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If you know the authors of your specific area of research, arXiv is a nice way to read their new papers when they are (mostly) done but the submission to a journal is not finished yet.
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This. In my experience, you have to replace peer review with reputation for preprints. That's highly imperfect, and it tends to lead to dismissing of good but work by less well-known researchers as "not peer reviewed", while well-known researchers (or researchers at well-known institutions) basically get a fast track to citations.

Despite the imperfections, I found arXiv indispensable for my research. In particular, mathematics has a slow peer review cycle (it's hard to read and understand, and many referees require that they fully understand a paper to accept it, which imo is a little flawed, but that's the culture). I had several papers that were under review for more than a year (single journal, only one round of revisions), and arXiv was my only showcase. Both works ended up very highly cited, but publication delays would have been an even bigger problem if arXiv wasn't there.

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they also keep the papers as a pre-edited, free version of the peer reviewed equivalent
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This reminded me of the fact that one colleague of mine even updates the arXiv version if any errors are spotted and says himself that this makes the arXiv version better than the journal version.
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Do people browse arxiv or monitor new posts like reddit or something? I only visit when I encounter a link to it or when I search for a specific paper.
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It depends on the kind of people. Most normal people don't do that, it's not a reddit-like platform after all.

But most researchers and grad students (like me) often subscribe to daily mailing list of the papers dropping that day from their particular field. Having a cursory read at the paper titles and then opening the papers further relevant to you is a morning ritual for many.

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Was for me as a physics grad student in 1995!
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https://www.alphaxiv.org/ is a nice place to browse, search for, and read ArXiv papers which have optional AI summaries and chat. If you like one paper, you can get a list of similar papers.

To view a specific paper, just take original link and change "arxiv" --> "alphaxiv". For example: https://www.alphaxiv.org/abs/1706.03762

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I suggest Scholar Inbox.

https://www.scholar-inbox.com/landing

It is a recommendation system for new papers that come out each day. If you train it a bit by specifying what you like and don't like you'll get a pretty reliable feed.

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I use the RSS feeds to watch for papers mentioning terms I'm curious about, do a casual skim for anything interesting and maybe end up finding a paper per month or two that are useful to read more carefully. Lots of chaff for sure, but if you have some core interests it's quite useful.
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I built a bluesky bot if someone is interested in having a live feed of the articles.

You can find it here: https://bsky.app/profile/arxiv-daily-bot.bsky.social

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Yes, people do that. Karpathy made a utility to monitor it better years ago: https://github.com/karpathy/arxiv-sanity-preserver
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A bit too big and varied to browse, but you can get emails of all recent papers in your field(s) of interest with something like Scholars: https://app.scholars.io/newsletter I subscribe to "Functional Analysis" and get a weekly email listing 30-40 papers.
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Not all the time, but I certainly do to keep up with latest results. Usually, these days I go through SciRate, where the quantum computing community is very active in voting up good paper [1].

[1] https://scirate.com/arxiv/quant-ph

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Yeah, it is not too uncommon that people visit the new listings (or subscribe to the email version) to (try to) keep track of what is going on in your field.

Supposing of course your field roughly matches one of the categories.

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I did when I was in academia. Would open each day and check what new papers were in my field. It was fun, and I learned a ton.

I kept it up out of habit for a year after grad school. Then moved on.

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I get google scholar alerts according to authors.
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I’m RSS-subscribed to a few sections relevant to my research.
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RSSFeed yes
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Have you personally reviewed for big conferences or submitted and received reviews? It's a very noisy process that does toss out the lowest effort clueless stuff, but doesn't discriminate all that well between "meh" and "interesting", junior reviewers (the bulk) want proof of blood, sweat and tears. They want novel model modules and algo tweaks and complain about novelty that it's just A plus B, missing the point... They surely don't catch wrong results or incorrect claims because the catastrophic problems that invalidate papers are often in the implementation, not the nice math equations that motivate it.

In other words, Arxiv is what you use when you want to inform yourself on new research, conferences are for furthering your career by getting closer to your PhD graduation, expand your CV etc. And then to network and mingle with researchers in person and try to get hired.

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One growing role, especially in mathematics, is that of a host for "overlay journals": https://www.insmi.cnrs.fr/en/cnrsinfo/epijournaux-en-mathema...

I really like the idea. In short: arXiv, HAL and similar sites host the papers without any peer review (short of perhaps stopping crank spam) or access control. They're freely available to anyone. Authors then submit arXiv IDs (or similar) to the reviewers of "overlay journals", which then review and accept or not. The overlay journal accepts a paper by just adding it to its list of accepted arXiv identifiers, and that's that.

This ensures accessibility for all, keeps peer review, yet takes a lot of the practical hurdles away from actually running a journal. A journal can now just be a group of people who give thumbs up or down to arXiv identifiers, and if that group's conclusion start having weight in the community then it's become an important journal. Maybe they give away their listings for free, maybe they charge to read the reviews – it's really up to them what the business model (if any) will be.

