Personalized NewsEvent Retrieval for Small Talk in Social Dialog Systems

This paper presents the NewsTeller system which retrieves a news event based on a user query and the user’s general interests. It can be used by a social dialog system to initiate news-related small talk. The NewsTeller system is implemented as a pipeline with four stages: After collecting a large set of potentially relevant news events, a classifier is used to filter out mal- formed events. The remaining events are then ranked ac- cording to a relevance value predicted by a regressor. In a final step, a short summary of the highest-ranked event is generated and returned to the user. Both the classifier and the regressor were evaluated on hand-labeled data sets. In addition to this, a user study was conducted to further validate the system. Evaluation results indicate that the proposed approach performs significantly better than a random baseline

Interlinking Unstructured and Structured Knowledge in an Integrated Framework

none5Francesco Corcoglioniti; Marco Rospocher; Roldano Cattoni; Bernardo Magnini; Luciano SerafiniCorcoglioniti, Francesco; Rospocher, Marco; Cattoni, Roldano; Magnini, Bernardo; Serafini, Lucian

Interlinking Unstructured and Structured Knowledge in an Integrated Framework

Despite the widespread diffusion of structured data sources and the public acclaim of the Linked Open Data initiative, a preponderant amount of information remains nowadays available only in unstructured form, both on the Web and within organizations. While different in form, structured and unstructured contents speak about the very same entities of the world, their properties and relations; still, frameworks for their seamless integration are lacking. In this paper we describe the design of the KnowledgeStore, a scalable, fault-tolerant, and Semantic Web grounded storage system for interlinking structured and unstructured data. We discuss its capability to adapt to new types of content and application scenarios, and to provide reasoning and semantic queries services on top of stored contents. We also comment on its envisaged use in the NewsReader EU project to manage large amounts of economical-financial data