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Below are the 20 most recent journal entries recorded in David Molnar's LiveJournal:

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    Sunday, April 1st, 2012
    11:24 am
    Following the links from LJ's home page
    leads to, which leads to the picture linked below:

    "He probably doesn't like you."
    Wednesday, April 21st, 2010
    11:51 pm
    on needing to just do it...
    0) I want to start promoting to its users.
    1) I then want people from who join the registry to opt-in to sharing their family tree data with

    Why? Because marrow types are hereditary. If I am looking for a specific type, and if I am "close" with someone's type, I can ask them to ask their relatives to consider joining. Even if directly asking is not possible, this can give information about population genetics and marrow types. Today the state of the art is small scale studies, sometimes under 100 people.

    For 0) I can buy ads on but ideally I could show it to people who are already buying genetic tests from . To pull that off or pull off 1) I need to contact . LinkedIn shows I'm a 3rd degree contact with someone there who does business development, but I'm too chicken to pick up the phone and call him so far. Need to just do it.

    Thankfully, the good news is my sister has a "9 out of 10" donor undergoing workup now. It looks like she will get a marrow transplant. She could still use a "10 out of 10" donor, but this is so much better than nothing.

    That being said, there are plenty of other people who have no match. There's a lot to do here.

    What other sites besides should I go after?
    Tuesday, March 16th, 2010
    7:20 pm
    what I want
    Came across this slide as part of a presentation on "Immunogenomics and Stem Cell Therapeutics."

    There's variation between states in how often a particular tissue type ("HLA haplotype") occurs, even when you restrict only to Caucasians. I'd expect similar variability for other groups. If I could obtain this map for my sister's haplotype, I could use it to better target ads. (Well, maybe...there's a major response bias in this data. It could also be that using Myspace correlates with a specific distribution over haplotypes for some crazy reason.)
    Monday, March 15th, 2010
    10:09 pm
    I don't match
    My test results came back. I am not a complete match for my sister. We now need to check the registry to see if a better match is available. While you can do a transplant with a not-perfectly-matched donor, that sets up a risk of rejection and "graft vs. host disease."

    On that note, we now have a URL that will let me track conversions:

    Please use this URL if you decide to share pointers to the registry.

    I've been appending # markers as a crude method for determining which channel led to the URL, e.g.

    Thanks again for everyone's good wishes, consideration of signup, and so on.
    Saturday, March 13th, 2010
    7:21 pm
    HLA type data
    This page has Excel spreadsheets with HLA tissue types from the December 2007 U.S. marrow donation registry broken down by which types are most common in European-American, African-American, Hispanic, and Asian/Pacific Islander registrants. Includes marginal and joint distributions for the "A," "B," and "DRB1" types which are the most critical markers for a marrow transplant match.
    Friday, March 12th, 2010
    11:15 pm
    Thanks to everyone for your support -- it means a whole lot right now. My sister, Susan, is doing really well. We've had a scary piece of news in that her leukemia has something called the "philadelphia chromosome anomaly." This indicates an aggressive cancer and pushes bone marrow transplant as the best option. Despite this, Susan's general appearance and her lab work is fantastic.

    In an odd turn of events, the best place to do bone marrow transplants in the United States turns out to be the Fred Hutchinson Cancer Center, which is right here in Seattle. In fact, marrow transplants were invented there. The person who did the first marrow transplant, Dr. Don Thomas, turns 90 years old on 15 March.

    My sister is coming to Seattle on Sunday to check in and start the process. My parents are with her. They'll all be living roughly 2 miles from where I live, which means I'll be able to see them most days. Susan's insurance has come through and it looks like this will be covered. Susan jokes that her protest in favor of expanded health coverage last year paid off.

    We are still looking for a bone marrow donor. The hospital in New York has been slow to finish my test, so I still don't know my tissue type. I called the Fred Hutchinson Cancer Center to see if I could go ahead and test with them, now that we know she will continue treatment here. Every day we go without a donor is a day Susan needs to stay on maintenance chemotherapy. Turns out they can't test me until she is here, but they pointed me to .

    Yes, you too can order a bone marrow tissue type test over the Internet! From an Oregon firm that specializes in direct to the customer, high quality, low price, practically zero overhead genetic testing! Have I mentioned yet that we are living in the future?

    Susan's tissue type test results just came through, thankfully, so we will be ready to start pursuing other donors in case I am not a match. In "the best news all day" category, the U.S. marrow repository offers a self-service web page for performing a preliminary search by human leukocyte antigen (HLA) type:

    My sister's type shows 25 people with matches on all 6 out of 6 HLA antigens tracked by the registry, and 1530 people with 5/6 matches. While this is nowhere near the same thing as having an actual donor committed to the case -- those 25 people might all be missing, dead, mismatched on closer inspection, or otherwise unable to donate -- it's a lot better than zero.
    I am still hoping that I match, because then we'll have the best possible option to start quickly.

