Results 261 to 270 of about 1,014,369 (305)

Feature selection with effective distance

Neurocomputing, 2016
Abstract As more features are introduced in pattern recognition and machine learning applications, feature selection remains a critically important task to find the most compact representation of data, especially in unsupervised learning scenarios without enough class labels.
Mingxia Liu, Daoqiang Zhang
exaly   +2 more sources

Sectoral Effects of Social Distancing

AEA Papers and Proceedings, 2020
The outbreak of the COVID-19 virus has led many states to take the drastic measures of social distancing. Using US executive order, occupation, and survey data, we measure the fall in labor supply due to these measures. Starting from a model of production networks, we analyze the sectoral effects of these labor shocks for the United States.
Barrot, Jean-Noël, Grassi, Basile, Sauvagnat, Julien   +2 more
openaire   +2 more sources

The effect of spatial distance on numerical distance processing

Quarterly Journal of Experimental Psychology
The close relationship between numerical and spatial representation has been widely studied. However, little is known regarding the influence of spatial distance on the processing of numerical distance. The purpose of this study was to examine this relationship by employing a modified numerical Stroop task, in which the spatial distance was either ...
Ido Shichel, Liat Goldfarb
openaire   +2 more sources

Casimir effect at macroscopic distances

Physical Review A, 1993
The possibility of observing the Casimir force at macroscopic distances (a few centimeters) using a confocal optical resonator is discussed and a possible experimental apparatus is also ...
openaire   +3 more sources

Effect of Distance on Heterochromatic Matching

Perceptual and Motor Skills, 1980
The brightness of colors in a number of paintings by Francis Pratt appeared to vary as a function of the viewing distance. These pictures were composed of narrow strips of different colors varying in brightness and saturation. Five experiments were undertaken to replicate and study this effect under controlled conditions using heterochromatic ...
F, Pratt, R R, MacDonald
openaire   +2 more sources

Effects of Distance on Vocal Intensity

Journal of Speech, Language, and Hearing Research, 1995
The vocal response of speakers to change of distance from a listener is in dispute. Warren (1968) found that speakers obeyed the inverse square law when compensating for distance changes; that is, they decreased their vocal intensity by 6 dB when distance was halved.
D D, Michael, G M, Siegel, H L, Pick
openaire   +2 more sources

Effects of psychological distance on attraction effect

The Journal of Social Psychology, 2018
The present study demonstrated that psychological distance influences the attraction effect by changing the weights of the attributes of options. Construal level theory proposes that the weight of a superordinate attribute increases with psychological distance, whereas the weight of a subordinate attribute decreases with psychological distance.
openaire   +2 more sources

Boundary Distance Effects on Overshooting

Journal of Motor Behavior, 1976
Experiments with a subject-paced pursuit tracking task show that overshoot rate is dependent upon the distance between the target and the display boundary measured in the direction of movement, and that a previously noted inverse relationship with distance to the target is artifactual.
openaire   +2 more sources

Are Distance Effects Really a Puzzle

SSRN Electronic Journal, 2009
In this paper, I use gravity equation with all the possible controls and a large bilateral panel data over 50 years and more than175 countries to estimate the distance effect from 1950 to 1999. An extensive search reveals some new results: different from previous finding that distance effects rose around the middle of the 20th century, distances ...
openaire   +1 more source