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| 1 | Social media as passive geo-participation in transportation planning-how effective are topic modeling&sentiment analysis in comparison with citizen surveys?显示文摘We live in an era of rapid urbanization as many cities are experiencing an unprecedented rate of population growth and congestion.Public transport is playing an increasingly important role in urban mobility with a need to move people and goods efficiently around the city.With such pressures on existing public transportation systems,this paper investigates the opportunities to use social media to more effectively engage with citizens and customers using such services.This research forms a case study of the use of passively collected forms of big data in cities-focusing on Sydney,Australia.Firstly,it examines social media data(Tweets)related to public transport performance.Secondly,it joins this to longitudinal big data-delay information continuously broadcast by the network over a year,thus forming hundreds of millions of data artifacts.Topics,tones,and sentiment are modeled using machine learning and Natural Language Processing(NLP)techniques.These resulting data,and models,are compared to opinions derived from a citizen survey among users.The validity of such data and models versus the intentions of users,in the context of systems that monitor and improve transport performance,are discussed.As such,key recommendations for developing Smart Cities were formed in an applied research context based on these data and techniques. | Oliver Lock Christopher Pettit | 2020 | Geo-Spatial Information Science2020，23，4： | 5 |
| 2 | Mechanisms controlling the durability of thermal barrier coatings显示文摘 | A.G. Evans D.R. Mumm J.W. Hutchinson G.H. Meier F.S. Pettit | 2001 | Progress in Materials Science2001，，5： | 2 |
| 3 | Mechanisms for the hot corrosion of nickel - base alloys 显示文摘 | GOEBEL J A PETTIT F S GOWARD G W | 1973 | Metall Trans1973，4，1： | 2 |
| 4 | 显示文摘 | Meier G H Pettit F S Smialek J L | 1995 | Mater Corr1995，46，3： | 2 |
| 5 | Uncertainties and dynamic problems of bolted joints and other fasteners显示文摘 | R.A. Ibrahim C.L. Pettit | 2003 | Journal of Sound and Vibration2003，，3： | 2 |
| 6 | Antineoplastic agents-385,The isolation and structure of a scalrane of a scalarane-type sesterterpene from the Indian Ocean porifera Hyrtios erecta 显示文摘 | Cichacz ZA | 1998 | Collect Czech Chem Commun1998，63，10： | 1 |
| 7 | The dimer interfaces of protease and extra-protease domains influence the activation of protease and the specificity of Gag Pol cleavage显示文摘 | Pettit S C Gulnik S Everitt L | 2003 | J Virol2003，77，1： | 1 |
| 8 | Risk factors for venous throm- boembolism in orthopedic surgery 显示文摘 | Zaw HM Osborne IC Pettit PN | 2002 | Isr Ivied Assos J2002，4，11： | 1 |
| 9 | Mixed fermentation for natural product drug discovery显示文摘 | Pettit R K | | 0，，： | 1 |
| 10 | Effects of uncertainty on Nonlinear Plate Aeroelastic Response 显示文摘 | Lindsley N J Beran P S Pettit C L | 2002 | AIAA Paper2002，1271，： | 1 |
| 11 | CFTR Modulators for the Treatment of Cystic Fibrosis 显示文摘 | Pettit RS Fellner C | 2014 | Pharmacy and Therapeutics2014，39，7： | 1 |
| 12 | Fluorescent methods for measuring and imaging cytosolic free Ca^2+ in neutrophils显示文摘 | Hallett M B Davies E V Pettit E J | 1996 | Methods1996，9，3： | 1 |
| 13 | The Nightsat Mis- sion Coneept显示文摘 | Elvidge C D Cinzano P Pettit D R | 2007 | International Journal of Remote Sensing2007，28，12： | 1 |
| 14 | Isolation of dolastatins 10 - 15 from the marine mollusc dolabella auricularia显示文摘 | Pettit G R Yoshiaki K Cherry L H | 1993 | Tetrahedron1993，49，： | 1 |
| 15 | Isolation and structure of the strong cell growth and tubulin inhibitor combretastatin A-4 显示文摘 | PETTIT G R S1NGH S B HAMEL E | 1989 | Experientia1989，45，2： | 1 |
| 16 | Isolation and structure of phyllanthostatin 显示文摘 | Pettit G R Schaufelberger D E Nieman R A | 1990 | J Nat Prod1990，53，6： | 1 |
| 17 | Structurefunction studies of Interleukin 15 using site-specific mutagenesis, polyethylene glycol conjugation, and homology modeling 显示文摘 | Pettit DK Bonnert TP Eisenman J | 1997 | J Biol Chem1997，272，4： | 1 |
| 18 | Mechanisms controlling the durability of thermal barrier coatings显示文摘 | EVANS A G MUMM D R HUTCHINSON J W MEIER G H Pettit F S | 2001 | Progress in Materials Science2001，46，5： | 1 |
| 19 | TRANCE/RANKL knockout mice are protected from bone erosion in a serum transfer model of arthritis显示文摘 | Pettit AR Ji H Vonstechal D | 2001 | Am J Pathol2001，159，5： | 1 |
| 20 | Surhee-eom- plex films of guanidine on tantalum nitride electrochemically characterized for application in chemical mechanical planariza- tion 显示文摘 | ROCK S E CRAIN D J PETTIT C M | 2012 | Thin Solid Films2012，520，7： | 1 |
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