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Online reviews evolve rapidly over time, which demands much more efficient and flexible algorithms for sentiment analysis than the current approaches. Current approaches detect the overall sentiment of a document, without performing an in-depth analysis to discover. We propose a Document level sentiment classification in conjunction with topic detection and topic sentiment analysis of bigrams simultaneously...
Most existing topic models focus either on extracting static topic-sentiment conjunctions or topic-wise evolution over time leaving out topic-sentiment dynamics and missing the opportunity to provide a more in-depth analysis of textual data. In this paper, we propose an LDA-based topic model for analyzing topic-sentiment evolution over time by modeling time jointly with topics and sentiments. We derive...
This paper presents the design, analysis and test of a novel planar 3-DOF (degree of freedom) precision positioning platform. Three two-level lever amplifiers are utilized to get a large amplification ratio. A more accurate flexible bending model of the lever amplifier is created to calculate the displacement loss relative to the PRBM (pseudo-rigid-body model). The displacement loss factor, the drift...
In this paper, we introduce a further optimization of morphology of compliant joint based on FEM analysis for a compliant-parallel mechanism with a wide working area and a high accuracy. Compliant-parallel mechanism is the mechanism that all joints are composed by compliant joints in a parallel structure. In the integration of compliant and parallel mechanism, the motion of compliant joints can be...
The double parallel-joints CMM is a new coordinate measuring machine that between the tradion coordinate measuring machine and the multi-joint coordinate measuring machine . To further study of the double parallel-joints CMM , it is necessary to study on the error model of the measuring machine. The kinematics model is constructed by the D-H method and the error model for the double parallel-joints...
Mongolian lexical analysis is the first step in Mongolian information processing such as Chinese-Mongolian machine translation. In this paper, we introduce a statistic and rule based approach to solving the Mongolian word segmentation & POS tagging all at once. In this method, we use tree frame as basic statistical model. And then we combine the model with some rules to improve the lexical analysis...
Traditional contract net protocols can simply and flexibly solve the negotiation problem of multi-agent system (MAS). But they canpsilat work very well within the large scale system environment and is ineffective to solve the multi-issue negotiation problem. This paper investigates the reputation contract net protocol (RCNP) and proposes a novel contract net negotiation model based on RCNP. The model...
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