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Nice! But is there an app with this algorithm/strategy/design for finding good matches for casually having fun together? All the apps I know suck.
> finding good matches for casually having fun together?

Basically all dating apps are optimized for enabling casual hookups at this point.

>All the apps I know suck.

Do ALL the apps suck, or are you maybe not appealing enough for being picked for casual hookups by the users on the app?

The app has an incentive to suck unless you pay
Go recheck your calculations, you'll notice something about their incentive in the case where you pay.
No, it doesn't. Because the value of a dating app is in its size. The bigger you are and the more options you can provide users, the better the experience is for everyone - paying and nonpaying customer alike. Given that most users of any dating app will be non-paid, making them miserable causes the largest portion of your users to leave, making the app a little worse and less competitive for everyone. Those paying and those not paying.

Further, customer psychology doesn't tend to reward paying to improve a bad experience. Users are more like to pay to upgrade an already good experience.

There is a very common idea that there is some conspiracy on dating apps to prevent coupling up as some strategy to reduce subscription churn, but it really just isn't true. The market is plenty large enough. Millions of relationships end every day. Millions of people turn 18 every day and enter the (online) dating world. The cold hard truth is that almost every complaint about the online dating experience is a complaint about human behavior, not about something remediable with better product design.

Source: I used to build and run dating apps.

> Do ALL the apps suck, or are you maybe not appealing enough for being picked for casual hookups by the users on the app?

Dunno, @beeforpork sounds hawt

Think more platonic hanging out. Hiking, game night, grabbing a drink.
meetup and other related apps have always been best for finding people with related interests.

If they don't have your interests, feel free to start a new group?

Meetup got enshittified years ago already, and the changes drove away the small communities that once made up so much of the site; the only groups which prosper on it now are mainly large for-profit ventures.

In places where there is a healthy ecosystem of casual, non-rapacious meetups, that is overwhelmingly organized via Facebook, not Meetup.

Thank you, I just learned a new word.

Rapacious

ADJECTIVE

1 given to seizing for plunder or the satisfaction of greed.

2 inordinately greedy; predatory; extortionate.

a rapacious disposition.

grasping, voracious,

Synonyms:

ravenous

Antonyms: generous

3 (of animals) subsisting by the capture of living prey; predacious.

FYI, Meetup got acquired by Bending Spoons and it seems it's being de-enshittified.
>Meetup got enshittified years ago already

Citation needed. Not my experience at all. And it has the major benefit of being independent of the tech giants, who already know too much about your social graph.

Why would you need a pairwise matching algorithm for finding friends? Friends are generally not exclusive nor rivalrous
This could work for that purpose in a pinch. You do actually get other matches afterwards, you just don’t get an infinite feed of other candidates and can focus on having great time with the one you’ve got.
I wonder why LinkedIn has never implemented this algo/approach for a job matching process. The inefficiencies in the current system remain large...
> commercial apps need you to keep swiping but this app is designed to get you off the platform

...and this is why some organisations only really work correctly when operated by an entity not motivated by profit.

There aren't that many organisations in this class, but the ones that are in there tend to perform functions critical to society.

Will Tinder be blamed for the sudden decline in fertility rate? Is there any other plausible explanstion to South Korea’s sudden and dramatic drop in fertility rate to 0.8? No matter how bad the housing market is or the job market is, there has never in history been such a drop in population.
Yes, dating apps turbocharge hypergamy. It is not a secret that the top 10% of men get a huge share of the likes received.
The only new variable in the last century of humanity is birth control. All others (hypergamy, economic mobility, migration, etc.) are recurring and have not impacted birth rates significantly in the past.
Population density and infant mortality had changed a lot too in the last 100 years. Income disparities, working hours, and climate too in the last 50.
this is their third attempt at a government run dating service I think :/

it's low key kind of funny how they keep reaching for the quick fix to their collapsed birth rates.

What would you do if you were the Singaporean government?
Japan is doing it well

Crash the economy and reduce people's purchasing power

Make them poor, and the birth rate will rise (Japan birth rate is rising) =)

What things could Singapore change to fix their birth rates? Empirically, nothing that any country is trying is working.
>nothing that any country is trying is working.

