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Lead-lag analysis via sparse co-projection in correlated text streams
2013
Proceedings of the 22nd ACM international conference on Conference on information & knowledge management - CIKM '13
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To detect the correlation, we use a projection vector to project two text streams onto the same space, and then use a least square cost function to regress one text stream over the other with different ...
time lags. ...
SPARSE CO-PROJECTION In this section, we introduce in detail our algorithm for analyzing the correlation between text streams. ...
doi:10.1145/2505515.2505554
dblp:conf/cikm/WuSLHL13
fatcat:jcvbcyjwijbrtar6nvnbfsxlcu
Identifying Predictive Causal Factors from News Streams
2019
Proceedings of the 2019 Conference on Empirical Methods in Natural Language Processing and the 9th International Joint Conference on Natural Language Processing (EMNLP-IJCNLP)
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We present the Predictive Causal Graph (PCG) which allows to detect latent relationships between events mentioned in news streams. ...
We show that PCG can be used to extract latent features from news streams, outperforming other graph-based methods in prediction error of 10 stock price time series for 12 months. ...
text streams. ...
doi:10.18653/v1/d19-1238
dblp:conf/emnlp/BalashankarCFS19
fatcat:ikngmp3uzzhmrg77t6lau5ebxi
Climate impacts on multidecadal pCO2 variability in the North Atlantic: 1948–2009
2016
Biogeosciences
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<i>p</i>CO<sub>2</sub> in the subpolar gyre. ...
Positive AMO is also associated with a significant reduction in dissolved inorganic carbon (DIC) in the subpolar gyre, due primarily to reduced vertical mixing; the net impact of positive AMO is to reduce ...
In our simulation, the NAO and MOC are significantly correlated (r = 0.57, Table S1 ) and there is also a high correlation (r = 0.86) between the NAO (Fig. S3 ) and the 15-year-lagged AMO. ...
doi:10.5194/bg-13-3387-2016
fatcat:emxuu53t2fcezckdkxzwr6t3q4
Recovery of a mining-damaged stream ecosystem
2015
Elementa: Science of the Anthropocene
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This paper presents a 30+ year record of changes in benthic macroinvertebrate communities and fish populations associated with improving water quality in mining-influenced streams. ...
(Co) into tributaries. ...
affected streams, ecological assumptions, interpretations of chemical guidelines and project-specific goals in Text S2. ...
doi:10.12952/journal.elementa.000042
fatcat:kqicqreelne5zce4l7napceug4
Arctic cryosphere and Milankovitch forcing of Great Basin paleoclimate
2017
Scientific Reports
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Here we show -by a detailed phasing analysis of a well-dated stalagmite δ 18 O time series -that Great Basin paleoclimate is linearly related to, but lagged, the 23,000 yr precession cycle in northern ...
The orbital paradigm suggests that Northern Hemisphere Summer Insolation on June 21 at 65°N latitude (hereafter NHSI) controls global climate via variations in ice sheet extent, which in turn exert responses ...
Author Contributions M.S.L. wrote the manuscript, devised and completed statistical analyses, completed stable isotope analyses, and completed field work; Y.A. contributed to manuscript content and analysis ...
doi:10.1038/s41598-017-13279-2
pmid:29021632
pmcid:PMC5636905
fatcat:arfc4caiyfarfmus7yaa724zde
Moment-by-moment tracking of naturalistic learning and its underlying hippocampo-cortical interactions
[article]
2020
bioRxiv
pre-print
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In auditory processing regions we demonstrate the rapid reinstatement of upcoming information after a single exposure; this neural measure of predictive recall correlates with behavioral measures of event ...
In patients undergoing electrocorticographic recordings, we then track mnemonic information in high frequency activity (70 – 200 Hz) as patients listen to a story twice. ...
peak at −1290ms (see Supplementary Information for a fine 9 grained analysis via cross correlation); note that this negative lag is expected because a behavioral response 10 can only happen after an ...
doi:10.1101/2020.12.09.416438
fatcat:vrpndkkwgvfhlbxazdj7m37yjq
Seasonal to multidecadal variability of the width of the tropical belt
2013
Journal of Geophysical Research - Atmospheres
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is a great deal of uncertainty in ...
SEASONAL TO MULTI-DECADAL VARIABILITY OF THE WIDTH OF THE TROPICAL BELT An expansion of the tropical belt has been extensively reported in observations, reanalyses, and climate model simulations, but there ...
As such, we will exclude CHAMP from our statistical analysis as its coverage is too sparse. ...
doi:10.1002/jgrd.50610
fatcat:e3omldqlujhrdisycf3i7al3fa
A Tutorial on Auditory Attention Identification Methods
2019
Frontiers in Neuroscience
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For example, canonical correlation analysis (CCA) finds a linear subset of electrophysiological data that best correlates to audio data and a similar subset of audio data that best correlates to electrophysiological ...
