Showing posts with label UCLA. Show all posts
Showing posts with label UCLA. Show all posts

Sunday, October 03, 2021

Some Baseball Musings on the Last Day of the 2021 Regular Season

Despite some possibilities for drama, there won't be any Game 163 for any teams. (There was late-inning drama in two of the relevant AL games today, and that is why there won't be any of these extra games.)

We (i.e., the Dodgers) have a win-or-go-home Wild Card 'playoff' against the Cardinals on Wednesday. I'll have it on silent at first while I am participating as a panelist in the UCLA math department job-application panel (which I suggested to our department head that we should do, and thankfully we're doing it), and then I'll have sound on for most of the game once the panel is over.

Trea Turner ended up winning the NL battle title handily. I have trouble picking an MVP, because I think the Padres going into the tank will hurt Tatis Jr.'s chances. That said, I still think he merits it, although if we're going to do pure performance after the Padres fall, maybe Juan Soto ultimately was somewhat better overall? The NL Cy Young award is hard to predict, as a lot of votes will get split. Right now, I think it will be Walker Buehler by a nose over Scherzer, Burnes, and Zack Wheeler. UrĂ­as will get some down-ballot votes, but despite the gaudy win totals, the other pitchers I mentioned (and some I have not) have been better them him. Jonathan India will when the NL ROY.

In the AL, Ohtani is the MVP. I think Gerrit Cole is a slightly better Cy Young choice than Robbie Ray, who many announcers seem to think is the heavy favorite. He's a good choice, but I think that Cole has been slightly better. Randy Arozarena is technically still a rookie, but I think I need to look more closely at some of the other viable options as well.

Finally, reports of Joey Votto's demise appear to have been greatly exaggerated (although he has changed his hitting style).

Tuesday, October 06, 2020

2020 Nobel Prize in Physics

The 2020 Nobel Prize in Physics was announced today.

The first thing that I noticed was that my Mathematical Institute (Unversity of Oxford) colleague Roger Penrose got half the prize. Additionally, Andrea Ghez from UCLA's physics department shared the other half of the prize with Reinhard Genzel. Ghez also got a Ph.D. from Caltech in 1992, so several of my institutions (and my former home department at Oxford!) did very well today. Congratulations!
Here is the terse citation: 

The Royal Swedish Academy of Sciences has decided to award the Nobel Prize in Physics 2020 with one half to Roger Penrose "for the discovery that black hole formation is a robust prediction of the general theory of relativity" and and the other half jointly to Reinhard Genzel and Andrea Ghez "for the discovery of a supermassive compact object at the centre of our galaxy".

Some other websites to look at are the popular blurb and more advanced information from the Nobel page. Additionally, here are UCLA's press release and a blurb from University of Oxford's Mathematical Institute.

Tuesday, September 01, 2020

UCLA's New Undergraduate Major in "Data Theory"

UCLA has a new undergraduate major in Data Theory. Here is its catalog entry.



Update: Also see some hyperlinks in my previous blog entry about our new major.

Wednesday, June 17, 2020

Congratulations to the 2020 Graduates from Our Research Group! (Humans First; Mathematicians Second)

We had our commencement ceremony.

CONGRATULATIONS to the Class of 2020 from the research group!

And thanks to Prof. Chad Topaz for a wonderful commencement speech (one of the best I ever heard and so meaningful to me). Thanks to the guests who joined us.

The graduating class of 2020:

Postdoc: Heather Zinn Brooks

Undergrads: Qinyi Chen, Unchitta Kanjanasaratool, Tony Liu

PhD students: Michelle Feng, Yacoub Kureh, William Oakley

#truecolors

Here are a couple of pictures.


And here is the text of Chad's speech.

"Are mathematicians human?"

I was very unsure of how to begin this speech, and so I did the natural thing: I Googled “graduation speech opening” and I found a site with the following advice, which I am going to obey.

1. Offer formal words recognizing the honored guests.
I hereby decree that this honored group seems familiar; have we met before?

2. Use humor. If you are confident that your humor will work, making everyone laugh will be a great start.
I am confident. Please go ahead and laugh now.

3. Enthusiastically congratulate graduates on their success.
From my heart, congratulations.

4. State the topic of your speech.
Those of you who know me know that I often go against the crowd. Some graduation speech themes are all too common, so I’ll be avoiding the following messages in this speech:
- Challenges are opportunities
- Be yourself
- The world is your oyster
- Love will triumph over all
- With great power comes great responsibility

So, for this speech, I have chosen the topic “Are mathematicians human?"

