Social media (SM) data provides a vast record of humanity's everyday thoughts, feelings,
and actions at a resolution previously unimaginable. Because user behavior on SM is a …

Social media is an invaluable source of time-critical information during a crisis. However,
emergency response and humanitarian relief organizations that would like to use this …

The core decomposition of networks has attracted significant attention due to its numerous
applications in real-life problems. Simply stated, the core decomposition of a network …

In recent times, humanitarian organizations increasingly rely on social media to search for
information useful for disaster response. These organizations have varying information …

Social media data analysis is a popular research domain since the last decade. Detecting
the events and sub-events from social media posts that require special attention is one of the …

We operate a change of paradigm and hypothesize that keywords are more likely to be
found among influential nodes of a graph-ofwords rather than among its nodes high on …

In social networks, the leave of critical users may significantly break network engagement,
ie, lead a large number of other users to drop out. A popular model to measure social …

In this paper, we study the problem of the anchored k-core. Given a graph G, an integer k
and a budget b, we aim to identify b vertices in G so that we can determine the largest …

Being able to automatically link social media and satellite imagery holds large opportunities
for research, with a potentially considerable impact on society. The possibility of integrating …

In this paper, we present a novel document similarity measure based on the definition of a
graph kernel between pairs of documents. The proposed measure takes into account both …