Tuesday, September 30, 2008
The Sarah Palin Turing test
I was wondering .... was it just me, or did anyone else have the reaction "Gosh, her answer sounds like it was generated from a statistical language model trained on a corpus of random Republican talking points?"
Sunday, September 28, 2008
Friday, September 26, 2008
Summary of the morning's news...
Sometime last night, the bailout became no bailout. Obama, via the NYT:
“What I’ve found, and I think it was confirmed today, is that when you inject presidential politics into delicate negotiations, it’s not necessarily as helpful as it needs to be,” Mr. Obama told reporters Thursday evening. “Just because there is a lot of glare of the spotlight, there’s the potential for posturing or suspicions. When you’re not worrying about who’s getting credit, or who’s getting blamed, then things tend to move forward a little more constructively.”The Republican side of the story, as told by Kevin Smith, aid to House Republican Leader Boehner:
But a top aide to Mr. Boehner said it was Democrats who had done the political posturing. The aide, Kevin Smith, said Republicans revolted, in part, because they were chafing at what they saw as an attempt by Democrats to jam through an agreement on the bailout early Thursday and deny Mr. McCain an opportunity to participate in the agreement.
Tuesday, September 09, 2008
The Value of Experience


The great thing about the web is that if you can imagine a question and if you spend a little time looking you can find often someone that already answered the question. This weekend I wondered: there's all this talk about who's experienced enough to be president - what does the data actually say about how experience correlates with performance? Turns out that they asked the same question at electoral-vote.com and got some interesting answers.
The first scatter plot (or maybe it's the second?) above plots total years of experience against rank for all presidents up to W. Bush, where rank=1 for Abraham Lincoln, and rank=42 for Warren Harding (who?). This is a consensus ranking by historians, so it's somewhat subjective, but there's no apparent correlation between x and y here at all. The second scatter plot (or was it the first?) compares experience to a random permutation of rank. Can you see any difference? I can't. If you're curious, and you compute r^2 for this dataset, then you get a value of 0.008 - essentially nil (an r^2 around 0.5 would be a strong correlation for data of this sort). I poked around in Excel for a while, and the data looks just as uncorrelated if you look at gubernatorial experience, for instance, and a couple of other variants I tried.
So what does that mean? obviously, experience matters for any job, right? Well, one point is that there is a sample bias here - the data is entirely on people that were at least arguably well-qualified for the job, not the result of controlled scientific experiment in which scientists took [wo]men off the street at random and dropped them into the White House. (Insert Sarah Palin joke here if you like). It's wrong to say experience doesn't matter: more accurately the data says that among people qualified enough to be elected, more experience does not correlate with better performance.
An second point: from a machine learning point of view, certainly not all experiences are created equal. Two important properties are the recency and diversity of experiences - for instance, 1,000 samples of poll data collected last week are better than 10,000 samples of polling data collected 50 years ago, and 1,000 samples collected from 50 states is better than 10,000 samples collected from just Utah and Nevada. This data says little about the quality of the experience. Will John McCain's experience as a child and young man in the 1930's and 40's help him be a better president? How much does he actually know now, midway through his third decade in congress, that he didn't know midway through his first?
Other explanations are also possible. Maybe being president is just too unlike other jobs for experience to matter much. Or maybe the Lincolns and FDRs of the world are so remarkable that they rise quickly through the ranks and are still great, while the Buchanans, Garfields, and Van Burens will never be more than mediocre no longer how long they slog along.
Or maybe there's some other explanation.
So what does this all mean? What am I, a pundit? In terms of this week's talking points, neither party scores much - Team Red seems to have all but abandoned the experience-vs-celebrity story and are busy trying to co-opt Team Blue's message of change/new faces. But there's still a lot of noise about how much experience Palin has, and how it compares to Obama's, and I think it's worth noting that a major fraction of the talking-head time this cycle has been (and certainly will be) spent on a point that is a matter of faith, not a matter of objective fact. Once you look at the data, it's clear that simple miles-on-the-odometer experience does not make tend make one a better president - or at least, if a trend exists, it is extremely small.
Monday, August 25, 2008
politics shmolitics, as long as it swings
A clever YouTube video produced by my good friend Judy Minot.
