Results 1 - 10 of 50,131

A Heteroskedasticity-Consistent Covariance Matrix Estimator And A Direct Test For Heteroskedasticity

by Halbert White , 1980
"... This paper presents a parameter covariance matrix estimator which is consistent even when the disturbances of a linear regression model are heteroskedastic. This estimator does not depend on a formal model of the structure of the heteroskedasticity. By comparing the elements of the new estimator ..."
Abstract - Cited by 3211 (5 self) - Add to MetaCart
to those of the usual covariance estimator, one obtains a direct test for heteroskedasticity, since in the absence of heteroskedasticity, the two estimators will be approximately equal, but will generally diverge otherwise. The test has an appealing least squares interpretation

The Strength of Weak Ties: A Network Theory Revisited

by Mark Granovetter - Sociological Theory , 1982
"... In this chapter I review empirical studies directly testing the ..."
Abstract - Cited by 903 (2 self) - Add to MetaCart
In this chapter I review empirical studies directly testing the

DART: Directed automated random testing

by Patrice Godefroid, Nils Klarlund, Koushik Sen - In Programming Language Design and Implementation (PLDI , 2005
"... We present a new tool, named DART, for automatically testing software that combines three main techniques: (1) automated extraction of the interface of a program with its external environment using static source-code parsing; (2) automatic generation of a test driver for this interface that performs ..."
Abstract - Cited by 843 (42 self) - Add to MetaCart
that performs random testing to simulate the most general environment the program can operate in; and (3) dynamic analysis of how the program behaves under random testing and automatic generation of new test inputs to direct systematically the execution along alternative program paths. Together, these three

Directional tests

by Nancy Reid, Don Fraser, Nicola Sartori, Anthony Davison, A Symposium, Jack Kalbfleisch
"... Directional tests A Symposium in Honor of Jack KalbfleischParametric models and likelihood ◮ model f (y; θ), θ ∈ Rp ◮ data y = (y1,..., yn) independent observations ◮ log-likelihood function ℓ(θ; y) = log f (y; θ) ◮ parameter of interest θ = (ψ, λ), ψ ∈ Rd ◮ likelihood inference w(ψ) = 2{ℓ ( ˆψ, ˆ ..."
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Directional tests A Symposium in Honor of Jack KalbfleischParametric models and likelihood ◮ model f (y; θ), θ ∈ Rp ◮ data y = (y1,..., yn) independent observations ◮ log-likelihood function ℓ(θ; y) = log f (y; θ) ◮ parameter of interest θ = (ψ, λ), ψ ∈ Rd ◮ likelihood inference w(ψ) = 2{ℓ ( ˆψ

Critical values for cointegration tests

by James G. Mackinnon, James G. Mackinnon - Eds.), Long-Run Economic Relationship: Readings in Cointegration , 1991
"... This paper provides tables of critical values for some popular tests of cointegration and unit roots. Although these tables are necessarily based on computer simulations, they are much more accurate than those previously available. The results of the simulation experiments are summarized by means of ..."
Abstract - Cited by 506 (3 self) - Add to MetaCart
This paper provides tables of critical values for some popular tests of cointegration and unit roots. Although these tables are necessarily based on computer simulations, they are much more accurate than those previously available. The results of the simulation experiments are summarized by means

A direct approach to false discovery rates

by John D. Storey , 2002
"... Summary. Multiple-hypothesis testing involves guarding against much more complicated errors than single-hypothesis testing. Whereas we typically control the type I error rate for a single-hypothesis test, a compound error rate is controlled for multiple-hypothesis tests. For example, controlling the ..."
Abstract - Cited by 775 (14 self) - Add to MetaCart
Summary. Multiple-hypothesis testing involves guarding against much more complicated errors than single-hypothesis testing. Whereas we typically control the type I error rate for a single-hypothesis test, a compound error rate is controlled for multiple-hypothesis tests. For example, controlling

Understanding Social Preferences with Simple Tests

by Gary Charness, Matthew Rabin , 2001
"... Departures from self-interest in economic experiments have recently inspired models of “social preferences”. We design a range of simple experimental games that test these theories more directly than existing experiments. Our experiments show that subjects are more concerned with increasing social w ..."
Abstract - Cited by 883 (41 self) - Add to MetaCart
Departures from self-interest in economic experiments have recently inspired models of “social preferences”. We design a range of simple experimental games that test these theories more directly than existing experiments. Our experiments show that subjects are more concerned with increasing social

Approximate Statistical Tests for Comparing Supervised Classification Learning Algorithms

by Thomas G. Dietterich , 1998
"... This article reviews five approximate statistical tests for determining whether one learning algorithm outperforms another on a particular learning task. These tests are compared experimentally to determine their probability of incorrectly detecting a difference when no difference exists (type I err ..."
Abstract - Cited by 723 (8 self) - Add to MetaCart
by the computational cost of running the learning algorithm. For algorithms that can be executed only once, Mc-Nemar’s test is the only test with acceptable type I error. For algorithms that can be executed 10 times, the 5×2 cv test is recommended, because it is slightly more powerful and because it directly measures

Do Domestic Firms Benefit from Direct Foreign Investment? Evidence from Venezuela

by Brian J. Aitken, Ann E. Harrison - AMERICAN ECONOMIC REVIEW , 1999
"... Governments often promote inward foreign investment to encourage technology “spillovers” from foreign to domestic firms. Using panel data on Venezuelan plants, we find that foreign equity participation is positively correlated with plant produc-tivity (the “own-plant” effect), but this relationship ..."
Abstract - Cited by 757 (5 self) - Add to MetaCart
is only robust for small enter-prises. We then test for spillovers from joint ventures to plants with no foreign investment. Foreign investment negatively affects the productivity of domestically owned plants. The net impact of foreign investment, taking into account these two offsetting effects, is quite

Motivation through the Design of Work: Test of a Theory. Organizational Behavior and Human Performance,

by ] Richard Hackman , Grec R Oldham , 1976
"... A model is proposed that specifies the conditions under which individuals will become internally motivated to perform effectively on their jobs. The model focuses on the interaction among three classes of variables: (a) the psychological states of employees that must be present for internally motiv ..."
Abstract - Cited by 622 (2 self) - Add to MetaCart
motivated work behavior to develop; (b) the characteristics of jobs that can create these psychological states; and (c) the attributes of individuals that determine how positively a person will respond to a complex and challenging job. The model was tested for 658 employees who work on 62 different jobs
Results 1 - 10 of 50,131