jwh + math   192

Mechanism design
"... field in game theory studying solution concepts for a class of private information games..."
math  auction  game 
june 2011 by jwh
Center of mass - (wkpdia article)
"The center of mass \mathbf{R} of a system of particles is defined as the average of their positions, \mathbf{r}_i, weighted by their masses, mi:"
math  distance  metric  cluster 
april 2010 by jwh
Mahalanobis distance - (wkpdia article)
"It differs from Euclidean distance in that it takes into account the correlations of the data set and is scale-invariant..."
math  distance  metric 
april 2010 by jwh
Dempster–Shafer theory - (wkpdia article)
"The Dempster–Shafer theory (sometimes abbreviated to DST) is a mathematical theory of evidence[1]. It allows to combine evidence from different sources and arrive at a degree of belief (represented by a belief function) that takes into account all the available evidence."
belief  network  aggregation  math 
january 2010 by jwh
Kendall tau distance - (wkpdia article)
"...metric that counts the number of pairwise disagreements between two lists. The larger the distance, the more dissimilar the two lists are."
statistics  list  metric  distance  math 
november 2009 by jwh
[0804.2288] Parimutuel Betting on Permutations - 2008
"We focus on a permutation betting market under parimutuel call auction model where traders bet on the final ranking of n candidates. We present a Proportional Betting mechanism for this market. Our mechanism allows the traders to bet on any subset of the n x n 'candidate-rank' pairs, and rewards them proportionally to the number of pairs that appear in the final outcome."
math  theory  combinatorics  markets 
november 2009 by jwh
Learning with Orderings
"A general and effective way to handle ordered sets of items is to assign each item a score computed from its features. Scoring effectively maps the items onto the real line or another Euclidean space, where standard learning algorithms and other operations apply. While this approach has often worked, we believe that much can be gained by directly building statistical models and learning algorithms on the discrete combinatorial spaces themselves. It is to forward this direction of research that we propose this workshop. " - workshop, heavy
math  ranking  uhh  whoa  machinelearning  statistics  conference  workshop 
november 2009 by jwh
Analysis of N -card Le Her - 2002
"Abstract. We present a complete solution to a card game with historical origins. Our analysis exploits convexity properties in the payoff matrix, allowing this discrete game to be resolved by continuous methods."
analysis  math  game_theory  matrix  person  research  history  filetype:pdf  media:document 
june 2009 by jwh
Foundations of electronic Marketplaces
Sandholm course syllabus with links to foundational papers
design  toread  course  _g  negotiation  onlinecourse  paper  research  person  university  math 
june 2009 by jwh
Conditional expectation - (wkpdia article)
"In probability theory, a conditional expectation (also known as conditional expected value or conditional mean) is the expected value of a real random variable with respect to a conditional probability distribution."
math  _g  probability 
june 2009 by jwh
Voronoi diagram - (wkpdia article)
"In the simplest case, we are given a set of points S in the plane, which are the Voronoi sites. Each site s has a Voronoi cell, also called a Dirichlet cell, V(s) consisting of all points closer to s than to any other site. The segments of the Voronoi diagram are all the points in the plane that are equidistant to two sites. The Voronoi nodes are the points equidistant to three (or more) sites."
visualization  tessellation  math  2d 
april 2009 by jwh
CS171 Visualization ( online course )
thoughtful and extensive course from Harvard
math  data  statistics  learning  visualization 
march 2009 by jwh
Graph Theory - Diestel - 2005 - (433page PDF)
"...contains all the standard basic material to be taught in a first undergraduate course, complete with detailed proofs and numerous illustrations."
book  graph  theory  math  pdf  toread  filetype:pdf  media:document 
february 2009 by jwh
Hypergraph - (wpdia article)
"...a generalization of a graph, where edges can connect any number of vertices."
math  path  navigation  history  browser  interface  datastructure  data 
february 2009 by jwh
Graph (mathematics) - (wkpdia article)
"In mathematics a graph is an abstract representation of a set of objects where some pairs of the objects are connected by links."
