Semantic Content Filtering with Wikipedia and Ontologies. - Pekka Malo; Pyry-Antti Siitari; Oskar Ahlgren; Jyrki Wallenius; Pekka J. Korhonen (ICDM Workshops, 2010)

A Dimensionality Reduction Approach for Semantic Document Classification. - Oskar Ahlgren; Pekka Malo; Ankur Sinha 001; Pekka J. Korhonen; Jyrki Wallenius (SPIM, 2011)

Learning the Roles of Directional Expressions and Domain Concepts in Financial News Analysis. - Pekka Malo; Ankur Sinha 001; Pyry Takala; Oskar Ahlgren; Iivari Lappalainen (ICDM Workshops, 2013)

Gold-standard for Topic-specific Sentiment Analysis of Economic Texts. - Pyry Takala; Pekka Malo; Ankur Sinha 001; Oskar Ahlgren (LREC, 2014)

Research on Sentiment Analysis: The First Decade. - Oskar Ahlgren (ICDM Workshops, 2016)

Semantic Content Filtering and Sentiment Analysis for Financial News. - Oskar Ahlgren (2016)