Quantum Chaotic Thoughts: Unconditional Justice
october 2011 by cshalizi
No, no, no. I like harshing on lawyers as much as the next scientist, but actually reading the news story suggests something much more reasonable. The judge on the appeals court was not, it seems, throwing out Bayes's theorem, but rather refusing to be cowed by Bayes's theorem when the base rates and the likelihoods appearing in it are wild-ass guesses. To quote the news story Mason links to: "And so he decided that Bayes' theorem shouldn't again be used unless the underlying statistics are "firm"." This is, of course, the completely correct attitude; otherwise, the Bayesian posterior is simply without any evidential value whatsoever, and the difference between an expert stating "I'm, like, really sure" and "My posterior probability is 0.99" lies entirely in the latter's spurious precision.
law
evidence
statistics
base_rates
bayes_rule
bayesianism
accuracy_vs_precision
blogged
porter.mason
october 2011 by cshalizi
[1108.0833] Temporal statistical analysis on human article creation patterns
august 2011 by cshalizi
Sadly, in this case fitting crappy power laws to the works of Gene Stanley and Laszlo Barabasi is not an_intentional_ joke.
bad_data_analysis
heavy_tails
barabasi.albert-laszlo
stanley.h._eugene
newman.mark
su.shi
have_read
blogged
august 2011 by cshalizi
Confirmation in the Cognitive Sciences: The Problematic Case of Bayesian Models
july 2011 by cshalizi
"Bayesian models of human learning are becoming increasingly popular in cognitive science. We argue that their purported confirmation largely relies on a methodology that depends on premises that are inconsistent with the claim that people are Bayesian about learning and inference. Bayesian models in cognitive science derive their appeal from their normative claim that the modeled inference is in some sense rational. Standard accounts of the rationality of Bayesian inference imply predictions that an agent selects the option that maximizes the posterior expected utility. Experimental confirmation of the models, however, has been claimed because of groups of agents that “probability match” the posterior. Probability matching only constitutes support for the Bayesian claim if additional unobvious and untested (but testable) assumptions are invoked. The alternative strategy of weakening the underlying notion of rationality no longer distinguishes the Bayesian model uniquely."
philosophy_of_science
cognitive_science
bayesianism
kith_and_kin
have_read
re:phil-of-bayes_paper
blogged
eberhardt.frederick
danks.david
july 2011 by cshalizi
TopatoCo: "Keep Calm and Shoot Them in the Head" Print
march 2011 by cshalizi
Would it be wrong to put this up in the office, across from the student chair? (Yes, probably, but oh so tempting.)
zombies
funny:geeky
affectionate_parody
coveted
blogged
march 2011 by cshalizi
Ghosts in the Hollow on Vimeo
september 2010 by cshalizi
"Let the flowers be forgotten/ Sprinkle coal dust on my grave/ In remembrance of the UMWA"
via:?
labor
appalachia
modern_ruins
blogged
september 2010 by cshalizi
Once Upon a Time in Afghanistan... | Foreign Policy
june 2010 by cshalizi
Someone's digitizing the photos from my grandfather's book!
kith_and_kin
afghanistan
photos
via:aks
blogged
june 2010 by cshalizi
Matthew Yglesias » Sexy Teen Trend Data
june 2010 by cshalizi
"Obviously, this data I’ve cited is perhaps open to some criticisms or alternate interpretations. But Flanagan doesn’t dispute it, doesn’t cite alternate data, and doesn’t even seem to be aware of the possibility of discussing social trends in terms of evidence rather than assertion."
utter_stupidity
why_oh_why_cant_we_have_a_better_press_corps
running_dogs_of_reaction
natural_history_of_truthiness
flanagan.caitlin
yglesias.matthew
practices_relating_to_the_transmission_of_genetic_information
blogged
june 2010 by cshalizi
Phantom of Heilbronn - Wikipedia, the free encyclopedia
may 2010 by cshalizi
In which the combined police forces of Europe spend years chasing a female serial killer known only from DNA evidence, only to find that it's all down to contaminated cotton swabs from a single supplier!
Teaching note for data mining: This should make a great example of the importance of getting the data right, before worrying about the statistical processing...
via:arsyed
serial_killers
to_teach:data-mining
bad_data
DNA_testing
forensics
wtf
inference_to_latent_objects
blogged
Teaching note for data mining: This should make a great example of the importance of getting the data right, before worrying about the statistical processing...
may 2010 by cshalizi
Homophily and Contagion Are Generically Confounded in Observational Social Network Studies (Shalizi and Thomas, 2010)
re:homophily_and_confounding blogged social_networks network_data_analysis causal_inference graphical_models contagion homophily voter_model social_influence confounding identifiability self-centered re:critique_of_diffusion
april 2010 by cshalizi
re:homophily_and_confounding blogged social_networks network_data_analysis causal_inference graphical_models contagion homophily voter_model social_influence confounding identifiability self-centered re:critique_of_diffusion
april 2010 by cshalizi
[1004.3138] Statistical Analysis of Global Connectivity and Activity Distributions in Cellular Networks
april 2010 by cshalizi
"we analyze a comprehensive data set of protein-protein and transcriptional regulatory interaction networks in yeast, an E. coli metabolic network, and gene activity profiles for different metabolic states in both organisms. We show that in all cases the networks have a heavy-tailed distribution, but most of them present significant differences from a power-law model according to a stringent statistical test. Those few data sets that have a statistically significant fit with a power-law model follow other distributions equally well. Thus, while our analysis supports that both global connectivity interaction networks and activity distributions are heavy-tailed, they are not generally described by any specific distribution model, leaving space for further inferences on generative models."
