Beyond Possession Existence: Duration and Co-Possession

Abstract

This paper introduces two tasks: determining (a) the duration of possession relations and (b) co-possessions, i.e., whether multiple possessors possess a possessee at the same time. We present new annotations on top of corpora annotating possession existence, and experimental results. Regarding possession duration, we derive the time spans we work with empirically from annotations indicating lower and upper bounds. Regarding co-possessions, we use a binary label. Cohen's kappa coefficients indicate substantial agreement, and experimental results show that text is more useful than the image for solving these tasks.

Extracting possessions from text: Experiments and error analysis

“…Later, we extract possessions from text and images from social media posts (Chinnappa, Murugan, and Blanco 2019). We have also explored possession attributes such as duration and co-possession (Chinnappa, Murugan, and Blanco 2020) and targeted changes in possession of important artworks over time (Chinnappa and Blanco 2018b; Chinnappa, Palmer, and Blanco 2020).…”