Tina Eliassi-Rad

And like when I would do searches there, and this is many years ago, I would get more like physics books than like when I lived elsewhere. They would sell me they wouldn't show me as much physics books, right, just based on the location, the zip code. And so there's some of that that's going on. And I feel like that is more of the problem of like not really serving the individual or exploring.

And like when I would do searches there, and this is many years ago, I would get more like physics books than like when I lived elsewhere. They would sell me they wouldn't show me as much physics books, right, just based on the location, the zip code. And so there's some of that that's going on. And I feel like that is more of the problem of like not really serving the individual or exploring.

as much as possible.

as much as possible.

Yeah, so, you know, it depends on what kind of network it is, right? So in social networks, for example, we know that there are two dominant processes that form social networks. One is closing of what we're calling wedges. So if I am friends with you and you are friends with Jennifer, then I will become friends with Jennifer, right? We close that triangle.

Yeah, so, you know, it depends on what kind of network it is, right? So in social networks, for example, we know that there are two dominant processes that form social networks. One is closing of what we're calling wedges. So if I am friends with you and you are friends with Jennifer, then I will become friends with Jennifer, right? We close that triangle.

And in fact, if you and I have, for example, many common friends, or let's say me and Jennifer in my example, we have many common friends and we are not friends, then there is something going on, that there was lots of opportunities that we could become friends, but we chose not to become friends, right?

And in fact, if you and I have, for example, many common friends, or let's say me and Jennifer in my example, we have many common friends and we are not friends, then there is something going on, that there was lots of opportunities that we could become friends, but we chose not to become friends, right?

Now, there's also, of course, partial observability in that, like, maybe I didn't observe it, right? However big your data is, you're not omniscient, you don't see things, right? But we do expect that friend of a friend is also a friend. That's one. The other one is this notion of preferential attachment, right? That everybody wants to connect to a star.

Now, there's also, of course, partial observability in that, like, maybe I didn't observe it, right? However big your data is, you're not omniscient, you don't see things, right? But we do expect that friend of a friend is also a friend. That's one. The other one is this notion of preferential attachment, right? That everybody wants to connect to a star.

And so you're interested in like, basically those are the two big patterns. And then you look at deviations from that. So a work that was done by John Kleinberg at Cornell is, He's a very well-known computer science professor. This is a while back, was think Facebook, for example. Who is your romantic partner on Facebook?

And so you're interested in like, basically those are the two big patterns. And then you look at deviations from that. So a work that was done by John Kleinberg at Cornell is, He's a very well-known computer science professor. This is a while back, was think Facebook, for example. Who is your romantic partner on Facebook?

And he and his colleagues showed that basically you are the center of a flower and you have petals around you. These petals could be your high school buddies or college buddies, etc. They have just more triangles in them. And people who fall outside of these petals and have a lot of connections to these petals are either your sibling or your romantic partner.

And he and his colleagues showed that basically you are the center of a flower and you have petals around you. These petals could be your high school buddies or college buddies, etc. They have just more triangles in them. And people who fall outside of these petals and have a lot of connections to these petals are either your sibling or your romantic partner.

That is, you are introducing them to other facets of your life. And they show that when that connections stopped, establishment of those connections stopped, it's a leading indicator that you will break up.

That is, you are introducing them to other facets of your life. And they show that when that connections stopped, establishment of those connections stopped, it's a leading indicator that you will break up.

Yeah. So you were talking about which connections to pay attention to, right? It's like, so those are some of the things that are fun when you look at social networks. I mean, biological networks are totally different. So in biological networks, it's a whole other ball of wax. There's not like, you're not looking for common friends.

Yeah. So you were talking about which connections to pay attention to, right? It's like, so those are some of the things that are fun when you look at social networks. I mean, biological networks are totally different. So in biological networks, it's a whole other ball of wax. There's not like, you're not looking for common friends.

You're looking more for like complementarity between different proteins that serve some function.

You're looking more for like complementarity between different proteins that serve some function.