The user specifies a list of integers, and ingap inserts gap observations next to the observations in the corresponding positions in the data set, or in the corresponding positions in each by-group if by-variables are specified. ingap assumes that the data set in memory has up to 3 classes...
aWhen the data matrix x is defined on a set I of objects (rows, observations) and a set J of variables (columns, attributes), di erent clustering approaches are used and most algorithms are proposed considering the both sets separately.Among the algorithms commonly used, we can cite the ...
Using a novel set of data collection tools, techniques and methodologies, we were able to record precise data on the face-to-face interaction networks, ... L Wu,BN Waber,S Aral,... - 《Social Science Electronic Publishing》 被引量: 161发表: 2008年 Narratives in interview — The case of...
Thus a combination of InSAR with additional geodetic methods or a precise geodynamic model is inevitable to obtain the full displacement vector. We use leveling data in combination with TerraSAR-X persistent scatterer stacks observed in ascending and descending mode to retrieve the full surface ...
aThe data consists of monthly observations of gold, both cash and futures prices, and a set of macroeconomic variables, over the 1984–2003 period. 数据包括金子的月度观察,现金和未来价格和一套宏观经济学可变物,经过1984-2003期间。[translate]
The present study investigated whether monetary resources invested in a video-based posture observation study should preferably be spent in collecting many video recordings of the work and have them observed once by one observer, or in having multiple observers rate postures repeatedly from fewer ...
Long data set of altimetric measurements is available for the Black Sea as the result of Pathfinder Project of Goddard Space Flight Center. Strong seasonal signal obviously presented in the satellite altimetry data Satellite-derived signal reproduces well amplitudes and phases of the sea level variabi...
aIn light of these observations, we set out to re-examine Borenstein and Rose’s ndings by using more complete data on airline prices. 根据这些观察,我们下决心通过使用关于航空公司价格的更加完全的数据再检查Borenstein和罗斯的ndings。[translate]...
This paper describes a new data set from the Aeronomy of Ice in the Mesosphere (AIM) Cloud Imaging and Particle Size (CIPS) instrument, from which gravity waves (GWs) at an altitude of 50-55 km can be inferred. CIPS is sensitive to GWs with horizontal wavelengths from ~15-600 km and...
Forecasting all components in complex systems is an open and challenging task, possibly due to high dimensionality and undesirable predictors. We bridge this gap by proposing a data-driven and model-free framework, namely, feature-and-reconstructed manif