I was a postdoctoral fellow in this department from 2003 - 2006. During the last year of my postdoc, and wanting desperately to stay in academia, I applied for tenure track jobs. While I was lucky to get a couple of offers, none of the offers would have resolved my dual career couple issues. It seemed reasonable that I'd have a better chance of finding work in Los Angeles than my husband would in rural Maine. So I made one of the hardest decisions of my life: I stayed in Los Angeles and, in doing so, quit being a mathematician. But not before, in a moment of extreme frustration and angst, I committed the only physically violent act of my adult life by hurling a bowl of oatmeal at the wall of my apartment.

Sometimes we don't realize what part of our identity means until we don't have it anymore. I didn't see this coming, but when I could no longer call myself a mathematician, or at least not professionally, I wasn't sure what I was anymore.

The next year of my life began fairly miserably. I worked as a college administrator on another campus in a unit that was a poor fit for me. I had few personal goals other than feeling sorry myself. Gradually, though, things turned around. I slowly built stronger relationships with friends. I got involved in service work related to issues I cared about. I rediscovered how much I loved playing chamber works with other musicians. I reconnected with all of the parts of myself that I had let shrink.

I stopped identifying principally as a mathematician and started identifying principally as a human.

But what makes us human? Characteristics and abilities once thought to distinguish us from other animals -- the use of tools, the ability to recognize ourselves, the size of our brains, and much more -- turn out to be found in various corners of the animal kingdom. Some evidence from the natural sciences, though, does suggest what makes humans unique.

First, we are human because of the degree to which we are wired to help each other. In psychology experiments, children as young as 14 months will spontaneously help a person who is struggling or who looks worried or who drops an item. At age two years, children will help someone who isn't even aware of their own need for help, say, because they didn't realize they had dropped an item. And rewards don't seem to play a role. In experiments on 20 month old toddlers, those who had previously received rewards for being helpful acted equally helpfully as a control group that hadn't received rewards. Other species certainly have been observed to engage in helping behavior, but within different parameters. For instance, close by on the evolutionary tree, chimpanzees will share food. Chimps, however, appear to be far more selective about their helping behavior, sharing only with close relatives or potential mates. In short, humans appear to be wired to be indiscriminately cooperative.

Second, we are human because of our ability to imagine and know things beyond our senses. Take the famous psychology experiment called the Sally-Anne task. In this task, there are two dolls named Sally and Anne. A young child, who is the subject of the experiment, sees Sally putting a marble in a basket while Anne watches. Then Sally leaves the room. While she's gone, Anne removes the marble from the basket and puts it inside a box. Then Sally comes back into the room. The experimenter asks the child where Sally will look for the marble, most children answer that Sally will look in the basket, where she had originally left it. The child knows that the marble is not there, but understands that Sally will have a different thought. Let me emphasize this: it's not merely that the child knows that the marble moved. The child can put themself in the mindset of another person and imagine what that person thinks. On the other hand, in a version of the experiment designed to assess chimpanzees, the chimps generally failed the test.

So two possible answers to "what makes us human" are our level of radical, selfless cooperation and our capacity to put ourselves in the shoes of another, a quality we sometimes refer to as empathy.

This speech would not be authentic if I did not call out that we are living during challenging times. Now let's be real: epidemic disease has been with humankind for a long time, with the earliest records of an influenza-like epidemic coming from central and Southern Asia around 1200 BC. Racial injustice has been with us in the United States since before we even WERE the United States. Still, we seem to be in an especially challenging moment right now, with bungled public health efforts and the continued killing of Black people by the police. It can be hard to believe that cooperation and empathy are our nature. So I take solace in the aforementioned scientific evidence and I say thank goodness for lab experiments.

It's not just on the national and international stages that the better parts of human nature can be obscured. You will have moments in your professional and personal lives when you will have the opportunity to put your humanity second to more immediate or more tangible or just plan easier ends. My message to you today is simple: always, first and foremost, be a human.

I asked Mason to give me a few very brief words about the human qualities of each of you, graduates. Mason respected my request... except for the brevity part! So please know that when I mention each of you, the brevity is mine, not his.

Heather, you are a valued and highly respected source of wisdom.

Michelle, your creativity and passion are inspirational.

Yacoub, you are driven to help, from each individual student up to saving the world.

Will, your good cheer powers not only your own efforts, but lifts those around you.

Quinyi, you have a rare blend of determination and humility.

Unchitta, you have limitless compassion.

Tony, you fearlessly reach out to those in need.

By the way, while today is mostly about you, graduates, it is also a little bit about Mason. It doesn't escape my notice that your advisor displays stellar human qualities as well, which is perhaps why we are drawn to him.

To the seven honored and accomplished celebrants, I wish you hearty congratulations and all the best for the future. Thanks to your hard work and dedication, you are outstanding students, scholars, teachers, mathematicians, thinkers. But most of all, you are outstanding humans.

