Another project which aims to mitigate data collection as well as to debloat the system is a PowerShell script called Windows10Debloater which disables bloatware applications that have their own data collection, such as Cortana, the Microsoft Store and Edge. (Link: https://github.com/Sycnex/Windows10Debloater).

After running these I managed to get zero networking utilization when I don't run any internet-connected tasks myself, something which was near impossible when running Windows 10 without these things. Keep in mind though that you will probably have to re-run the PS1 script after every major update since those tend to re-enable some if not all of the built-in crapware.

You can also defer Windows updates by setting Windows Update Service from Manual to Disabled in services.msc. To ensure that the Windows Update Service doesn't start without your permission since it can actually do that (believe it or not) you can open up gpedit.msc, then go to Computer Configuration > Administrative Templates > Windows Components > Windows Update > Configure Automatic Updates, and select Disable. This way, Windows will only update when you tell it to.

Yeah this is a lot of hoops to jump through but I think it's worth it to try to stop Windows 10 from just doing what it wants.
>> No. 2048 [Edit]
This is the most comprehensive guide I could find on manually removing things like cortana and other unwanted components without a script.
https://fdossena.com/?p=w10debotnet/index.frag

Post edited on 17th Jul 2020, 7:30am
>> No. 2049 [Edit]
I've been using LTSC. It's far from perfect, but it works.
>> No. 2050 [Edit]
>>2048
Hey that's pretty good!
>> No. 2136 [Edit]
I'll be updating to Windows 10 soon so thanks OP.

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1767 No. 1767 hide watch expand quickreply [Reply] [Edit]
Greetings.

I recently noticed that one could express a polynomial in terms of combinatorials and so I am curious as to how far one could go with this.

My requests are:
1) An expression of n^4 purely in terms of combinatorials
2) A method for finding these combinatorial-expressions
3) Clarity regarding what the term is for this field of study my question would fit into (if there is one)

I notice Pascal's triangle appears consistently (albeit with the rightmost '1' cut off) so perhaps, keeping the positive-negative alteration in mind, the n^4 combinatorial-expression is actually quite predictable but I have yet to test this and to be honest, I'd rather find a method than apply what I predict could be the cheat-sheet.
21 posts and 6 images omitted. Click Reply to view.
>> No. 2041 [Edit]
File 159374777716.jpg - (146.34KB , 1280x720 , gj_club.jpg )
2041
Japanese university math is pretty advanced (relative to the equivalent in US).

Post edited on 2nd Jul 2020, 8:44pm
>> No. 2042 [Edit]
>>2041
This just looks like sequences and (finite) series, though.
>> No. 2045 [Edit]
OP, you did well in asking if there was such a subject beforehand. Lately I was asking myself if there was something on sequences that are like arithmetical progressions, but with a different ratio between every number. I research deep in every possible related topic and couldn't find anything, even describing the problem didn't help. I ended up finding some formulas of my own, in the end, and was even going to post them here and ask about, but eventually I found they actually exist and are called quadratic sequences. There isn't a lot about them, though. The existing formulas are very different from the ones I made, and it appears that there are (as I suspected) even higher orders of magnitude, like cubic etc. What do you guys think of this whole thing?
>> No. 2046 [Edit]
>>2045
I think you can just generalize everything by writing it as a recurrence relation. For a quadratic relation we know that we must have

d(n) = f(n+1) - f(n) = an + b, which implies that f(n+1) = f(n) + an + b.

Now for the particular case of quadratic sequences I think finding a general formula for the nth term is relatively straightforward because we know how to do sums of arithemtic sequences, so you can apply this to find d(1) + d(2) + ... + d(n) which immediately gives you a formula for what f(n+1) is. Same thing applies for "cubic sequences" as well and so on since we have nice closed form solutions for those.

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2036 No. 2036 hide watch quickreply [Reply] [Edit]
Why aren't dual screen laptops a thing?
>> No. 2037 [Edit]
It seems pointless and liable to break to me, just use a desktop or if you really need two screens on the move, use a tablet as the second screen. Having said all of this, I'm not a fan of two monitors in the first place and don't have two.
>> No. 2038 [Edit]
Hard to implement cleanly, since you'd probably have to double the thickness of the display part. Maybe with the new fancy paper-thin/foldable displays it's possible, but it doesn't make sense ergonomically since it'll be off-center.
>> No. 2039 [Edit]
>>2038
>it'll be off-center
I've seen home made mods that have the screen fold out on top. Which places one of the screens at eye level, making for a more comfortable view.
>> No. 2040 [Edit]
>>2039
That'd be neat! And the vertical real-estate would be very useful. Tangentially I don't know why almost all laptops are 16:9, even though 16:10 gives you that extra bit of valuable vertical space.

File 158203359614.png - (172.88KB , 1392x830 , 1581610075358.png )
1996 No. 1996 hide watch expand quickreply [Reply] [Edit]
Hello, this is not a shill post. So I decided to create my own chan in python as a hobby (using the flask library) and this is what I have come up with so far. Just give me feedbacks here in this thread or there.

Currently you can only upload jpeg , jpg , png , gif below the size of 4mb.

(IDK shit about frontend btw)

https://rikchan.pythonanywhere.com
9 posts omitted. Click Reply to view.
>> No. 2020 [Edit]
>>2019
Wouldn't a booru be better than an imageboard then?
>> No. 2021 [Edit]
>>2020
Isn't a booru technically a type of imageboard?
>> No. 2022 [Edit]
>>2021
You could say those are the real imageboards, and these places are message boards.
>> No. 2023 [Edit]
>>2020
Boorus are more of a mass collection site with little to no quality control. I'm thinking of a place where people post the cream of the crop, not just dumping images for the sake of it but sharing things that hit all the right strokes for them. Maybe a scene in an anime which spoke to them, or a single piece of erotic art that they could get off to several times. Also, I'd like people to have discussion about those images, albeit with the stipulation that EVERY post would have to contain an image. I don't want something like 4/h/ where half the thread is people shitposting or arguing without posting anything.

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