Because most countries aren't actually trying anything nor can the government do much in that regard when the issues are cultural and emotional.

3 months of leave or a small welfare payment are not sufficiently compelling alternatives to a career. Pay them at the level of a career and see if that changes the numbers - I feel like at least some people would be interested in that. (Say, median national income? Spitballing here)

The countries that do try seem to fall short of actually replacing even a few years of serious career work and offer no way to go back to that career after taking care of children for a while, so you just need to do that.

Importing lots of white dudes. WMAF literally is extremely pro-natalist (massively higher WMAF babies than other pairings per-capita):

https://www.reddit.com/r/aznidentity/comments/1s184vi/cdc_da...

Unironically Mao/Nixon and Henry Kissenger almost put us into a hilarious world where we (the USA) would have "imported" ~10 million Chinese women. Mao unironically proposed this and his argument about why it would have hurt us is that they "have too many children!":

"Chairman Mao: (Laughing) Those are honest words.

Dr. Kissinger: This is our position.

Chairman Mao: Do you want our Chinese women? We can give you ten million. (Laughter, particularly among the women.)

Dr. Kissinger: The Chairman is improving his offer.

Chairman Mao: By doing so we can let them flood your country with disaster and therefore impair your interests. In our country we have too many women, and they have a way of doing things. They give birth to children and our children are too many. (Laughter)

[Page 132] Dr. Kissinger: It is such a novel proposition, we will have to study it."

- https://history.state.gov/historicaldocuments/frus1969-76v18...

Stable marriage algorithm or stable matching algorithm?

> In mathematics, economics, and computer science, the Gale–Shapley algorithm (also known as the deferred acceptance algorithm,[1] propose-and-reject algorithm,[2] or Boston Pool algorithm[1]) is an algorithm for finding a solution to the stable matching problem.

* https://en.wikipedia.org/wiki/Gale–Shapley_algorithm

* https://en.wikipedia.org/wiki/Stable_matching_problem

It is in fact known as the stable marriage algorithm. It's not known as the stable matching algorithm.
the Singaporean government is often described as having a "parental" approach. I guess this move would be on brand
It's also known as being one of the very few countries actually capable of using state capacity to overcome serious social and economic problems. Godspeed.
the kind of issues that Singapore has been fairly effective at, getting people to speak the same tongue or not spitting on the street, what you could put into a bucket of 'public discipline' measures I think is over-romanticized.

The country has been effective at it but so was Prussia or England. Singapore has increasingly complex social issues you aren't going to solve with a cane, and government organized marriage likely will go as well as government cheese

It has achieved the highest global GDP per capita is just a couple dozen of years, starting as a small bit of swamp forcibly kicked out Malaysia. I think it's unfair to say that people are over-romanticizing these sorts of accomplishments.
Starting out at the second richest city in Asia after Shanghai, you mean.

The PAP likes its "fishing village in a swamp" trope, and post-war Singapore certainly had its share of problems, but it was already a wealthy trading entrepot long before Lee Kuan Yew came along.

It's also known as being one of the very few first-world countries actually without basic freedoms, like free speech, freedom of the press, etc.
Australia doesn't have those either, despite many people assuming we do (including most people who live here).
Australia, New Zealand, and the UK are all competing with each other on who can be the most authoritarian anglo nation. "Oi, you got a loicense for that opinion M8?"
Correct - this isn't new, it's how it works there. Single new grads in the 80's & 90's were being offered government funded beach holidays on graduation where they were paired with selected dating partners.
So on the one hand it's nice to see when a cool algorithm or framework is used IRL.

On the other hand, actually applying a 'stable marriage algorithm' to people makes a bunch of assumptions which are worth interrogating:

- Do people actually know what they want even in the short term?

- Do people's preference change meaningfully over longer periods of time?

- Does your preference _upon reading people's profiles_ have any strong relationship to your preference after spending any amount of time with them?

The property that right after being matched, no one could have matched with someone whose profile they preferred more does not mean that this will create stable relationships.