Thursday, June 04, 2020

A Great Ph.D. Defense by Dr. Will Oakley

Congratulations to my Ph.D. student Will Oakley on an excellent defense of his thesis!

Thursday, May 28, 2020

An Awesome Ph.D. Defense by Dr. Yacoub Kureh!

Congratulations to my Ph.D. student Yacoub Kureh on an awesome defense of his thesis!

Friday, March 13, 2020

A Sign of the End of Days

I saw in an e-mail that Oxford has given blanket approval for vivas (i.e., thesis defenses) by video conference.

Now we know that we've reached the end of days.

(That said, they were faster than UCLA for blanket approval.)

Monday, February 24, 2020

"Automatic Generation of School Bus Routes in Los Angeles"

Our report for the UCLA Institute of Transportation Studies from our collaboration with the Los Angeles Unified School District (LAUSD) is now publicly available. Here are some details.

Title: Automatic Generation of School Bus Routes in Los Angeles

Authors: Mason A. Porter, David J. Spender, and Cu Hauw ("Willy") Hung

Abstract: The goal of our project is to automatically generate school bus routes for the Los Angeles Unified School District (LAUSD). We examined four algorithms, including two from the existing literature and two new ones that we developed. A major focus of our work was the construction of “mixed-load routes,” which transport students from multiple schools. Based on our measurements (whose imperfections we discuss), three of the four algorithms perform at least as well as the existing route plan, and one of those three performs better than the existing route plan. We also delivered a user-friendly routing program to LAUSD that uses one of these algorithms, and we have made our software publicly available. Our insights and results are also applicable to other school districts that permit mixed-load routing.

Thursday, November 28, 2019

My TDA (Topological Data Analysis) Origin Story

Based on what I saw as an undergraduate, I thought that algebraic topology was hopelessly abstract, and then I encountered Konstantin Mischaikow's work when I was a postdoc at Georgia Tech. He was using these ideas to analyze experimental data from areas like fluid mechanics. This stuck in my head, but I didn't work on these topics for many years. However, it stuck in the back of my head for about a decade, as this had made an impression on me. (I was aware of work of some others as well, but this is the one that made an impression, because of the close collaboration with experimentalists.) I was spending a bunch of time on granular networks as well as on generalizing network analysis from graphs to various more complicated structures (and I also had the desire to look more at "higher-order" interactions more generally).

During one of my daily arXiv routines, I noticed a paper by Konstantin and collaborators that used topological data analysis (TDA), so I saw that we were looking at the same systems, but in different ways. I contacted him, visited him early in 2013, and we started a joint TDA project --- but it turned out to be on spreading dynamics on networks, rather than on granular networks. Our first paper (which was led by Dane Taylor and coauthored with many other excellent people, including my Oxford colleague Heather Harrington) was published in final form in Nature Communications in 2015. I viewed this as just one paper; I never intended to start a large new direction in my research program. Back at Oxford, one student saw that I was part of that and wanted to work with Heather and me on applications of TDA. Then more students saw the 2015 paper and what this student was doing, and they wanted to work with us on TDA.

After I moved to UCLA, more students (starting with Michelle Feng) saw that I had some papers on TDA and wanted to work with me on those topics, partly because they wanted to do things with applications but also wanted to continue pursuing more theoretical mathematical subjects as well. I also really like the idea of taking "traditionally pure" areas of mathematics and bringing more and more of them into applications. It's a really exciting thing to do. And the work on applications also yields really great insights into the mathematical theory. (Because it does go in both directions, after all.)

Most recently, at least among people who have officially joined my group, Abby Hickok saw the work that Michelle and I have been doing, and she has ideas for building further on that work. And now TDA (along with work involving the intersection of dynamics, networks, and simplicial complexes) has become an important part of my research program,

Anyway, it was an all an accident.

Saturday, November 23, 2019

Data Analysis of Exuberant and Uncouth College Fight Songs

Fivethirtyeight.com did some data analysis of college fight songs.

UCLA's fight song is apparently called "Sons of Westwood" (ugh).


How can they write such an article without mentioning Tom Lehrer?

Sunday, June 16, 2019

UCLA's 2019 Mathematics Commencement Ceremony

As you can see from the short video below, this is how we do things in the UCLA mathematics commencement ceremony.

(I am the one in bright red. It's because of my Cornell doctoral degree, but these are almost almost Somerville colors. You can tell the birds from the colors of their feathers.)



Many undergrads from my courses, as well as ones who are doing research projects with me, participated in the ceremony.

Before the ceremony, in the mathematics department lounge, our commencement speaker asked me if I was graduating. He said that I look very young, but I am more than a decade older than he is!

