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pro vyhledávání: '"Choi, David S."'
Autor:
Choi, David S.
Randomized experiments on social networks pose statistical challenges, due to the possibility of interference between units. We propose new methods for estimating attributable treatment effects in such settings. The methods do not require partial int
Externí odkaz:
http://arxiv.org/abs/1408.4102
Autor:
Choi, David S.
Publikováno v:
Connect to Dissertations & Theses @ Tufts University..
Thesis (Ph.D.)--Tufts University, 2000.
Adviser: Joseph P. Noonan. Submitted to the Dept. of Electrical Engineering. Includes bibliographical references (leaves 83-87). Access restricted to members of the Tufts University community. Also availab
Adviser: Joseph P. Noonan. Submitted to the Dept. of Electrical Engineering. Includes bibliographical references (leaves 83-87). Access restricted to members of the Tufts University community. Also availab
We present an updated analysis of Jupiter's equatorial meteorology from Cassini observations. For two months preceding the spacecraft's closest approach, the Imaging Science Subsystem (ISS) onboard regularly imaged the atmosphere. We created time-lap
Externí odkaz:
http://arxiv.org/abs/1302.0277
Publikováno v:
Icarus 188 (2007) 35-46
We have produced mosaics of the Great Red Spot (GRS) using images taken by the Galileo spacecraft in May 2000, and have measured the winds of the GRS using an automated algorithm that does not require manual cloud tracking. Our technique yields a hig
Externí odkaz:
http://arxiv.org/abs/1301.6119
Autor:
Choi, David S., Showman, Adam P.
Publikováno v:
Icarus 216 (2011) 597-609
We present suggestive evidence for an inverse energy cascade within Jupiter's atmosphere through a calculation of the power spectrum of its kinetic energy and its cloud patterns. Using Cassini observations, we composed full-longitudinal mosaics of Ju
Externí odkaz:
http://arxiv.org/abs/1301.6132
Autor:
Choi, David S., Dundas, Colin M.
Publikováno v:
Geophysical Research Letters 38 (2011) L24206
We report wind measurements within Martian dust devils observed in plan view from the High Resolution Imaging Science Experiment (HiRISE) orbiting Mars. The central color swath of the HiRISE instrument has three separate charge-coupled devices (CCDs)
Externí odkaz:
http://arxiv.org/abs/1301.6130
Publikováno v:
Icarus 207 (2010) 359-372
We present results regarding the dynamical meteorology of Jupiter's White Ovals at different points in their evolution. Starting from the era with three White Ovals FA, BC, and DE (Galileo), continuing to the post-merger epoch with only one Oval BA (
Externí odkaz:
http://arxiv.org/abs/1301.6126
Publikováno v:
Journal of Geophysical Research (Planets) 114 (2009) E04007
We present an analysis of data about Saturn's atmosphere from Cassini's Visual and Infrared Mapping Spectrometer (VIMS), focusing on the meteorology of the features seen in the 5-micron spectral window. We present VIMS mosaics and discuss the morphol
Externí odkaz:
http://arxiv.org/abs/1301.6124
Publikováno v:
Statistical Analysis and Data Mining, vol. 4, pp. 461-469, 2011
Latent variable models are frequently used to identify structure in dichotomous network data, in part because they give rise to a Bernoulli product likelihood that is both well understood and consistent with the notion of exchangeable random graphs.
Externí odkaz:
http://arxiv.org/abs/1105.6245
Publikováno v:
Biometrika, 99:273--284, 2012
We present asymptotic and finite-sample results on the use of stochastic blockmodels for the analysis of network data. We show that the fraction of misclassified network nodes converges in probability to zero under maximum likelihood fitting when the
Externí odkaz:
http://arxiv.org/abs/1011.4644