Lyric-based song sentiment classification seeks to assign songs appropriate sentiment labels such as light-hearted and heavy-hearted. Four problems render vector space model (VSM)-based text classification approach ineffective: 1) Many words within song lyrics actually contribute little to sentiment; 2) Nouns and verbs used to express sentiment are ambiguous; 3) Negations and modifiers around t...

Conventional vector-based Information Retrieval (IR) models: Vector Space Model (VSM) and Generalized Vector Space Model (GVSM) represents documents and queries as vectors in a multidimensional space. This high dimensional data places great demands on computing resources. To overcome these problems, Latent Semantic Indexing (LSI), a variant of VSM, projects the documents into a lower dimensiona...

To manage in business environment of global economy, enterprises and their information systems have to change continuously. In this context, the use of Viable Systems Model (VSM) [1] that is designed for enterprises to manage in unpredictably changing environment becomes a promising option for requirements engineering in continuous information systems development and change management. VSM [1],...

Sympathetic nerves are purported to stimulate blood vessel growth. The mechanism(s) underlying this stimulation has not been determined. With use of an in vitro coculture model, the present study tests the hypothesis that sympathetic neurons stimulate the growth of vascular smooth muscle (VSM) and evaluates potential mechanisms mediating this stimulation. Sympathetic neurons isolated from super...

The vector space model (VSM) of information retrieval suffers in two areas, it does not utilise term positions and it treats every term as being independent. We examine two information retrieval methods based on the simple vector space model. The first uses the query term position flow within the documents to calculate the document score, the second includes related terms in the query by making...

This chapter considers the usefulness of the Viable System Model (VSM) in information systems (IS) projects. The VSM is a rigorous organizational model which was developed from the study of cybernetics and has been given considerable attention by management science research. The chapter presents a case study that focuses upon the sales team of a manufacturing company. This sales team were seeki...

The classic partial-report procedure was modified to optimize the condition to measure the transient decay of visual sensory memory (VSM, also known as iconic memory). A model was developed to isolate the VSM and visual working memory (VWM) underlying the partial-report performance. The decay of VSM in each subject was well characterized by a single exponential function, thus a lifetime could b...

Damon, Deborah H. VSM growth is stimulated in sympathetic neuron/VSM cocultures: role of TGF-b2 and endothelin. Am. J. Physiol. Heart Circ. Physiol. 278: H404–H411, 2000.—Sympathetic nerves are purported to stimulate blood vessel growth. The mechanism(s) underlying this stimulation has not been determined. With use of an in vitro coculture model, the present study tests the hypothesis that symp...

Objective: To develop a document indexing scheme that improves the retrieval effectiveness of free-text medical documents. Design: The phrase-based vector space model (VSM) uses multi-word phrases as indexing terms. Each phrase consists of a concept in the unified medical language system (UMLS) and its corresponding component word stems. The similarity between concepts are defined by their rela...

The purpose of this study was to present a Monte Carlo (MC) simulation method based on a virtual source, jaw, and MLC model to calculate dose in patient for helical tomotherapy without the need of calculating phase-space files (PSFs). Current studies on the tomotherapy MC simulation adopt a full MC model, which includes extensive modeling of radiation source, primary and secondary jaws, and mul...