Friday, March 01, 2019

Course Nomenclature in our Imminent Data Theory Major


Thursday, December 07, 2017

'Thoughts and Prayers' and the Los Angeles Fires

Can 'thoughts and prayers' be exchanged for bitcoins? Asking for a friend.

For those of you wondering, I am safe. I have a utilitarian suitcase packed in case I need to leave home in a hurry, but things look clear for my place right now and UCLA is somewhat more normal today (though classes are cancelled again today).

The Hellscape video is really impressive!

Thursday, June 15, 2017

Participating in Commencement Ceremonies: Be Prepared

When participating in a commencement ceremony, it is important to come prepared.


During the Faculty Recession of the commencement ceremony, as professors started marching off the stage, the organist started things off with the theme to Star Wars.

I contend, however, that the Imperial March would have been far more appropriate.

Tuesday, January 31, 2017

A UCLA Math Undergrad's Data-Analysis Blog

UCLA undergraduate student Ritvik Kharkar, who is doing some research with me, is doing some spiffy data analysis on his blog. Go take a look at it!

It includes entries about community detection (in the Harry Potter universe), education issues, and UCLA salaries.

Monday, January 23, 2017

Congratulations to Dr. Charlie Marshak!

Congratulations to my UCLA Ph.D. student, Charlie Marshak, for successfully passing his thesis defense on Friday the 13th and for making the final changes and submitting his thesis (Applications of Network Science to Criminal Networks, University Education, and Ecology), which we then approved.

I became one of Charlie's supervisors last fall to help out his main official supervisor Andrea Bertozzi. Of course, although she doesn't get official credit for it (because she's a postdoc and isn't in the official listing), Puck Rombach has been Charlie's main supervisor in practice.

Wednesday, October 05, 2016

A Monstrous, Hungry Coffee Machine

The coffee machine in the UCLA statistics department looks like a monster! And it is hungry.

(In fact, as Piotr Szymański points out, it looks somewhat like the main character of this game. Also, humans are great at seeing faces everywhere ("pareidolia"; that is why googly eyes are wonderful.)

Thursday, September 22, 2016

Back on the West Side

Last night, I arrived back on the West Side, my first time living in this part of LA in more than 20 years (when I was living in my parents') house.

A couple of weeks ago, I set up my "boring, professional web page" at UCLA. I might make it more aesthetically more please at some point, though tons of information is there and pretty easy to find, so this isn't exactly a high priority. (But with the current amount of information, that's somewhat less easy than it used to be, and it would be nice to have something nice—so it's very low priority, but not 0 priority. Ask me in a couple of years, and we'll see if I've gotten around to it.)

And more generally I am setting myself up on practical things and simultaneously trying to get some work done.

Tuesday, September 20, 2016

So Long, and Thanks for All the Fish: A View from Park 40

Well, after knowing for more than half a year that I'll be leaving, we've now finally reached the end. It's been fun, and I'll be back early and often to visit. (And I am ever available electronically.)

Tonight is my last full day in Oxford. I fly out to LA tomorrow. I came to Oxford on 1 October 2007, so it's been almost a full 9 years. (And that was almost a full year after getting my job offer after interview escapades, which you can read about here and here. (And as a note to junior scientists, I strongly recommend blogging about your interview before the hiring committee makes its hiring decision. Seriously: This was an excellent idea on my part. :P)

This is a view from my Somerville office (Park 40) from the past 7 years.

I have chosen an angular view so that the main entrance to Penrose is in the picture. (I used that entrance for my first year in Somerville, and after a year I moved into an on-site flat, with its own entrances, that is attached to Penrose.)

And that other thing in the picture? Well, that is my gift to Somerville College, to be passed along over the generations from one tutor to another (preferably one in mathematics) and to be displayed in a prominent place in the College. And maybe in a few decades I'll read a history of Somerville College where the author will wonder where that piece of College lore came from.

(And maybe somebody will eventually find the other Screamer, which staff members somehow managed to lose early on in my time in Somerville when they moved my stuff from one office to another. So, yes, this one was actually purchased by the College to replace the original, and I am sure the second one must be around here somewhere.)



Also, I originally got the idea for a Screamer from Predrag Cvitanović, who has had one in his office at Georgia Tech for many years. I bought one when I got to Caltech as a postdoc, and I took that one with me to Oxford.

I am going to replace the Screamer, but I think it's time to pick a different figure for my UCLA office. I'll need to see who's available. I'll probably check if Poincaré is available, but I'm sure there will be many interesting choices.

Update: You can also see some discussion and a few more photos on the Facebook version of this post.

Thursday, July 21, 2016

What Happens in Westwood Stays in Westwood

I am off to visit LA for a few days to help set things up a bit at UCLA and to hunt for apartments (as opposed to Pokémon) in Westwood.