The match is whoever wants to start on the journey with the user, at that moment, and the algorithm is there to give the potential couple a better starting point. I guess at any rate that’s better than leaving it to hope and chance.
Least they are using an algorithm that has the intended purpose of matching people. For profit dating apps are more interested in keeping you coming back then they are in creating successful relationships
This is an extremely common sentiment I see online - that there is some conspiracy to keep people single to reduce subscription churn. I have run two dating apps (my own apps, not working for a company), and what I found through trial and error was that no matter how many levers you pull and tweaks you make, a lot of it is simply user-behavior problems, not a tech or product design problem. There is no reliable way for a dating app to only serve users non-committal matches for example. The reason someone's matches aren't committal is because they don't want to commit.

The thought experiment I usually pose is to ask what you think a free, open source, and community supported dating app would change. The answer is "not much".

I am interested in creating my own dating app/website, but the problem I foresee is getting users - a Catch 22 problem.

I would like to create a service that opperated like OkCupid used to before they sold out. Visible compatibility percentages and being able to search profiles. No curation/algorithms or swiping.

I'm interested in helping people, not taking their money.

Getting users to dating apps is probably easier than you think. Because men will go to where the women are so you only need to work on attracting female sign ups. It's actually that simple. The best way to launch is with a waitlist of warm users in 1 large city. I've seen a lot of people pining for the 2010-era OkCupid so you probably would have plenty of people willing to give it a try.
> There is no reliable way for a dating app to only serve users non-committal matches for example

While that certainly sounds difficult, it sounds feasible for e.g. Facebook.

> The thought experiment I usually pose is to ask what you think a free, open source, and community supported dating app would change. The answer is "not much".

That sounds more like a framing problem. If the ultimate goal is promoting long-lasting new romantic relationships, and it's developed without any profit motive, I'd imagine a general social network that primarily organizes in-person social gatherings.

Facebook has a dating app and it's completely free. There are no subscriptions or paywalled features. It works about as good as all the other ones.
My take is that it isn't about serving non-committal matches and withholding promising matches or whatever, it has more to do with whether you feel like there are better matches on the app if you just keep lookin or waiting. I can see how and app using the stable matching algorithm could really make you feel like you're getting the best match you're going to get, which I think could have a real impact on commitment.
Note that it's possible for dating problems to be user behavior problems in a way that is suits the profit motive of dating sites, without any conscious intent from anyone in the ecosystem.

Model a world where everybody's self-perception of their mating value is just a little bit higher than their actual value - in other words, one not too far off from reality. Some segment of this population will drop their standards in the face of repeated rejection, and then eventually find a partner because of this. Their "lowered standards" become an accurate self-perception of reality. But some segment of the population will be unwilling to do this. They have a problem - they cannot find a partner no matter how hard they look.

A problem creates a market. People who can't find a partner turn to dating apps to find a partner - some may pay, and a lot more will click on ads. There's a decent chance that dating app management isn't consciously optimizing for failure in dating and success in clicking on ads. However, all the apps that are good at finding partners for their customers find that their customers disappear, while the apps that are good at getting people to click on ads generate huge amounts of revenue and take over the market. Which is entirely composed of people who don't actually want to find a partner, anyway, because those people who care more about the outcome of finding a partner will usually drop their standards enough to find one.

The same dynamic applies in many other markets. Evolution and selection bias > intent and intelligent design. The market ends up composed of people who can't achieve the ostensible purpose of the market, largely through their own actions, because people who can drop out of the market. Happy people often go through life with very few transactions: they might change jobs a couple times early in their career before finding a boss and job they're happy with and staying there until retirement, or they date around a little and then find a partner they marry for life, or they might rent a couple apartments before buying a house, renovating once, and then staying in it for 40 years. The transactions are overwhelmingly composed of people who are dissatisfied, because that's why they're buying things.

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I don't know... mid 2010's pre-match.com OkCupid and PlentyOfFish seem to get a lot of love. Not saying they didn't have problems but they did actually match a lot of happy couples and online dating didn't feel like nearly as much of a wasteland as it does today
You ran not one, but two, dating apps that were your own apps, and were not part of a company?

Which apps were these? What were your user metrics?

Seems somewhat suspect to extrapolate from your personal experience to what the large dating apps are allegedly doing if you are not approaching their scale. You've mentioned your personal experience as some kind of authority a few times now in this discussion, why not name the two apps directly? Apologies if I missed it but I don't see where you gave any indication that this appeal to authority is credible.

