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Lecture

Understanding Urban Dynamics

In course

DH-500: Computational Social Media

The course integrates concepts from media studies, machine learning, multimedia, and network science to characterize social practices and analyze content in platforms like Twitter/X, Instagram, YouTube, and TikTok. Students will learn computational methods ...

Description

This lecture explores Livehoods, a novel approach to understanding urban dynamics by analyzing social media data. By examining check-in patterns, Livehoods map the diverse areas of a city, each telling a unique story. Machine learning is used to study cities based on 18 million check-ins from foursquare. The lecture delves into clustering venues based on pairwise and social distances, building venue graphs, and spectral clustering. It also covers ambiance inference from Airbnb photos, scene recognition, and biases in geo-localized social media, highlighting the urban bias in volunteered geographic information.

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Instructor

Daniel Gatica-Perez

Official source

Related concepts (11)

Volunteered geographic information

Volunteered geographic information (VGI) is the harnessing of tools to create, assemble, and disseminate geographic data provided voluntarily by individuals. VGI is a special case of the larger phenomenon known as user-generated content, and allows people to have a more active role in activities such as urban planning and mapping. VGI can be seen as an extension of critical and participatory approaches to geographic information systems. Some examples of this phenomenon are WikiMapia, OpenStreetMap, and Yandex.

Urban ecology

Urban ecology is the scientific study of the relation of living organisms with each other and their surroundings in an urban environment. An urban environment refers to environments dominated by high-density residential and commercial buildings, paved surfaces, and other urban-related factors that create a unique landscape. The goal of urban ecology is to achieve a balance between human culture and the natural environment. Urban ecology is a recent field of study compared to ecology.

Neogeography

Neogeography (literally "new geography") is the use of geographical techniques and tools for personal and community activities or by a non-expert group of users. Application domains of neogeography are typically not formal or analytical. From the point of view of human geography, neogeography could be also defined as the use of new specific information society tools, especially the Internet, to the aims and purposes of geography as an academic discipline; in all branches of geographical thought and incorporating contributions from outside of geography performed by non-specialist users in this discipline through the use of specific geographic ICT tools.

Geotagging

Geotagging, or GeoTagging, is the process of adding geographical identification metadata to various media such as a geotagged photograph or video, websites, SMS messages, QR Codes or feeds and is a form of geospatial metadata. This data usually consists of latitude and longitude coordinates, though they can also include altitude, bearing, distance, accuracy data, and place names, and perhaps a time stamp. Geotagging can help users find a wide variety of location-specific information from a device.

Social media

Social media are interactive technologies that facilitate the creation and sharing of information, ideas, interests, and other forms of expression through virtual communities and networks. While challenges to the definition of social media arise due to the variety of stand-alone and built-in social media services currently available, there are some common features: Social media are interactive Web 2.0 Internet-based applications.

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