Ingmar Weber

Studying Migrant Assimilation Through Facebook Interests

Ingmar Weber, Venkata Rama Kiran Garimella

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 Facebook data for advertisers to study the levels o ...

SPRINGER INTERNATIONAL PUBLISHING AG2018

Sponsored search, market equilibria, and the Hungarian Method

Monika Henzinger, Ingmar Weber

Matching markets play a prominent role in economic theory. A prime example of such a market is the sponsored search market. Here, as in other markets of that kind, market equilibria correspond to feasible, envy free, and bidder optimal outcomes. For settin ...

Elsevier Science Bv2013

Bidder optimal assignments for general utilities

Monika Henzinger, Ingmar Weber

We study the problem of matching bidders to items where each bidder i has general, strictly monotonic utility functions u(i,j)(p(j)) expressing his utility of being matched to item j at price p(j). For this setting we prove that a bidder optimal outcome al ...

Elsevier Science Bv2013

Sponsored Search, Market Equilibria, and the Hungarian Method

Monika Henzinger, Paul David Dütting, Ingmar Weber

Two-sided matching markets play a prominent role in economic theory. A prime example of such a market is the sponsored search market where n advertisers compete for the assignment of one of k sponsored search results, also known as "slots", for certain key ...

2010

The stability of the h-index

Monika Henzinger, Ingmar Weber, Jacob Sunol Canadas

Over the last years the h-index has gained popularity as a measure for comparing the impact of scientists. We investigate if ranking according to the h-index is stable with respect to (i) different choices of citation databases, (ii) normalizing citation c ...

Springer Netherlands2010

Purely URL-based Topic Classification

Monika Henzinger, Eda Baykan, Ingmar Weber, Ludmila Marian

Given only the URL of a web page, can we identify its topic? This is the question that we examine in this paper. Usually, web pages are classified using their content, but a URL-only classifier is preferable, (i) when speed is crucial, (ii) to enable conte ...

2009

Bidder Optimal Assignments for General Utilities

Monika Henzinger, Paul David Dütting, Ingmar Weber

We study the problem of matching bidders to items where each bidder i has a general, strictly monotonic utility functions u_{i,j}(p_j) expressing her utility of being matched to item j at price p_j . For this setting we prove that a bidder optimal outcome ...

Springer2009

Web page language identification based on URLs

Monika Henzinger, Eda Baykan, Ingmar Weber

Given only the URL of a web page, can we identify its language? This is the question that we examine in this paper. Such a language classifier is, for example, useful for crawlers of web search engines, which frequently try to satisfy certain language quot ...

2008

Personalized, Interactive Tag Recommendation for Flickr

Ingmar Weber, Nikhil Garg

We study the problem of personalized, interactive tag recommendation for Flickr: While a user enters/selects new tags for a particular picture, the system suggests related tags to her, based on the tags that she or other people have used in the past along ...

Acm Order Department, P O Box 64145, Baltimore, Md 21264 Usa2008