639 citations · 1.1k across the 26 of their papers we have counts for
28 papers
Modeling Urban Air Quality Using Taxis as Sensors
Anastasios Noulas, Yasin Acikmese, Charles QC LI +5
Monitoring urban air quality with high spatiotemporal resolution continues to pose significant challenges. We investigate the use of taxi fleets as mobile sensing platforms, analyz…
Modelling Urban Dynamics with Multi-Modal Graph Convolutional Networks
Krittika D'Silva, Jordan Cambe, Anastasios Noulas +2
Modelling the dynamics of urban venues is a challenging task as it is multifaceted in nature. Demand is a function of many complex and nonlinear features such as neighborhood compo…
Modelling Cooperation and Competition in Urban Retail Ecosystems with Complex Network Metrics
Jordan Cambe, Krittika D'Silva, Anastasios Noulas +2
Understanding the impact that a new business has on the local market ecosystem is a challenging task as it is multifaceted in nature. Past work in this space has examined the colla…
Leveraging Mobility Flows from Location Technology Platforms to Test Crime Pattern Theory in Large Cities
Cristina Kadar, Stefan Feuerriegel, Anastasios Noulas +1
Crime has been previously explained by social characteristics of the residential population and, as stipulated by crime pattern theory, might also be linked to human movements of n…
Mobile Recognition of Wikipedia Featured Sites using Deep Learning and Crowd-sourced Imagery
Jimin Tan, Anastasios Noulas, Diego Sáez +1
Rendering Wikipedia content through mobile and augmented reality mediums can enable new forms of interaction in urban-focused user communities facilitating learning, communication…
Exploiting Population Activity Dynamics to Predict Urban Epidemiological Incidence
Gergana Todorova, Anastasios Noulas
Ambulance services worldwide are of vital importance to population health. Timely responding to incidents by dispatching an ambulance vehicle to the location a call came from can o…
Modelling Metropolitan-area Ambulance Mobility under Blue Light Conditions
Marcus Poulton, Anastasios Noulas, David Weston +1
Actions taken immediately following a life-threatening personal health incident are critical for the survival of the sufferer. The timely arrival of specialist ambulance crew in pa…
Detecting Socio-Economic Impact of Cultural Investment Through Geo-Social Network Analysis
Xiao Zhou, Desislava Hristova, Anastasios Noulas +1
Taking advantage of nearly 4 million transition records for three years in London from a popular location-based social network service, Foursquare, we study how to track the impact…
Evaluating the impact of the 2012 Olympic Games policy on the regeneration of East London using spatio-temporal big data
Xiao Zhou, Desislava Hristova, Anastasios Noulas +1
For urban governments, introducing policies has long been adopted as a main approach to instigate regeneration processes, and to promote social mixing and vitality within the city.…
Discovering Latent Patterns of Urban Cultural Interactions in WeChat for Modern City Planning
Xiao Zhou, Anastasios Noulas, Cecilia Mascoloo +1
Cultural activity is an inherent aspect of urban life and the success of a modern city is largely determined by its capacity to offer generous cultural entertainment to its citizen…
Cultural Investment and Urban Socio-Economic Development: A Geo-Social Network Approach
Xiao Zhou, Desislava Hristova, Anastasios Noulas +2
Being able to assess the impact of government-led investment onto socio-economic indicators in cities has long been an important target of urban planning. However, due to the lack…
Predicting the temporal activity patterns of new venues
Krittika D'Silva, Anastasios Noulas, Mirco Musolesi +2
Estimating revenue and business demand of a newly opened venue is paramount as these early stages often involve critical decisions such as first rounds of staffing and resource all…
Foursquare to The Rescue: Predicting Ambulance Calls Across Geographies
Anastasios Noulas, Colin Moffatt, Desislava Hristova +1
Understanding how ambulance incidents are spatially distributed can shed light to the epidemiological dynamics of geographic areas and inform healthcare policy design. Here we anal…
Developing and Deploying a Taxi Price Comparison Mobile App in the Wild: Insights and Challenges
Anastasios Noulas, Vsevolod Salnikov, Desislava Hristova +2
As modern transportation systems become more complex, there is need for mobile applications that allow travelers to navigate efficiently in cities. In taxi transport the recent pro…
Tracking Urban Activity Growth Globally with Big Location Data
Matthew Daggitt, Anastasios Noulas, Blake Shaw +1
In recent decades the world has experienced rates of urban growth unparalleled in any other period of history and this growth is shaping the environment in which an increasing prop…
A Multilayer Approach to Multiplexity and Link Prediction in Online Geo-Social Networks
Desislava Hristova, Anastasios Noulas, Chloë Brown +2
Online social systems are multiplex in nature as multiple links may exist between the same two users across different social networks. In this work, we introduce a framework for st…
Mining Open Datasets for Transparency in Taxi Transport in Metropolitan Environments
Anastasios Noulas, Vsevolod Salnikov, Renaud Lambiotte +1
Uber has recently been introducing novel practices in urban taxi transport. Journey prices can change dynamically in almost real time and also vary geographically from one area to…
#FoodPorn: Obesity Patterns in Culinary Interactions
Yelena Mejova, Hamed Haddadi, Anastasios Noulas +1
We present a large-scale analysis of Instagram pictures taken at 164,753 restaurants by millions of users. Motivated by the obesity epidemic in the United States, our aim is three-…
Topological Properties and Temporal Dynamics of Place Networks in Urban Environments
Anastasios Noulas, Blake Shaw, Renaud Lambiotte +1
Understanding the spatial networks formed by the trajectories of mobile users can be beneficial to applications ranging from epidemiology to local search. Despite the potential for…
OpenStreetCab: Exploiting Taxi Mobility Patterns in New York City to Reduce Commuter Costs
Vsevolod Salnikov, Renaud Lambiotte, Anastasios Noulas +1
The rise of Uber as the global alternative taxi operator has attracted a lot of interest recently. Aside from the media headlines which discuss the new phenomenon, e.g. on how it h…
Group colocation behavior in technological social networks
Chloë Brown, Neal Lathia, Anastasios Noulas +2
We analyze two large datasets from technological networks with location and social data: user location records from an online location-based social networking service, and anonymiz…
The Call of the Crowd: Event Participation in Location-based Social Services
Petko Georgiev, Anastasios Noulas, Cecilia Mascolo
Understanding the social and behavioral forces behind event participation is not only interesting from the viewpoint of social science, but also has important applications in the d…
Where Businesses Thrive: Predicting the Impact of the Olympic Games on Local Retailers through Location-based Services Data
Petko Georgiev, Anastasios Noulas, Cecilia Mascolo
The Olympic Games are an important sporting event with notable consequences for the general economic landscape of the host city. Traditional economic assessments focus on the aggre…
Hoodsquare: Modeling and Recommending Neighborhoods in Location-based Social Networks
Amy X. Zhang, Anastasios Noulas, Salvatore Scellato +1
Information garnered from activity on location-based social networks can be harnessed to characterize urban spaces and organize them into neighborhoods. In this work, we adopt a da…