Saturday, July 26, 2008
Another performance by Smokestack Lightinin'
This one was at the bizarrely inspired 1st Annual Alexander Berkman Festival, and was captured in full audio glory by Er1k Riebling (thanks Er1k!) The whole set (20min) consisted of:
Sunday, May 18, 2008
Upcoming gig
I'll be playing (mostly mandolin) Tues night in Braddock, with the band Smokestack Lightenin' for a fundraiser for Unseam’d Shakespeare Company’s Out of this Furnace: project. The headliner is Anne Feeney.
Where: Elks Lodge #883- 424 Library Street, Braddock, Pennsylvania
When: Tuesday May 20, 2008 7:00 PM-11:00PM
Tickets: $25 (or pay what you can), available at the door (cash/check only)
Contact: Tim Dawson, 412-621-0244 for directions and information
Where: Elks Lodge #883- 424 Library Street, Braddock, Pennsylvania
When: Tuesday May 20, 2008 7:00 PM-11:00PM
Tickets: $25 (or pay what you can), available at the door (cash/check only)
Contact: Tim Dawson, 412-621-0244 for directions and information
Friday, May 16, 2008
We have violated the prime directive
Noah Smith and I are co-supervising Tae Yano on a project involving analysis of political blogs, and Tae left a pile of results and code on her CMU web site as a way of communicating with us...world-readable. Surprisingly someone at one of the blogs she spidered, Little Green Footballs, actually noticed, leading to a lot of investigative work in this fascinating thread:
I'm mostly amused (as you can tell), but also impressed at (1) how much was uncovered about Tae, Noah and me and (2) how much of this obscure statistical NLP code the LGF community was able to figure out, communally. The peril and power of the internet.
Anyone know what this page at Carnegie Mellon means? It’s some kind of experiment that involves comments posted at LGF, and I have a feeling it’s not friendly.Since this morning, Tae chmod'ed all her code to hide it, but I suggested to Tae that she keep it visible, since folks were having so much fun with it. (Of course now she's embarassed and wants to clean up her code first...) Noah and I also wrote an open letter to LGF explaining what was happening.
...
comment #5: Maybe it's post-modern poetry, academia-style? Using LGF comments as gibberish to transcend interpretation?
...
comment #18: Obviously it's a KGB plot.
...
#12: there's a Kos directory too. Probably just too what they consider to be partisan sites to test some kind of language algorithms or something
...
#20: I think they are doing a text analysis looking for Charles' sock puppets -- like the way some trolls accuse Robert Spencer of posting as Hugh
...
#23: Looks like they are doing another election-year study looking at patterns of argument or other aspects of communication.
...
#47: Who ever thought that garbage labeled as "research" could be so sophisticated and at the same time be so worthless. ... Polishing farts to get Piled higher and Deeper has become, for the most part, an ephemeral exercise in self deception. [ouch! sounds like my last grant review].
...
#48: This isn't that advanced of stuff - we are working on a simillar concept for internal corporate communications. This has been around a while.
....
#60: EXPERIMENTATION WITHOUT REPRESENTATION! I demand compensation!
...
#61: I wonder if linking to their experiment will introduce fatal feedback loops, leading to a disturbance in the Krell mind-field and possible space-time discontinuity?
...
#79: It looks to my un-Pythonesque eye like a programmer is using the cosine function to create some kind of mapping on how comments refer to one another based on comment location in the thread; and looking at different types of postings from Charles (open thread, breaking news, news outlet criticisms) to see if there are any trends in the discussions that vary according to the posting type. That has to be one of the worst run-on sentences I've ever written.
...
#92: [#64: "What is port sniffing?"] after you pour some in the glass, but before you take a sip, swirl it around a bit and inhale whist the dark chocolate is melting on your tongue......
...
#162: Ahh, so basically it's a merger between post-Marxist deconstructionism and THX-1138-esque Orwellian personality dehumanization.
...
#172: I liked the method of withdrawing all posts by 204 commenters, then asking the system to predict what those posts were (or *if* the post existed, I think) based on all the rest.
...
#187: ok here's how I see it. There is a whole group at Carnegie Mellon CS department doing research in Artificial Intelligence by running statistics on blogs. A grad student Tae Yano stashed her research files on a server and left them wide open to WWW. The files pertain to running basic stats on DK and LGF, up to cosine similarity. The AI goal would be to have a blog-commenting software indistinguishable from a blog-commenting human. For all I know, this, or any other comment, is already written by a python script.
...
