人工智能、机器学习与深度学习 · 2020. 3. 8. · á a 3 hu •k 4 ¯À ¬^ ,ñ û ,ñ...
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t ≈X
tX ≈
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tX ≈
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• o k
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d e
8layers
19layers
22layers
AlexNet (2012) VGG(2014) GoogleNet (2014)
16.4%
7.3%
6.7%
http://cs231n.stanford.e
du/slides/winter1516_le
cture8.pdf
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AlexNet
(2012)
VGG
(2014)
GoogleNet
(2014)
152layers
3.57%
ResidualNet
(2015)
16.4%
7.3% 6.7%
Special
structure
162layersd e
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c %
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k 5T MZ VO
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k 5T MZ VO
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W I WV
Handclap Traffic Tidal
Sheep Flock
AnimalMobility
AnimalBehavior
Fish School
All contain patterns
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W I WV
PhysicalSpace Pattern
Space
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Z OWIT
Input:
• / I IT MU WZIT I MZV• GP KP IZMI IZM V PM IUM I IT I MZV 2 +B G• GPI MU WZIT I MZV M V Z IV ZINN K2 2• :W ZINN K WKK Z M MMV I IT I MZV P L NNMZMV MU WZITI MZV 2 28 4 B 8 88 6B G 4 7 D
Urbanbigdata
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Our Works
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I ZWIL
TaxiGPSinBeijing BeijingMap BeijingPOI
Input:
Tools:
RegularizedNon-negativeTensorDecomposition
Output:
Spatio-temporal
patterns
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AZW TMU LMN V WV
•0Z O V M VI WV 3UM MV WZ• ! ! P MTMUMV / PM ZINN K WT UM NZWU PWZ O V bWVM W P LM VI WV bWVM V P UM
ODnetwork
Tensor
AODTtensorTimeevolving
ODnetwork
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AZW TMU LMN V WV
•6MKWU W M PM MV WZ I PZMM ZWRMK WVUI Z M IVL I KWZM MV WZ
ODTtensor
Coretensor
O projectionMatrix
D projectionMatrix
T projectionMatrix
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C I IT I MZV ZWRMK WV
Urbanzones Urbancommunities
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DMU WZIT I MZV ZWRMK WV
UrbanrhythmUrbantraffic
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min
BMO TIZ bML ?WV VMOI M D KSMZ 6MKWU W WV
• 4I K D KSMZ LMKWU W WV
• 0 86 8 9G 6 B
•5PITTMVOM• FIT M V PM MV WZ MZa IZ M WVTa - VWV bMZWMTMUMV• EZ IV ZINN K I MZV PI M KTW M ZMTI WV P Z IVKWV M ! KP I A
ODTtensor OMatrix TMatrix
Coretensor DMatrix
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• WLMT Z IV KWV M IT VNWZUI WV• 3 U WV/ IZMI P U TIZ A VNWZUI WVPW TL PI M PM U TIZ Z IV Z K ZM
• 5WV Z K IZMI IZMI U TIZ a UI Z
•0 86 8 9G 6 B
min
BMO TIZ bML ?WV VMOI M D KSMZ 6MKWU W WV
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BMO TIZ bML ?WV VMOI M D KSMZ 6MKWU W WV
• ISM I MZV UWZM M TI VI TM•?WV VMOI M KWV ZI V
• = ZMO TIZ bI WV• 5WZM MV WZ/ VTa SMM ZWVO V MZIK WV
• AZWRMK WV UI Z / UISM MIKP KT MZ UWZM UMIV VON T IVLMVPIVKM V MVM
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BMO TIZ bML ?WV VMOI M D KSMZ 6MKWU W WV
• 8 VIT W RMK WV N VK WV
•: UIV UW T a IVL Z IV KWV M IZM RW V TaW U bML
Modelurban
contextual
information (POI)
Model traffic
information
Makeresults
sparse
Makeresults
non-negative
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U bI WV
•4TWKS 5WWZL VI M 6M KMV 456
•3T MZVI VO AZW UIT 9ZIL MV 3A9
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Experiments
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6I I
•4M R VO 9AC LI I• 9AC ZIRMK WZa WN %%%% 4M R VO I M ! %%- IVL %
•4M R VO ZINN K IVITa bWVM UI• +%% bWVM V PM P Z VO ZWIL V 4M R VO
•AW WV WN V MZM VO A V 4M R VO• (-%!%%% W V
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4M R VO PW KI M
ODTtensor
Coretensor
O projectionMatrix
D projectionMatrix
T projectionMatrix
Spatialpatterns
Temporalpatterns
Relations
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DMU WZIT I MZV
Morningpeak
Mid-day
Aftereveningpeak
Eveningpeak
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DMU WZIT I MZV
2008 2012
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4M R VO PW KI M
ODTtensor
Coretensor
O projectionMatrix
D projectionMatrix
T projectionMatrix
Spatialpatterns
Temporalpatterns
Relations
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C I IT I MZV
2008 2012
![Page 82: 人工智能、机器学习与深度学习 · 2020. 3. 8. · á A 3 Hu •k 4 ¯À ¬^ ,ñ û ,ñ 1PB :DVD U(Ç ,ñ•Facebook ²yÚ ãê10. S M ó10TB •BRn5(. ) ²y8. ê2. F§20001×](https://reader033.vdocuments.site/reader033/viewer/2022060909/60a36070c4ff2228bf36386b/html5/thumbnails/82.jpg)
C I IT I MZV
2008 2012
![Page 83: 人工智能、机器学习与深度学习 · 2020. 3. 8. · á A 3 Hu •k 4 ¯À ¬^ ,ñ û ,ñ 1PB :DVD U(Ç ,ñ•Facebook ²yÚ ãê10. S M ó10TB •BRn5(. ) ²y8. ê2. F§20001×](https://reader033.vdocuments.site/reader033/viewer/2022060909/60a36070c4ff2228bf36386b/html5/thumbnails/83.jpg)
C I IT I MZV
2008 2012
![Page 84: 人工智能、机器学习与深度学习 · 2020. 3. 8. · á A 3 Hu •k 4 ¯À ¬^ ,ñ û ,ñ 1PB :DVD U(Ç ,ñ•Facebook ²yÚ ãê10. S M ó10TB •BRn5(. ) ²y8. ê2. F§20001×](https://reader033.vdocuments.site/reader033/viewer/2022060909/60a36070c4ff2228bf36386b/html5/thumbnails/84.jpg)
C I IT I MZV
2008 2012
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4M R VO PW KI M
ODTtensor
Coretensor
O projectionMatrix
D projectionMatrix
T projectionMatrix
Spatialpatterns
Temporalpatterns
Relations
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5WZM MV WZ
Morning Midday
Evening Night
![Page 87: 人工智能、机器学习与深度学习 · 2020. 3. 8. · á A 3 Hu •k 4 ¯À ¬^ ,ñ û ,ñ 1PB :DVD U(Ç ,ñ•Facebook ²yÚ ãê10. S M ó10TB •BRn5(. ) ²y8. ê2. F§20001×](https://reader033.vdocuments.site/reader033/viewer/2022060909/60a36070c4ff2228bf36386b/html5/thumbnails/87.jpg)
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