    Thanks also to everyone who has considered joining the registry or sent the news to friends. Please don't worry if for whatever reason you cannot or do not want to join yourself - just considering is great, telling friends is even better. Twitter has been wonderful. You can see the statistics here for people who have clicked on the link to learn more about joining. While there is a sharp dropoff in the number of clicks, it's 340+ people who have considered donating.

    I am also running Facebook ads:

    While the ads don't bring in as many clicks as Twitter, they reliably bring in 20-odd clicks per day. I don't have a way to measure conversion. Facebook ads has helpfully infomed me that they have a new product for tracking conversions, but it requires modifying the web page to load their Javascript. I have contacted the national registry to ask them for a promo code or other method for determining how many of the people who visit actually sign up.

    The currently running ad ("save a life!") is targeted specifically to Ohio. My father's side of the family is Hungarian. Turns out there are many people of Hungarian descent in Ohio, so this is a crude attempt at targeting towards people most likely to match my sister's HLA type.

    I have asked the national registry for help in better targeting these ads. Many thanks also to Henry Cohn for putting me in touch with other people who may be able to help. Even if (when!) my sister finds a match, there are many others who are not as lucky. With only 8 million people in the U.S. national registry there is a long, long way to go. Furthermore, most of those 8 million are of European descent, so if you aren't and you have leukemia, then right now you're in trouble. There has to be a way to fix this.

    Finally, for those of you in the NYC area, my sister's friends are holding a benefit in her honor on her birthday, 1 May 2010. More details to follow, but it looks like it will be at the Hell Gate Social Club in Queens from roughly 8PM - 2AM . Expect artists, musicians, and a good time.
    Saturday, February 27th, 2010
    10:45 pm
    Please consider bone marrow donation
    My sister discovered this past week that she has leukemia. We are fortunate in that she found out early, but it looks like that she may still need a bone marrow transplant.

    She needs a matching donor. As her brother, I am the most likely person to match. My testing is in progress. I won't know for a week or two if we match.

    If my sister does not match my marrow, she will need a donor who does match. In addition to my sister, there are many, many others who need donor bone marrow to treat leukemia and other diseases.

    Therefore, please consider taking a moment to sign up for bone marrow donation. The enrollment test is easy and painless: you just wipe cotton swabs against your cheek, then mail the swabs to the registry. Donating marrow itself is an outpatient procedure and said to be more or less painless -- I hope to find out how painless exactly!

    If you are in the U.S., you can learn more, then sign up for the U.S. bone marrow registry here:

    I'd welcome links to registries for other countries. Also if anyone has ideas on an ad network that allows targeting ads by human leukocyte antigen types, I want to know about it.
    Wednesday, January 6th, 2010
    12:17 am
    wait, are people submitting randomly generated papers to more conferences..?
    This popped up while searching for "dogfooding the heuristic" -- a phrase from the randomly generated hoax paper created by the SCIgen program of Stribling, Krohn, and Aguayo. (See
    There appear to be one or two more like this, from different authors. Looks like the SCIGen site may need an update to add to its list of successes...

    The Relationship Between Hierarchical Databases and the Internet Using Titi
    Liang Chen Li-fang Chen Jing-hong Fu
    Dept. of Inf. Eng., TangShan Prof. Technol. Coll., Tangshan;

    This paper appears in: Genetic and Evolutionary Computing, 2008. WGEC '08. Second International Conference on
    Publication Date: 25-26 Sept. 2008
    On page(s): 491-494
    Location: Hubei,
    ISBN: 978-0-7695-3334-6
    INSPEC Accession Number: 10251257
    Digital Object Identifier: 10.1109/WGEC.2008.98
    Current Version Published: 2008-10-03

    The implications of stable epistemologies have been far-reaching and pervasive. The synthesis of red-black trees has been validated in the paper. An atomic tool for investigating Smalltalk (Titi) was described, disconfirming that sensor networks can be made peer-to-peer, stable, and adaptive. Firstly, motivated the need for neural networks, validated the emulation of symmetric encryption. Furthermore, we prove that the well-known adaptive algorithm for the exploration of IPv4 by Sasaki et al. runs in O(n!) time.
    Friday, January 1st, 2010
    10:26 pm
    Oblivious Transfer on NUMB3RS
    Actually not all that bad an explanation of it, either. John Bethencourt, call your office...
    Thursday, December 31st, 2009
    3:01 am
    sync notes
    I have a car with Ford/Microsoft SYNC in it. A few quick things after using it since September:

    * I figured how how to stop the voice from saying "Please Say A Command" every time I press the "Voice" button. It's simple: press the button again immediately after the first press to cut off the voice. After the chime, say a command. I don't know if this is documented, but it makes a big difference.