reference  math  graph  visualization  adjacency  interface 
february 2009 by jwh
Generalized Mediant
"A fraction is an ordered pair of real numbers, whereas a ratio is a single real number."
math  reference 
december 2008 by jwh
The Interpretation of Interaction in Contingency Tables E. H. Simpson - 1951
.pdf - original description of Simpson's paradox - "A common example of the paradox involves batting averages in baseball: it is possible for one player to hit for a higher batting average than another player during a given year, and to do so again during the next year, but to have a lower batting average when the two years are combined."
math  statistics  filetype:pdf  media:document 
december 2008 by jwh
Inductive inference - (math wkpdia article)
"Given a class S of computable functions, is there a learner (that is, recursive functional) which outputs for any input of the form (f(0),f(1),...,f(n)) a hypothesis. A learner M learns a function f if almost all hypotheses are the same index e of f with respect to a previously agreed on acceptable numbering of all computable functions; M learns S if M learns every f in S. Basic results are that all recursively enumerable classes of functions are learnable while the class REC of all computable functions is not learnable."
math  theory  person  1960 
september 2008 by jwh
Parallel coordinates - (wkpdia page)
description of high dimension visualization method
visualization  math  graph  graphics 
august 2008 by jwh
Jaccard similarity coefficient - (wkpdia article)
similarity using overlapping occurrences not absences
attributes  binary  math 
may 2008 by jwh
Computing Optimal Attribute Weight Settings for Nearest NeighborAlgorithms - 1997
2d sample of 1 nearest neighbor weight calc with review of prior weight calc methods (.pdf)
math  mathematics  filetype:pdf  media:document 
may 2008 by jwh
Distance - (wkpdia article)
"...the Minkowski distance of order p (p-norm distance) is defined as:"
math  mathematics  distance 
may 2008 by jwh
Talking About a Revolution - By Paul Krugman
reflection on Kevin Lancaster contributions-"useful theorizing...is always a matter of choosing the right strategic simplification...it seemed that the clarity of constant-returns/perfect-competition analysis justified its violence to reality."
statistics  economics  math  mathematics  hedonic  pricing  auction 
may 2008 by jwh
Hedonic regression - (wkpdia article)
"...method of estimating demand or value. It decomposes the item being researched into its constituent characteristics, and obtains estimates of the contributory value of each characteristic."
economics  mathematics  regression  model  math  reference 
may 2008 by jwh
Investigating Overbidders in Online Art Auctions Using a Bilinear Mixed Model - SRINIVAS K. REDDY et al 2007
"...demonstrate an application of a bilinear mixed model for a complex human behavior such as overbidding in auctions..." last download link works
auction  math  social  mathematics  research  recent 
may 2008 by jwh
The random Tukey depth - J.A. Cuesta-Albertos and A. Nieto-Reyes - Feb 2008
"...computation of the Tukey depth, also called halfspace depth, is very demanding, even in low dimensional spaces, because it requires the consideration of all possible one-dimensional projections..."
pdf  paper  research  math  mathematics  statistics  person  tukey 
april 2008 by jwh
Lawrence Philips' Metaphone Algorithm
"Lawrence Philips' Metaphone Algorithm is an algorithm which returns the rough approximation of how an English word sounds."
algorithm  language  programming  reference  string  audio  phonetics  linquistics  person  math 
april 2008 by jwh
The R-Perl Interface
"...interface for calling R from Perl and Perl from R..."
language  perl  math  r  software  statistics  tool  interface 
march 2008 by jwh
George E. P. Box - (wkpdia article)
"...pioneer in the areas of quality control, time series analysis, design of experiments and Bayesian inference."
statistics  probability  math  person  research 
march 2008 by jwh
e-EDGE Web Edition
public global economy analysis by Los Angeles County Economic Development Corporation
analysis  public  forecasting  math  data  statistics  economics 
february 2008 by jwh
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