18 Result(s)
within
Chapter
Ingmar Weber
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Chapter
New Migration Data: Challenges and Opportunities
Migration is hard to measure due to the complexity of the phenomenon and the limitations of traditional data sources. The Digital Revolution has brought opportunities in terms of new data and new methodologies...
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Chapter and Conference Paper
Studying Migrant Assimilation Through Facebook Interests
Migrant assimilation is a major challenge for European societies, in part because of the sudden surge of refugees in recent years and in part because of long-term demographic trends. In this paper, we use Face...
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Chapter and Conference Paper
Using Computer Vision to Study the Effects of BMI on Online Popularity and Weight-Based Homophily
Increasing prevalence of obesity has disconcerting implications for communities, for nations and, most importantly, for individuals in aspects ranging from quality of life, longevity and health, to social and ...
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Chapter and Conference Paper
Estimating Group Properties in Online Social Networks with a Classifier
We consider the problem of obtaining unbiased estimates of group properties in social networks when using a classifier for node labels. Inference for this problem is complicated by two factors: the network is ...
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Chapter and Conference Paper
Diversity in Online Advertising: A Case Study of 69 Brands on Social Media
Lack of diversity in advertising is a long-standing problem. Despite growing cultural awareness and missed business opportunities, many minorities remain under- or inappropriately represented in advertising. P...
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Chapter
Is Twitter a Public Sphere for Online Conflicts? A Cross-Ideological and Cross-Hierarchical Look
The rise in popularity of Twitter has led to a debate on its impact on public opinions. The optimists foresee an increase in online participation and democratization due to social media’s personal and interact...
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Chapter
From “I Love You Babe” to “Leave Me Alone” - Romantic Relationship Breakups on Twitter
We use public data from Twitter to study the breakups of the romantic relationships of 661 couples. Couples are identified through profile references such as @user1 writing “@user2 is the best boyfriend ever!!...
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Chapter
International Gender Differences and Gaps in Online Social Networks
Article 1 of the United Nations Charter claims “human rights” and “fundamental freedoms” “without distinction as to [...] sex”. Yet in 1995 the Human Development Report came to the sobering conclusion that “in...
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Chapter
U.S. Religious Landscape on Twitter
Religiosity is a powerful force sha** human societies, affecting domains as diverse as economic growth or the ability to cope with illness. As more religious leaders and organizations as well as believers st...
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Chapter
The Social Name-Letter Effect on Online Social Networks
The Name-Letter Effect states that people have a preference for brands, places, and even jobs that start with the same letter as their own first name. So Sam might like Snickers and live in Seattle. We use soc...
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Chapter and Conference Paper
Detecting Friday Night Party Photos: Semantics for Tag Recommendation
Multimedia annotation is central to its organization and retrieval – a task which tag recommendation systems attempt to simplify. We propose a photo tag recommendation system which automatically extracts seman...
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Chapter and Conference Paper
From Republicans to Teenagers – Group Membership and Search (GRUMPS)
In the early years of information retrieval, the focus of research was on systems aspects such as crawling, indexing, and relevancy ranking. Over the years, more and more user-related information such as click...
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Chapter and Conference Paper
Political Hashtag Trends
Political Hashtag Trends (PHT) is an analysis tool for political left-vs.-right polarization of Twitter hashtags. PHT computes a leaning for trending, political hashtags in a given week, giving insights into the ...
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Chapter and Conference Paper
Diversifying User Comments on News Articles
In this paper we present an approach for diversifying user comments on news articles. In our proposed framework, we analyse user comments w.r.t. four different criteria in order to extract the respective diver...
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Chapter and Conference Paper
Bidder Optimal Assignments for General Utilities
We study the problem of matching bidders to items where each bidder i has general, strictly monotonic utility functions u i,j (p ...
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Chapter and Conference Paper
Sequences Characterizing k-Trees
A non-decreasing sequence of n integers is the degree sequence of a 1-tree (i.e., an ordinary tree) on n vertices if and only if there are least two 1’s in the sequence, and the sum of the elements is 2(n–1). We ...
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Chapter and Conference Paper
Output-Sensitive Autocompletion Search
We consider the following autocompletion search scenario: imagine a user of a search engine ty** a query; then with every keystroke display those completions of the last query word that would lead to the bes...
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Chapter and Conference Paper
Don’t Compare Averages
We point out that for two sets of measurements, it can happen that the average of one set is larger than the average of the other set on one scale, but becomes smaller after a non-linear monotone transformatio...
