Browsing FAS Scholarly Articles by Title
Now showing items 5137-5156 of 18292
-
Estimating Compact Yet Rich Tree Insertion Grammars
(Association for Computational Linguistics, 2012)We present a Bayesian nonparametric model for estimating tree insertion grammars (TIG), building upon recent work in Bayesian inference of tree substitution grammars (TSG) via Dirichlet processes. Under our general variant ... -
Estimating Global Air-Sea Fluxes from Surface Properties and from Climatological Flux Data Using an Oceanic General Circulation Model
(American Geophysical Union, 1993)A simple method is presented and demonstrated for estimating air-sea fluxes of heat and fresh water with the aid of a general circulation model (GCM), using both sea surface temperature and salinity data and climatological ... -
Estimating Ground-Level PM2.5 in the Eastern United States Using Satellite Remote Sensing
(American Chemical Society, 2005)An empirical model based on the regression between daily PM2.5 (particles with aerodynamic diameters of less than 2.5 μm) concentrations and aerosol optical thickness (AOT) measurements from the multiangle imaging ... -
Estimating Incidence Curves of Several Infections Using Symptom Surveillance Data
(Public Library of Science, 2011)We introduce a method for estimating incidence curves of several co-circulating infectious pathogens, where each infection has its own probabilities of particular symptom profiles. Our deconvolution method utilizes weekly ... -
Estimating Incumbency Advantage Without Bias
(Wiley-Blackwell, 1990)In this paper we prove theoretically and demonstrate empirically that all existing measures of incumbency advantage in the congressional elections literature are biased or inconsistent. We then provide an unbiased estimator ... -
Estimating Information Value in Collaborative Multi-Agent Planning Systems
(Association for Computing Machinery, 2007)This paper addresses the problem of identifying the value of information held by a teammate on a distributed, multi-agent team. It focuses on a distributed scheduling task in which computer agents support people who are ... -
Estimating Latent Processes on a Network From Indirect Measurements
(Informa UK Limited, 2013)In a communication network, point-to-point traffic volumes over time are critical for designing protocols that route information efficiently and for maintaining security, whether at the scale of an Internet service provider ... -
Estimating North American background ozone in U.S. surface air with two independent global models: Variability, uncertainties, and recommendations
(Elsevier BV, 2014)Accurate estimates for North American background (NAB) ozone (O3) in surface air over the United States are needed for setting and implementing an attainable national O3 standard. These estimates rely on simulations with ... -
Estimating Partisan Bias of the Electoral College Under Proposed Changes in Elector Apportionment
(Walter de Gruyter, 2013)In the election for President of the United States, the Electoral College is the body whose members vote to elect the President directly. Each state sends a number of delegates equal to its total number of representatives ... -
Estimating Peer Effects on Health in Social Networks
(Elsevier, 2008)We recently showed that obesity can spread socially from person to person in adults (Christakis and Fowler 2007). A natural question to ask is whether or not these results generalize to a population of adolescents. Three ... -
Estimating phylogenetic trees from genome-scale data
(Wiley-Blackwell, 2015)The heterogeneity of signals in the genomes of diverse organisms poses challenges for traditional phylogenetic analysis. Phylogenetic methods known as “species tree” methods have been proposed to directly address one ... -
Estimating Resemblance of MIDI Documents
(2000)Search engines often employ techniques for determining syntactic similarity of web pages. Such a tool allows them to avoid returning multiple copies of essentially the same page when a user makes a query. Here we describe ... -
Estimating Risk and Rate Levels, Ratios and Differences in Case-Control Studies
(Wiley-Blackwell, 2002)Classic (or ‘cumulative’) case-control sampling designs do not admit inferences about quantities of interest other than risk ratios, and then only by making the rare events assumption. Probabilities, risk di erences and ... -
Estimating the Column Density in Molecular Clouds with Far-Infrared and Submillimeter Emission Maps
(American Astronomical Society, 2006)We have used a numerical simulation of a turbulent cloud to synthesize maps of the thermal emission from dust at a variety of far-IR and submillimeter wavelengths. The average column density and external radiation field ... -
Estimating the Electoral Consequences of Legislative Redistricting
(American Statistical Association, 1990)We analyze the effects of redistricting as revealed in the votes received by the Democratic and Republican candidates for state legislature. We develop measures of partisan bias and the responsiveness of the composition ... -
Estimating the Equity Premium
(Blackwell Publishing, 2008)Finance theory restricts the time-series behaviour of valuation ratios and links the cross-section of stock prices to the level of the equity premium. This can be used to strengthen the evidence for predictability in stock ... -
Estimating the Impact of the Hajj: Religion and Tolerance in Islam's Global Gathering
(MIT Press, 2009)We estimate the impact on pilgrims of performing the Hajj pilgrimage to Mecca. Our method compares successful and unsuccessful applicants in a lottery used by Pakistan to allocate Hajj visas. Pilgrim accounts stress that ... -
Estimating the Parameters of Sagittarius A*'s Accretion Flow Via Millimeter Vlbi
(American Astronomical Society, 2009)Recent millimeter-VLBI observations of Sagittarius A* (Sgr A*) have, for the first time, directly probed distances comparable to the horizon scale of a black hole. This provides unprecedented access to the environment ... -
Estimating the Probability of Events that Have Never Occurred: When is Your Vote Decisive?
(American Statistical Association, 1998)Researchers sometimes argue that statisticians have little to contribute when few realizations of the process being estimated are observed. We show that this argument is incorrect even in the extreme situation of estimating ... -
Estimating the Spin of Stellar-Mass Black Holes by Spectral Fitting of the X-Ray Continuum
(American Astronomical Society, 2005)We fit X-ray spectral data in the thermal-dominant, or high-soft, state of two dynamically confirmed black holes, GRO J1655-40 and 4U 1543-47, and estimate the dimensionless spin parameters a* a/M of the two holes. For ...