    * SYNC will have an app store soon. Like everything else. Furthermore, an upcoming version of SYNC will let you plug in a separate wireless broadband card. So if you want to combine these with a projector to the windshield to build Death Waze 2000, the augmented reality driving game where you compete to find and run over virtual pedestrians in out of the way parts of the world, you can...but you probably should not.

    * If you ask SYNC to play a track it does not have or does not recognize exactly, it will often play a completely different song instead of telling you it couldn't find anything. Have to wonder how many focus groups liked this feature. Playing a random track, however, sometimes happens when you say "Play Track: Thorns" and should have said "Play Track: Thorns by W" (the actual title of the song).
    Wednesday, November 11th, 2009
    10:45 pm
    on the way to breaking ECC2K-130...?
    [I promise not to turn this into only a list of cryptography breaks, but ramping up at work is taking time. Not that I posted that much anyway, but I have a list of things to come back how opportunities in research labs can affect the direction of your research.]

    EDIT: The authors have not yet broken ECC2K-130. They have started a distributed attack using the methods outlined in the paper in October 2009 (see Section 9 of the paper). For up to the date information, see . I regret the confusion from an earlier version of this post. Thanks to Arjen Lenstra for the correction.

    Good luck:
    Daniel V. Bailey and Lejla Batina and Daniel J. Bernstein and Peter Birkner and Joppe W. Bos and Hsieh-Chung Chen and Chen-Mou Cheng and Gauthier Van Damme and Giacomo de Meulenaer and Luis Julian Dominguez Perez and Junfeng Fan and Tim Gueneysu and Frank Gurkaynak and Tanja Lange and Nele Mentens and Ruben Niederhagen and Christof Paar and Francesco Regazzoni and Peter Schwabe and Leif Uhsadel and Anthony Van Herrewege and Bo-Yin Yang

    Here's the abstract:
    Elliptic-curve cryptography is becoming the standard public-key primitive not only for mobile devices but also for high-security applications. Advantages are the higher cryptographic strength per bit in comparison with RSA and the higher speed in implementations. To improve understanding of the exact strength of the elliptic-curve discrete-logarithm problem, Certicom has published a series of challenges. This paper describes breaking the ECC2K-130 challenge using a parallelized version of Pollard's rho method. This is a major computation bringing together the contributions of several clusters of conventional computers, PlayStation~3 clusters, computers with powerful graphics cards and FPGAs. We also give /preseestimates for an ASIC design. In particular we present * our choice and analysis of the iteration function for the rho method; * our choice of finite field arithmetic and representation; * detailed descriptions of the implementations on a multitude of platforms: CPUs, Cells, GPUs, FPGAs, and ASICs; * details about running the attack.

    More details:
    Sunday, October 25th, 2009
    12:35 pm
    protest at academy of fine arts, vienna
    On Tuesday, October 20 2009 the Academy of Fine Arts Vienna was squatted,

    here is the statement and the demands of the occupants:Collapse )
    Monday, August 17th, 2009
    9:58 am
    We're living in the future now
    The 512-bit RSA key used for signing applications and firmware updates for the TI-83 has been factored. By some person working on his or her own. With one computer.

    From the HN comments / announcement:

    Some fun statistics:
    - The factorization took, in total, about 1745 hours, or a bit less than 73 days, of computation. (I've actually been working on this since early March; I had a couple of false starts and haven't been able to run the software continously.)
    - My CPU, for reference, is a dual-core Athlon64 at 1900 MHz.
    - The sieving database was 4.9 gigabytes and contained just over 51 million relations.
    - During the "filtering" phase, Msieve was using about 2.5 gigabytes of RAM.
    - The final processing involved finding the null space of a 5.4 million x 5.4 million matrix.

    More discussion
    Monday, July 13th, 2009
    8:53 pm
    Noisebridge 501c3 came through
    Just heard this, have not yet seen the letter (Edit: I've seen the letter, it's official): the IRS approved the application for 501c3 provisional status for Noisebridge! This means that contributions to Noisebridge will be tax deductible from here on out. Even better, they backdated the provisional status to October 2008, which means people who made charitable donations to Noisebridge back then can take deductions.

    The IRS will review Noisebridge again in a few years to see if we qualify for permanent status. This is a great step, though, because it means we can start operating as a real live 501c3 nonprofit! Has been a whole heck of a lot of work to get this far, but it seems to be paying off.