It's really nice.

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I’ve been arguing for this for a long time, glad to see this sort of thing start.

Papers “being in” a journal hasn’t made sense for a long time, but curation is valuable as is staking reputation on something.

People I was with called some of this “badges”, there is no reason why a paper cannot be reviewed by a set of people who say “this is new and innovative stuff in the field and highly important if true, but we’re not making claims about the stats” and a different set able to say “the stats here is spot on but we don’t know how relevant it is in biology” and another to say “we can rerun the code and get the same analysis results out, but we don’t know if the analysis is doing anything useful”. Right now we have journals making some combination of claims, and authors have to pick a single journal.

Once you view journals as a list of papers, the exclusivity seems weird. Once you see that journals are then a set of identifiers added to a paper, or rather statements about a paper, there’s lots of interesting ways you can imagine more useful things than current publishing.

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I think the DOI system provides a stable identifier for a paper that is not specific to arXiv?
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It’s a useful tool. But its “value” is about the same as a github repo with your pdf.

It doesn’t need much funding or staff and not quite sure why they’re going through all this rigmarole and independence. I almost think they’d be better off like Apache where there ade very few employees.

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Well, some blog posts are worth citing.
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Of course some blog posts are worth citing. Then cite them as blog posts.

My point is that a LaTeX PDF can launder epistemic status. An unreviewed argument starts to look like established research merely because it adopts the visual grammar of a paper.

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The classic paper format is just ergonomically what many of us are good at handling effectively as readers. For example in ML typically they all have an abstract, a teaser figure with a caption, Fig. 2 with a method overview/architecture (boxes and arrows). An intro starting with the motivation and the problem with prior work, their key idea, their experimental evidence, then a dense restatement of the contributions as bullet points. Then related work overview, then the method description in detail, then the experiments, dataset descriptions, protocols, metrics, then the results and their interpretations, then the conclusion, i.e. what they conclude from the results.

Its fairly rigid and newcomers often complain that it's too repetitive but if you read such papers for years, you learn to very quickly navigate such a paper that adheres to these conventions and you quickly see if it's something you care about right now or not. Blog posts don't have the same formal structure and it makes the quick skimming and assessment much harder.

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> Then cite them as blog posts

My point is it's still useful to have a somewhat authoritative place to cite (high quality) blog post level content. arXiv has formatting requirements and doesn't go down like random personal sites.

> a LaTeX PDF can launder epistemic status

True to a certain extent, although something people are aware of and they can judge the content themselves (hopefully).

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> although something people are aware of and they can judge the content themselves

Based on how arXiv papers get boosted around on social media, I don't believe this to be the case.

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If you judge things based on their formatting, that's on you
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At least in economics it can easily be 1-5 years until you go from draft to journal. In the meantime, you want a way for others to easily cite your paper, to make different revisions available, for you to post it in a way that's stable (people's websites change all the time, etc.)

Also, because most folks don't want to deal with paywalls, it's standard practice to put the last version of your draft before conditional acceptance on an online repository. It used to be SSRN for econ/finance, but they sold out to Elsevier, so now arxiv is increasingly being used.

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The bibliography is more important, imo, than the peer review. I get the most use of arxiv surfing references and citations.
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"peer review is vital"

I suggest knowing some people who have written works for peer review and done peer review themselves.

Some people outside academia give peer review quite the undeserved aura.

There's a lot of trash on ArXiv, how much of it is in your diet should depend on your ability to evaluate the quality of research.

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Unless you are in research I would not bother; you are trying to drink from a firehose. Let other people do the curating for you.
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arXiv enables peer review!

arXiv users are the peers doing the review.

"Peer review" has existed for centuries before journals created their own bad for-profit version.

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Actually arXiv is frustrating from an open access angel. It is very much possible to put up documents without open licensing so the content is not always fulfilling the open access definition.
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Peer review WAS vital for a long time. Maybe the world looks different now, maybe LLMs can find value in things better than humans. When you make an assumption it's good to think about why you do so, in this case it seems to be for historical reasons.
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likewise, taking a wrecking ball to systems refined over centuries should come with some burden of proof for the positive claim that a tool can replace an institution. most times this has happened before, we've had to strengthen credentialing requirements to stop people from dying
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The burden of proof is on peer review not the other way around. Peer review is a fairly modern invention post WWII. Prior to that “peer review” looked very different.
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i'm saying all positive claims need to be justified, not that priors are exempt. there is one claim with a vast body of evidence supporting it, and a competing claim that must meet the same standard. the world is not so magically different now that we can't look at software engineering and computer science the same way we look at real (credentialist, regulated) science and engineering disciplines. really all i was implying is "peer review WAS vital" is jumping the gun
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