International Business Machines Corporation

Nuance Communications, Inc.

Xi Jun Ma

Martin Miles Wattenberg

Hao Lu

Nan Cao

Shi Xia Liu

Shixia Liu

Ling Jin

Hai Xin Chai

Wei Z W Zhang

The present invention provides a method and system for constructing a labeled treemap with balanced layout. A range of possible densities of leaf nodes based on designated weights of the leaf nodes and a designated treemap region is determined. A range of possible densities is then searched for a density that could be fitted on and a labeled treemap that could fit on the density. The labeled treemap is presented on a specified display region. By introducing the concept of density into labeled treemap, the present invention ensures the area of region occupied by each leaf node in the constructed labeled treemap is approximately corresponding to the weight of the node, and avoids the case of invisible leaf node in a treemap.

Constructing a labeled treemap with balanced layout

The visibility of a treemap is improved by offsetting the area of a parent node relative to a bounding box containing all of its child nodes while constructing the treemap, so that a part of the bounding box lies outside the area of the parent node, and the area of each child node in the bounding box is located entirely or partially within the area of the parent node. The present invention highlights the parent-child relationships in the treemap with a cascading effect to make the structural information therein more apparent and easier to recognize.

Method and apparatus for improving the visibility of a treemap

A method for distance definition in a text-to-speech conversion system by applying Gaussian Mixture Model (GMM) to a distance definition. According to an embodiment, the text that is to be subjected to text-to-speech conversion is analyzed to obtain a text with descriptive prosody annotation; clustering is performed for samples in the obtained text; and a GMM model is generated for each cluster, to determine the distance between the sample and the corresponding GMM model.

Method and system for statistic-based distance definition in text-to-speech conversion

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Beijing, China

Xi Jun Ma