    Edit: we now have our first request to handle a matching donation from a company.
    Sunday, July 12th, 2009
    12:29 pm
    The $99 iphone as an inexpensive tracking device
    I recently helped my girlfriend move her stuff from Chicago to Oakland. The movers were scheduled to arrive at 8AM on the 5th of July, and we were stressing the day before about all the things that could go wrong with a move. We realized that if we knew where her stuff was, it'd make us feel better. This is a post about using the $99 iPhone to help us out...and about a somewhat surprising potential use of Find My iPhone.

    find my iphone-in-a-boxCollapse )
    Saturday, July 11th, 2009
    6:01 pm
    Random thought
    Have a service that takes an audio file, then recommends a relevant web page. Possibly via Mechanical Turk.

    Apply it as follows: have your iPhone listen to your current conversation, then send the audio to the service, display the relevant web page. Repeat every minute or so. (Of course you can show this on glasses but it would probably be fun even with a standard iPhone.)

    Now for more fun, is there a way to do this without revealing the content of the conversation? (Secure multiparty computation? Compiling a Mechanical Turk task into a boolean circuit is certainly a research level problem.)
    Tuesday, June 30th, 2009
    4:17 pm
    computer science research on cap and trade?
    There's a lot of attention in the economics of computer science community on auctions or other economic mechanism design, often with ads in mind. What is under way with respect to mechanism design for cap and trade of carbon emissions? These markets are being set up now, so it seems like this is a great time for research.

    For that matter, how do existing proposals for carbon cap and trade compare to the kind of mechanisms studied in, say, ACM Electronic Commerce?

    This post brought to you by the recently passed (barely!) federal greenhouse gas cap and trade bill.
    Monday, June 29th, 2009
    3:09 am
    the split screen life
    I spent a couple of hours the other day walking around my neighborhood with a jailbroken iPod Touch, ScreenSplittr, and the myvu shades. While the Touch of course only has connectivity via 802.11, I can use my phone to create a 3G-to-802.11 bridge, which works well enough as an "iphone substitute." The end result is a small 320x240 screen with connectivity in the lower field of my vision, with enough of the rest of my vision intact that I could shop at Trader Joe's, grab coffee, etc. Only walked into a wall once.

    experiences, reflectionsCollapse )

    I've ordered an iPhone off ebay to try real time maps next.
    Sunday, June 14th, 2009
    8:56 pm
    thesis checked in to CVS
    My thesis currently stands at 107 pages. The bulk of the thesis consists of these three papers:

    Next up: write an introduction!
    Wednesday, June 10th, 2009
    1:34 pm
    Seminar on reputations, self-control, and the prefrontal cortex at Duke
    Via Vincent Conitzer's announcement list. I won't be able to make it, but looks like the seminar will have interesting things to say about where reputation comes from (and by extension how to model human behavior?).

    Daniel Schunk (The Institute for Empirical Research in Economics at
    the University of Zurich) to speak on "Reputation formation,
    self-control, and the prefrontal cortex."

    June 23, 2009 ~ 11:00 a.m. ~ Erwin Mill room A103

    Reputation formation pervades human social life, and the ubiquity of
    reputation mechanisms distinguishes humans from all other living
    species. Previous studies demonstrated that reputations for being
    trustworthy and generous play a key role in cooperation among
    genetically unrelated individuals. We know little, however, about the
    neural underpinnings of this important social mechanism. Here we show
    that disruption of the right, but not the left, dorsolateral
    prefrontal cortex (DLPFC) with low-frequency repetitive transcranial
    magnetic stimulation (rTMS) diminishes subjects' ability to build a
    favorable reputation. This effect occurs even though subjects' ability
    to behave altruistically in the absence of reputation incentives
    remains intact, and even though they are still able to recognize both
    the fairness standards necessary for acquiring and the future benefits
    of a good reputation. Thus, subjects with a disrupted right DLPFC no
    longer seem to be able to resist the temptation to defect, even though
    they know that this has detrimental effects on their future Here we
    show that disruption of the right, but not the left, dorsolateral
    prefrontal cortex (DLPFC) with low-frequency repetitive transcranial
    magnetic stimulation (rTMS) diminishes subjects' ability to build a
    favorable reputation. This effect occurs even though subjects' ability
    to behave altruistically in the absence of reputation incentives
    remains intact, and even though they are still able to recognize both
    the fairness standards necessary for acquiring and the future benefits
    of a good reputation. Thus, subjects with a disrupted right DLPFC no
    longer seem to be able to resist the temptation to defect, even though
    they know that this has detrimental effects on their future
    reputation. This suggests an important dissociation between the
    knowledge about one's own best interests and the ability to act
    accordingly in social contexts. These results link findings on the
    neural underpinnings of self-control and temptation with the study of
    human social behavior, and they may help explain why reputation
    formation remains less prominent in most other species with less
    developed prefrontal cortices.

    This talk is co-sponsored by Duke's Center for Neuroeconomic Studies,
    Social Science Research Institute, and the Duke Institute for
    Brain Sciences.

    All are welcome. Please circulate this announcement widely.
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