abstract this study investigates casual relationship between co2 emission and gross domestic product per capita in five different country groups, using cross- country data for the period 1960-2007. to achieve the purpose, the co- integration test and error correction models are applied. results confirm casual relationships between the two variables. a unilateral relationship between gdp and co2...

This paper describes a robust system for information extraction (IE) from spoken language data. The system extends previous hidden Markov model (HMM) work in IE, using a state topology designed for explicit modeling of variablelength phrases and class-based statistical language model smoothing to produce state-of-the-art performance for a wide range of speech error rates. Experiments on broadca...