Summarizing document texts at various levels of detail is required for many information selection tasks. For instance, when loading and visualizing documents on small screens of handheld devices, it is important to be able to dynamically compress texts. In this article we discuss a technique of generating hierarchical topic trees of a text and to use them in various ways to build summaries of a...

We present a novel Bayesian topic model for learning discourse-level document structure. Our model leverages insights from discourse theory to constrain latent topic assignments in a way that reflects the underlying organization of document topics. We propose a global model in which both topic selection and ordering are biased to be similar across a collection of related documents. We show that...

Since the 21st century, "literacy" has been valued by countries all over world and included in core of educational reform, cultivation students' literacy put to an unprecedented height. At present stage, although China's curriculum reform is deepening stage from three-dimensional goal literacy, teaching auxiliary books that consistently implement comprehensive development students are still ini...

With the pervasion of social media, topic identification in short texts attracts increasing attention in recent years. However, in nature the texts of social media are short and noisy, and the structures are sparse and dynamic, resulting in difficulty to identify topic categories exactly from online social media. Inspired by social science findings that preference consistency and social contagi...

This chapter examines organisational behaviour research by using the case study approach. The study of organisational behaviour is a broad subject area. The paper outlines our experiences of identifying a research topic, justification of the topic within the context of published literature and the selection of suitable research methodologies. Within this, we identify what the research questions...

Given the wide topic coverage and the sometimes introductory character of the book, it is not helpful that only 21 bibliographic entries are provided for the entire book. The offer of a wider bibliography selection would significantly improve the usefulness of the book, since its topic diversity is likely to require for most readers additional reading on some of the topics. Dr M. Sergio Campoba...

We are building a broadcast news video archive where topics of interest can be retrieved and tracked easily. This paper introduces a structuring method applied to the accumulated news videos. First they are segmented into topic units and then threaded according to their mutual relations. A user interface for topic thread-based news video retrieval is also introduced. Since the topic thread stru...

This study concerns topic selection in conversational reports of a personal event, the birth of a baby. Ninety phone calls from 12 fathers and 7 mothers were analyzed in terms of the subject’s prior concerns (prenatal questionnaire) and the outcome of events (postpartum questionnaire). Four analyses were conducted. The first showed that subjects were likely to mention topics of high, rather tha...