#277: [Quoted from a grant proposal Noah & I wrote that got unearthed, along with various other papers, pictures of Noah's cats, Tae's cv, her picture, her programming project on knitting, wedding announcement, etc:] "Political text is often indirect, sarcastic, repetitive, hyperbolic, emotional, biased, manipulative, and riddled with unstated assumptions." - Byte me.
...
#314: So some students are doing research on blogs. No big deal. It was interesting to see what it was about, but that's about it. I don't think they feel the need to protect their files. Why should they? Who would want to mess with that? It's just a school project, I don't see point of "exposing" the students and publicizing their information. At least that's my take.
...
#316: I noticed that the research group to which she belongs is partially funded by a DARPA grant.
...
#361: And the same techniques/analyses will probably work on Arabic-language websites, too.
...
#428: Are terrorists ‘phone banking’ for Barack?
...
#474: magine a natural language program that could respond to comments with charm and style, sort of a robo-blogger. Now imagine an army of them, all set to monitor a different political blog, run by a campaign manager for a politician. Add to its writing ability an encyclopedic memory, with instant access to famous quotes, historical facts, trivia, statistics, and every word ever uttered by the opposition. You now have an army of ultimate bloggers, all completely under the control of one campaign manager... no more "going off message" by some underpaid/volunteer lackey, just high quality counter-opinion, ready to be inserted into the blogs of anyone who disagrees with your candidate. This research will eventually lead to robo-blogging to kill emerging scandals and alternative opinions on issues... no more Rathergates as they will be smothered in the cradle by the most charming bloggers around -- the poli-bots....
#482: She's trying for a data-mining tool tailored for blogs that separates "useful, thoughtful" information from all the mindless dreck in the blogosphere. Lotsa luck with that! As an aside, I've been on the Carnegie Mellon campus, toured the Computer Science department, and met with CS faculty. It's a gorgeous campus. The school clearly has big bucks. CMU holds numerous contracts with various government agencies related to the information technology aspects of defense, computer security, homeland security, and similar "black ops" topics. At least some people on that campus have intimate access to NSA, DOD, and CIA. It's a spooky place.
...
#489: We should, for amusements sake, keep an eye open for a KOS diary about this. There may be some entertaining histrionics and conniption fits over their being the unwitting subject of DARPA funded research.
...
#492: But but but... Markos is a CIA agent.... dKos is a DARPA funded research project....
...
#496: Don't spill the beans. The Koslings haven't figured any of that out yet. Agent Markos will have a rough time of it when he is exposed as being a double secret agent of the Zionist conspiracy. Don't blow his cover.
...
#497: From this, we conclude that LGF not only has MORE numbers than DKOS, but BIGGER numbers as well. If YOU TOO want bigger numbers, choose LGF brand blogs.
...
#514: Was just thinking that all you people have too much time on your hands...but then it occurred to me I'm sitting here reading all this.
...
#518: Looks like the whole thing has gone 404. My guess is that she just wanted a corpus of data for some programming project and, now that the object under study is aware of her, it's no longer useful. I don't see any dark purpose here. How evil can someone be who writes knitting software?
...
#519: I suspect that if the mice KNOW they are in an experiment, they will not produce the same results,as they would otherwise, thus invalidating the experiment.
...
#520: [re: #21 zombie: "Talk about pointless. People get PhDs for this crap."] Not really pointless. The "value" of this may be questionable though, at this point in time. As the web and bogosphere has grown exponentially in influence, there has been great interest in determining if real life outcomes can be affected by influential opinions posted on blogs -- and then re-created in numerous other places to mimick majority viewpoints. There are numerous companies invloved in this research-like activity which can be tailored for marketing, business intelligence financial trading, political campaign managment uses (for example, Umbria of Denver, CO was just sold to JD Power). They use primarily data visualization tools (like those used now by lawyers engaged in electronic data discovery) -- These are similar to the software tools used by intelligence services to monitor, track, analyze, for example, wireless (web/phone) transmissions and discussions originating in the US, and destined for overseas delivery in places like, say, Iran.
...
#531: Yea- shut down. I didn't get to it in time to even see what it was all about. So, now I'm depressed. And stuff.
I'm mostly amused (as you can tell), but also impressed at (1) how much was uncovered about Tae, Noah and me and (2) how much of this obscure statistical NLP code the LGF community was able to figure out, communally. The peril and power of the internet.
Monday, May 05, 2008
Warning: software is packaged by weight not volume, contents may settle on shipping
From Farber's IP list: EULAs have come to malware. So much for honor among thieves.