have_read
biochemical_networks
heavy_tails
blogged
april 2010 by cshalizi
Language Log » The defend-your-turf area?
march 2010 by cshalizi
Watching MYL debunking tendentious appropriations of neuroscience _again_, the phrase "One must imagine Liberman happy" comes to mind...
debunking
utter_stupidity
sexist_idiocy
neuroscience
sex_differences
rats
liberman.mark
brizendine.louann
blogged
march 2010 by cshalizi
Connections From Kafka: Exposure to Meaning Threats Improves Implicit Learning of an Artificial Grammar. Travis Proulx. 2009; Psychological Science - Wiley InterScience
february 2010 by cshalizi
!!! Should I start making CSSR question its purpose in life?
experimental_psychology
existentialism
kafka
implicit_learning
grammar_induction
blogged
via:idiolect
february 2010 by cshalizi
Developmental Decomposition and the Future of Human Behavioral Ecology (Kitcher, 1990)
december 2009 by cshalizi
Warning: it turns out that his case study for his approach is the development of the incest taboo, and he's pretty free in quoting the clinical literature about how exactly the taboo gets broken. This actually has considerable redeeming intellectual value, but is still not for the squeamish and/or victimized.
evolutionary_psychology
behavioral_ecology
human_evolution
kitcher.philip
philosophy_of_science
explanation
psychology
incest
have_read
blogged
december 2009 by cshalizi
Power-Law Distributions in Empirical Data
november 2009 by cshalizi
Begun fall 2004, submitted to this journal at the end of 2007, finally appearing 2009.
self-centered
blogged
november 2009 by cshalizi
Causal Inference in Statistics: An Overview (Pearl, 2009)
september 2009 by cshalizi
Described by Uncle Judea as "A new survey paper, gently summarizing everything I know about causation (in only 43 pages)".
causality
causal_inference
statistics
pearl.judea
blogged
have_read
september 2009 by cshalizi
YouTube - Ah Pook The Destroyer
july 2009 by cshalizi
"One of those gobs of grease is our universe on its way to the floor - splat!"
burroughs.william_s.
nukes
you_stupid_greedy_vulgar_ugly_american_deathsucker
blogged
july 2009 by cshalizi
Language Log » Conditional entropy and the Indus Script
april 2009 by cshalizi
Having read the papers and re-implemented the method, I now concur with Mark: this is an methodological EPIC FAIL.
information_theory
linguistics
bad_data_analysis
bad_science_journalism
harrapan_civilization
liberman.mark
blogged
why_oh_why_cant_we_have_a_better_academic_publishing_system
april 2009 by cshalizi
Op-Ed Contributor - The Test Passes, Colleges Fail - NYTimes.com
november 2008 by cshalizi
File under: people who do not grasp the meaning of the term "controlled experiment". See also: "ecological fallacy", "massive confounding".
Update: I gave in: http://bactra.org/weblog/592.html
bad_data_analysis
academia
standardized_testing
salins.peter
via:klk
blogged
Update: I gave in: http://bactra.org/weblog/592.html
november 2008 by cshalizi
The End of Theory: The Data Deluge Makes the Scientific Method Obsolete
june 2008 by cshalizi
A profoundly - and characteristically - stupid cover story from Wired. (And I say this as someone who _works_ on nonparametric model discovery.)
anderson.chris
utter_stupidity
methodological_advice
data_mining
bad_science_journalism
the_wired_ideology
to_teach:data-mining
blogged
june 2008 by cshalizi
Shortpacked!
april 2008 by cshalizi
Frank Miller fails a test. (I liked _Ronin_, when I read it as a teenager, but otherwise, eh.)
comics
funny:malicious
miller.frank
misogyny
via:walter_jon_williams
blogged
april 2008 by cshalizi
Kit Whitfield's Blog: Macho Sue
april 2008 by cshalizi
Surprisingly, she does not mention Achilles.
literary_criticism
gender_roles
whitfield.kit
via:?
blogged
april 2008 by cshalizi
Daily Llama: telephones
february 2008 by cshalizi
Cell phones; "One needs to have a valid description of the system under consideration before any reasonable statistics can be calculated."
statistics
bad_data_analysis
blogged
february 2008 by cshalizi
A Call for Professional Attire :: Inside Higher Ed :: Jobs, News and Views for All of Higher Education
february 2008 by cshalizi
Jensen does everything except actually provide a single substantive reason for accepting his proposal.
Blogged: http://bactra.org/weblog/561.html
utter_stupidity
academia
clothes
jensen.erik
blogged
via:jbdelong
standards_of_taste
Blogged: http://bactra.org/weblog/561.html
february 2008 by cshalizi
Bob Sutton: Brilliant But Cruel
december 2007 by cshalizi
The secret of my success, such as it is.
social_psychology
cruelty
presentation_of_self
blogged
rhetorical_self-fashioning
december 2007 by cshalizi
Halfway down the Danube: Day 20: Mattavilasa blogging
november 2007 by cshalizi
"So the stereotype was of creepy horny drunk carnivorous beggars covered in human ash, accompanied by hott chick acolytes, carrying around someone's skull, asking you for money. I think they used to squat in Tompkins Square Park."
funny
india
religion
drama
sanskrit
yu.carlos
blogged
november 2007 by cshalizi
Low Road to Splitsville
october 2007 by cshalizi
On Richard Mellon Scaife's divorce. (I live in Shadyside and go by those houses every day. I guessed the "welcome home" sign was for coming back from the vet's!)
running_dogs_of_reaction
vast_right-wing_conspiracy
pittsburgh
shadyside
scaife.richard_mellon
taste:bad
funny:malicious
via:krugman
blogged
october 2007 by cshalizi
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