Tools
Sorted by:
Try your query at:
 |
 |
 |
 |
 |
 |
Results 1 - 10
of
511
Estimating the benefits of student model improvements on a substantive scale
- In Proceedings of the 6th International Conference on Educational Data Mining
, 2013
"... Educational Data Mining researchers use various prediction metrics for model selection. Often the improvements one model makes over another, while statistically reliable, seem small. The field has been lacking a metric that informs us on how much practical impact a model improvement may have on stud ..."
Abstract
-
Cited by 4 (0 self)
- Add to MetaCart
on student learning efficiency and outcomes. We pro-pose a metric that indicates how much wasted practice can be avoided (increasing efficiency) and extra practice would be added (increasing outcomes) by using a more accurate model. We show that learning can be improved by 15-22% when using machine
Self-determination and persistence in a real-life setting: Toward a motivational model of high school dropout.
- Journal of Personality and Social Psychology,
, 1997
"... The purpose of this study was to propose and test a motivational model of high school dropout. The model posits that teachers, parents, and the school administration's behaviors toward students influence students' perceptions of competence and autonomy. The less autonomy supportive the so ..."
Abstract
-
Cited by 183 (19 self)
- Add to MetaCart
< 1, except for the parental measure, p = .03). The means and standard deviations of the social agents' autonomy support scales as a function of type of student and gender also appear in The Motivational Model of High School Dropout We tested the proposed model (see The latent constructs
File server scaling with network-attached secure disks
- In Proceedings of the 1997 ACM SIGMETRICS International Conference on Measurement and Modeling of Computer Systems
, 1997
"... By providing direct data transfer between storage and client, net-work-attached storage devices have the potential to improve scal-ability for existing distributed file systems (by removing the server as a bottleneck) and bandwidth for new parallel and distributed file systems (through network strip ..."
Abstract
-
Cited by 144 (15 self)
- Add to MetaCart
to drive object services. To estimate the potential performance benefits of these architectures, we develop an analytic model and perform trace-driven replay experiments based on AFS and NFS traces. Our results suggest that NetSCSI can reduce tile server load during a burst of NFS or AFS activity by about
ABSTRACT ESTIMATING THE BENEFITS FROM IMPROVED MARKET INFORMATION By
, 2009
"... Using a partial equilibrium model, the benefits of providing improved agricultural market information to farmers and small-scale traders of maize, millet, sorghum and paddy rice in Mali are estimated. The value of information is estimated as the reduction in dead-weight loss when farmers and small-s ..."
Abstract
- Add to MetaCart
Using a partial equilibrium model, the benefits of providing improved agricultural market information to farmers and small-scale traders of maize, millet, sorghum and paddy rice in Mali are estimated. The value of information is estimated as the reduction in dead-weight loss when farmers and small-scale
Whom You Know Matters: Venture Capital Networks and Investment Performance,
- Journal of Finance
, 2007
"... Abstract Many financial markets are characterized by strong relationships and networks, rather than arm's-length, spot-market transactions. We examine the performance consequences of this organizational choice in the context of relationships established when VCs syndicate portfolio company inv ..."
Abstract
-
Cited by 138 (8 self)
- Add to MetaCart
with diminishing returns to scale. The adjusted R 2 in model (3) is 13.6%. Because fund sequence number appears to have little effect on fund performance in our dataset, and because it is frequently unavailable in the Venture Economics database, we replace it with a dummy equaling one for first-time funds. We also
Longer-term effects of Head Start
- American Economic Review
, 2002
"... Abstract Public early intervention programs like Head Start are often justified as investments in children. Yet nothing is known about the long-term effects of Head Start. This paper draws on unique data from the Panel Study of Income Dynamics to provide new evidence on the effects of Head Start on ..."
Abstract
-
Cited by 131 (5 self)
- Add to MetaCart
,000 children, and serves as a model for separate state-funded programs. Head Start is often justified as an investment in children. However, critics point out that there is no evidence that the program has lasting benefits. Evidence cited in support of the long-term effectiveness of early intervention comes
The Benefits of Environmental Improvement: Estimates From Space-time Analysis
, 2010
"... This paper develops estimates of environmental improvement based on a two-stage hedonic price analysis of the single family housing market in the Puget Sound region of Washington State. The analysis — which focuses specifically on several EPA-designated environmental hazards and involves 226,918 tra ..."
Abstract
- Add to MetaCart
to those obtained in other research and then used evaluate the potential scale of benefits associated with some basic environmental improvement scenarios. Overall, the analysis provides further evidence that it is possible to develop a structural model of implicit demand within a single housing market
Joint support recovery under high-dimensional scaling: Benefits and perils of ℓ1,∞-regularization
"... Given a collection of r ≥ 2 linear regression problems in p dimensions, suppose that the regression coefficients share partially common supports. This set-up suggests the use of ℓ1/ℓ∞-regularized regression for joint estimation of the p × r matrix of regression coefficients. We analyze the high-dime ..."
Abstract
-
Cited by 32 (1 self)
- Add to MetaCart
-dimensional scaling of ℓ1/ℓ∞-regularized quadratic programming, considering both consistency rates in ℓ∞-norm, and also how the minimal sample size n required for performing variable selection grows as a function of the model dimension, sparsity, and overlap between the supports. We begin by establishing bounds
Weak Complementarity and Ecosystem Benefits Estimation: Soil Conservation in Flores, Indonesia by
"... We illustrate a strategy for valuation of forest ecosystem services by studying the demand for its weak complement, agricultural labor –a commodity that has market prices. In our case study forest protection in Ruteng Park of Flores, Indonesia, provides soil conservation benefits to farmers living n ..."
Abstract
- Add to MetaCart
near the protected area. Econometric analyses of forest hydrology and household data shows that soil erosion is a weak complement to agricultural labor demand. Based on estimated coefficients of the model, we find that 10 to 30 percent decrease in soil erosion can enhance agricultural profitability
Party over Policy: The Dominating Impact of Group Influence
- on Political Beliefs.’’ Journal of Personality and Social Psychology
, 2003
"... Four studies demonstrated both the power of group influence in persuasion and people's blindness to it. Even under conditions of effortful processing, attitudes toward a social policy depended almost exclusively upon the stated position of one's political party. This effect overwhelmed th ..."
Abstract
-
Cited by 86 (7 self)
- Add to MetaCart
much they had been influenced by the position of their party. Study 1 Liberal and conservative college students were presented with one of two versions of a welfare policy. One version provided generous benefits, whereas the other version provided stringent benefits. Informal pilot testing confirmed
Results 1 - 10
of
511