We focus on (1) correlation-based approaches (CCA), (2) encoding/decoding models based on dense estimation, and (3) (adaptive) encoding/decoding models based on sparse estimation. ...
FUNDING This work was supported in part by a research grant from the Oticon Foundation. ...
doi:10.3389/fnins.2019.00153
pmid:30941002
pmcid:PMC6434370
fatcat:lhg443ebyrgwlpmrcj4q3xo2ry
Simulated decadal oscillations of the Atlantic meridional overturning circulation in a cold climate state
2009
Climate Dynamics
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The latter induces a positive feedback via synoptic eddy activity in the atmosphere. ...
The analysis suggests an interaction between the NAO and an anomalous subpolar gyre circulation in which sea ice near and south of the Labrador Sea plays an important role in generating a large local thermal ...
This work is supported by the National Centre of Competence in Research (NCCR) Climate funded by the Swiss National Science Foundation and the EU project EPICA MIS. ...
doi:10.1007/s00382-009-0540-9
fatcat:obujyklddzhchmiiihztmafbrm
Mechanisms of Internal Atlantic Multidecadal Variability in HadGEM3-GC3.1 at Two Different Resolutions
2021
Journal of Climate
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This study broadly characterises and compares the key processes governing internal AMV in two resolutions of HadGEM3-GC3.1: N216ORCA025, corresponding to ~ 60km in the atmosphere and 0.25° in the ocean ...
In N216, the NAO is the dominant driver, while upper-ocean salinity-controlled density anomalies that originate from the Arctic appear to be the dominant driver in N96. ...
Unfortunately, observations remain too sparse and short for in-depth analysis to settle this debate. ...
doi:10.1175/jcli-d-21-0281.1
fatcat:a7dsceijcbfdzphazae5wg3s2i
Climatic dipoles drive two principal modes of North American boreal bird irruption
2015
Proceedings of the National Academy of Sciences of the United States of America
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correlated with climate variability. ...
Here, analysis of more than 2 million Pine Siskin observations from Project FeederWatch, a citizen science program, reveals two principal irruption modes (North-South and West-East), both of which are ...
FeederWatch Leading Modes. The modes of Pine Siskin count variability were objectively determined by performing EOF analysis (55) . ...
doi:10.1073/pnas.1418414112
pmid:25964328
pmcid:PMC4450426
fatcat:57xo36ub55cndhyke6vggvncl4
VisemeNet: Audio-Driven Animator-Centric Speech Animation
[article]
2018
arXiv
pre-print
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; speech styles like mumbling or shouting are strongly co-related to the motion of facial landmarks; and animator style is encoded in viseme motion curve profiles. ...
Our three-stage Long Short-Term Memory (LSTM) network architecture is motivated by psycho-linguistic insights: segmenting speech audio into a stream of phonetic-groups is sufficient for viseme construction ...
Our experiments were performed in the UMass GPU cluster obtained under the Collaborative R&D Fund managed by the Massachusetts Technology Collaborative. ...
arXiv:1805.09488v1
fatcat:ahgmxkuawjg7hguwc37rs5lezy
Mechanism of Interannual to Decadal Variability of the North Atlantic Circulation
2001
Journal of Climate
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the subtropics due to changes in Ekman transport. ...
The delayed response is an increase in subpolar heat transport due to enhanced meridional overturning and due to a spinup of the subpolar gyre. ...
At the same time the ocean gains anomalous heat in the Gulf stream region. The temporal correlation of both EOF modes is 0.71 (Fig. 5a) . ...
doi:10.1175/1520-0442(2001)014<2266:moitdv>2.0.co;2
fatcat:nfymo7a7jra3zjjmy5d6szo27y
3D for the people: multi-camera motion capture in the field with consumer-grade cameras and open source software
2016
Biology Open
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Ecological, behavioral and biomechanical studies often need to quantify animal movement and behavior in three dimensions. ...
In laboratory studies, a common tool to accomplish these measurements is the use of multiple, calibrated high-speed cameras. ...
The cross-correlation operations are performed within Argus Sync and processed automatically; results are saved in a user-specified text file. ...
doi:10.1242/bio.018713
pmid:27444791
pmcid:PMC5051647
fatcat:hqmbs42xsjfk3azhbfi3si2w7q
Sparse Learning for Variable Selection with Structures and Nonlinearities
[article]
2019
arXiv
pre-print
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In this thesis we discuss machine learning methods performing automated variable selection for learning sparse predictive models. ...
There are multiple reasons for promoting sparsity in the predictive models. ...
The empirical results correspond to the theoretical complexity analysis of section 3.2 in the main text. ...
arXiv:1903.10978v1
fatcat:crfq5vy2qfaa5pnco2gowbi2rq
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