Thursday, May 01, 2008
Farecast and Fonolo
From Dave Farber's IP, news of a new company called Fonolo: a ‘Google’ for phone menus. The basic idea is simple: spider all those annoying phone menus and make every point inside one a URL, which you can reach by having a bot navigate to that point for you, and then call you when it gets there. From the video it sounds like the spidering is done manually, and the navigation is done using ASR to check progress (since the menus change frequently).
Like Farecast this is a nice example of using AI to solve consumer problems, by mining information that is, in principle public (in one case airfare prices, in the other phone menus), but in practice, inaccessible. And like Farecast, it's not at all obvious that the companies controlling that information will be happy about that mining - especially if people end up using it as a souped-up version of GetHuman.
This feels like the thin edge of a wedge to me. I predict that within five years there will be open AI warfare between consumer-oriented bots and corporate-controlled information...then again, maybe this is just wishful thinking. After all, I'm in the AI munitions business.
Like Farecast this is a nice example of using AI to solve consumer problems, by mining information that is, in principle public (in one case airfare prices, in the other phone menus), but in practice, inaccessible. And like Farecast, it's not at all obvious that the companies controlling that information will be happy about that mining - especially if people end up using it as a souped-up version of GetHuman.
This feels like the thin edge of a wedge to me. I predict that within five years there will be open AI warfare between consumer-oriented bots and corporate-controlled information...then again, maybe this is just wishful thinking. After all, I'm in the AI munitions business.
Thursday, April 24, 2008
Classifiers in the news
Here's a first for me - a blog post consisting of an actual decision tree. It classifies counties as going Clinton vs Obama. Wonder what the weights for a linear classifier would look like?
Wednesday, April 23, 2008
Somehow this seems more appropriate the day after
I was hoping for Obama to have a knockout win in Pennsylvania, just to end the madness...but no. Apparently, as the Three-Toed Sloth says, the voting will continue until morale improves.
Oh well, at least the telerobots will stop calling my house for a while....
Oh well, at least the telerobots will stop calling my house for a while....
Thursday, April 17, 2008
Valuable resource for sentiment analysis?
I didn't make it through last night's debate but it's an ill wind...one result seems to be a list of 11000+ comments that appear to be almost entirely negative in tone.
Monday, April 14, 2008
Sunday Forum: Nation of bridges
If you like Pittsburgh, baseball, Michael Chabon, and Barack Obama - and who doesn't? - there was a lovely essay in my Sunday paper: Nation of bridges
Friday, April 04, 2008
Sterling interview
Via Dave Farber's "Interesting Persons" list, an interview with Bruce Sterling on Life, the Internet and Everything, in which he discusses the role of colleges
A college is supposed to civilize the young. If you remove those functions merely in order to pump ones and zeros at student eyeballs, you are going to lose a lot of valuable cultural capital. An educated citizen is not a friction-free technocratic philistine myrmidon with an ISO rating. Those guys exist, don't get me wrong, but they bear the relationship to education that the Ron Paul campaign had to political reality.and himself
They say that those who worship the Muses end up running the Museums. Similarly, all futurists are doomed to become historians. The avant-garde becomes the gray eminences...
Tuesday, April 01, 2008
After hearing the David Evan's excellent talk "What Elements of an Online Social Networking Profile Predict Target-Rater Agreement in Personality?" I now know there there are three things I could tell you about that would (roughly speaking) help you more reliably assess my true personality. Here they are....
- Something I'm proud of.
- Something I'm kind of embarrassed by.
- A humorous video.
Sunday, March 23, 2008
They Told You Not To Reply
Via Dave Farber's IP list, how email leaks have helped raise $5000 for Seattle-area dog pounds:
They Told You Not To Reply
Wednesday, March 19, 2008
Wednesday, March 12, 2008
The Keys to My Heart
...should use at least 128 bits, I'd say. Via Dave Farber's IP list - and giving a new meaning to the phrase "security for embedded systems": A Heart Device Is Found Vulnerable to Hacker Attacks
Friday, March 07, 2008
Cut Once (Again)
For those that want to try out the latest learning technology in Thunderbird - the Cut Once Thunderbird Extension now has a spiffy new home page. And before you ask, no, I have no idea why the parrot. You'll have to ask Vitor or Ramnath.
Subscribe to:
Posts (Atom)