Gale-Shapely provides the best possible stable outcome for the proposing side.

You’re never going to match with people who aren’t actively looking.

You’re only ever going to match with the people who are looking at the same time as you.

Your criticisms are true of real life without apps. That’s why we have this thing called “divorce”.

Comments like these always seem to miss the point. They aren’t trying to solve marriage. They are trying to create social lubricants to get young people more interested in dating. This algorithm tries to ensure that at the very least your core values at the time match up.

I don’t think you are legally bound to marry. And if it stops working, divorce before resentment.
the stated vs revealed preference problem is very big when it comes to dating, and it's made worse that a lot of people have confusion and even shame about what their preferences actually are. And a lot of preferences are mimetic, which means demand for certain things is always outstripping supply. So it's really not even worth it to figure out someone's preferences if there is literally no one out there to pair them to.
I think what you should be doing as a dating app — much more so if a government one — is some kind of RL based on length of actual marriage.

At least, you should have some algorithm estimating marriage length / likelihood of divorce based on your (non-app) statistics, and then use that as one factor for your in-app calculations.

Just to call out, you're implicitly assuming that strictly lower divorce rates is the correct end-goal. This may not be what you really want, eg you might find many abusive pairings where the weaker partner is too scared to leave. In the style of "The optimal amount of fraud is non-zero" [1], I'll claim that the optimal amount of divorce is non-zero.

[1] https://www.bitsaboutmoney.com/archive/optimal-amount-of-fra...

0-worlding
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Which side do they screw over (the choosers get their worst possible match and the bidders get their best possible match)
Depending on the which gender does the initiation; the result is either male optimal (males get the best he can get, females gets the worst among those she would tolerate) or female optimal. I wonder which version this one is.
Is it necessarily so?

And doesn't something of the same kind happen in real-life, in some societies or countries or cities male-optimal and in others female-optimal ?

It is necessarily so if you're using Gale-Shapley for heterosexual matching, yes.
The pilot targeting only government workers reminds me a lot of Lee Kuan Yew's various eugenics policies:

https://en.wikipedia.org/wiki/Eugenics#In_Singapore

It certainly doesn't help that the app conveniently targets those between 21 to 35 years of age, which is just before advanced maternal age (also the age where single Singaporeans qualify for public housing).

Positive eugenics never stopped and there's nothing wrong about it. Also there's nothing wrong with the government promoting the creation of stable families with children born before DS risk exceeds 1/100.
I mean, it sucks if you're a taxpayer over 35 that wants to use the service, especially considering that DS is easy to screen for using modern tests of a mother's blood and Singapore has a reasonable abortion policy
"6 feet, 6 figures, 6 inches" is Eugenics too. The modern Affluent White Female Urban Liberal (AWFUL) is a massive Eugenicist, even if and especially if they loudly proclaim that they are not.
This is tangential but I wrote a Go utility a while back to implement this stable matching algorithm

https://github.com/abhchand/stable-matching

It’s an effective yet simple algorithm. Also widely used in North America to match medical students with their residency of choice.

Begging economists and dating app designers to understand that the problems with the dating market are not a matching problem but a clearing problem. It's very tempting to think that if one could devise a sufficiently clever algorithm they could solve these problems but it's simply barking up the wrong tree.
What's a clearing problem? (A quick Google did not turn up an answer.)
GPT

“A clearing problem” usually means a problem with settling or completing a transaction.

For example:

In banking/finance, “clearing” is the process of verifying and settling payments between banks. A clearing problem could mean a payment is delayed, rejected, or hasn’t been properly matched.

In markets, it can mean buyers and sellers aren’t being matched at the expected price/quantity.

More generally, it can mean something is preventing an obligation or transaction from being finalized.

I think they meant post-match personal incompatibilities exist that can't be accounted for in even the most thorough profile
It's tempting to think of the problems of a dating market as a matching problem because men and women are almost equal in numbers so we just have to match them all up. A clearing problem occurs in markets, (even markets with ~equal supply and demand) when the reserve price of the transaction is not met. For example, the reason I don't own a Ferrari isn't because there isn't 1 Ferrari out there for sale, it's because I don't have enough cash to clear the transaction. Building a more powerful car sales website won't fix this problem. The reserve price is not met.

The dating market is similarly full of people who would like to clear transactions (economist speak for form a relationship), yet cannot because they do not meet the reserve price of those they want to date.

I hope my Ferrari analogy helps to illustrate the core concept, but you have realize that dating markets are even tougher than car markets, because dating is a barter market. For a transaction to clear, there needs to be a double coincidence of wants -- you can't simply use a medium of exchange like dollars to cut the transaction in half. Imagine if to buy a Ferrari you had to find a seller who also happened to need $350k worth of Linux sysadmin work done.

This seems to raise the question of why there is a clearing problem.

Is it fair to say a clearing problem is a missmatch of expectations?

It seems to me that people are simultaneously becoming more specific and demanding, while simultaneously seeking risk aversion and comfort

So why, in your opinion, do people not finalise the deal?
They do not want to.

More specifically, they would rather be single than pair with any of the options that are realistically available to them. Hence, the market fails to clear.

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Perhaps then the government could spend money producing propaganda to convince people to lower their standards. Maybe they could fund TV shows about unattractive people with no money having a good time together - I think China is doing something similar.
Anyone tried this algo to match co-founders?
A reminder that Singapore has plenty of history with government-sponsored dating, notably the Social Development Unit (SDU), aka "Single, Desperate and Ugly".

https://en.wikipedia.org/wiki/Social_Development_Network

Created appropriately enough in 1984, it had explicitly eugenicist goals (discussed at length in Wikipedia), since Lee Kuan Yew was quite worried about the Idiocracy scenario where the lower classes out-procreate top talent and lead to societal decline.

Trying to fix falling birth rates with an official government dating app shows they don't understand the problem in the slightest, as dating apps are one of the main causes of declining birth rates in the first place.
Maybe part of the solution for any country dealing with low marriage rate is to ban all private dating apps and only government issued apps are allowed.

Private ones will always prioritize profit which means they want you to keep using the app which means they don’t want you to find a partner.

Modern dating apps makes it so that an average woman will have unlimited choices but the average man will have next to none. Before dating apps, they could have been a good match. But with dating apps, the woman has unlimited higher value men. The problem is that these higher value men will not commit because they also have unlimited options.

Modern dating apps are just manifesting natural instincts on steroids. I don’t blame either party.

o__O my url bar doesn’t currently say Reddit? This argument feels red pilled and not curious nor productive. Women have plenty of valid frustrations with the dating pool. I don’t live in SF but the last woman whom I talked to there told me many of y’all just have mattresses on the floor and like no bed frame. There are places to improve fellas

Yeah, dating apps are problematic. No, nobody here is going to fix that with another stupid app. But I think a lot of these “meet with a group of strangers at dinner” biz concepts are cool and gonna try some soon.

It’s just reality when all the internet virtue signaling is turned off.

I’m not blaming anyone. I think all parties are behaving as they should.

This assumes everyone puts their preferences and dealbreakers faithfully and not so as to score best/most chicks. I wonder what comes out of this.
There is a very simple solution to the problem. Just add a tax to single people and childless couples or reverse give huge tax break to married and couple with kids.

In past the motive for marriage was sex and companionship which was frowned in society if out of wedlock. Now it is not frowned upon. The old constraint is gone and we need to add new constraints if we want to solve the problem.

thats already the status quo in the US and it isn’t curbing a decline in marriage
A very funny but evidence backed policy would be free GLP-1s for women. A recent study showed GLP-1 use resulted in a 29 percentage point increase in the likelihood of a woman finding a relationship. A woman converting to conservative Protestantism for comparison results in a 2.7 percentage point increase.
GLP-1's are so good for society we should be giving it out for free on every street corner.
Singapore already does this! There are huge housing and tax incentives.
Cute. Of course, beyond basic deal breakers, neither do people know their preferences (but they think they do), nor do the majority of preference categories actually matter.

This is a common problem with all dating apps. Specifically, interests, hobbies, daily routines, objectives, etc. have nothing to do with compatibility.

“We like the same things!” is the compatibility signal of a naive 22-yr old…