Boundary detection

Xem 1-20 trên 23 kết quả Boundary detection
  • Sentence boundary detection in speech is important for enriching speech recognition output, making it easier for humans to read and downstream modules to process. In previous work, we have developed hidden Markov model (HMM) and maximum entropy (Maxent) classifiers that integrate textual and prosodic knowledge sources for detecting sentence boundaries.

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  • Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí sinh học Journal of Biology đề tài: Research Article Appling a Novel Cost Function to Hopfield Neural Network for Defects Boundaries Detection of Wood Image

    pdf8p dauphong15 16-02-2012 18 3   Download

  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Adaptive Edge-Oriented Shot Boundary Detection

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  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Automatic Music Boundary Detection Using Short Segmental Acoustic Similarity in a Music Piece

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  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Evaluating Edge Detection through Boundary Detection

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  • Most of previous approaches to automatic prosodic event detection are based on supervised learning, relying on the availability of a corpus that is annotated with the prosodic labels of interest in order to train the classification models. However, creating such resources is an expensive and time-consuming task. In this paper, we exploit semi-supervised learning with the co-training algorithm for automatic detection of coarse level representation of prosodic events such as pitch accents, intonational phrase boundaries, and break indices. ...

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  • An approach to automatic detection of syllable boundaries is presented. We demonstrate the use of several manually constructed grammars trained with a novel algorithm combining the advantages of treebank and bracketed corpora training. We investigate the effect of the training corpus size on the performance of our system. The evaluation shows that a hand-written grammar performs better on finding syllable boundaries than does a treebank grammar.

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  • Japanese dependency structure is usually represented by relationships between phrasal units called bunsetsus. One of the biggest problems with dependency structure analysis in spontaneous speech is that clause boundaries are ambiguous. This paper describes a method for detecting the boundaries of quotations and inserted clauses and that for improving the dependency accuracy by applying the detected boundaries to dependency structure analysis.

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  • This paper talks about the deciding practical sense boundary of homonymous words. The important problem in dictionaries or thesauri is the confusion of the sense boundary by each resource. This also becomes a bottleneck in the practical language processing systems. This paper proposes the method about discovering sense boundary using the collocation from the large corpora and the clustering methods. In the experiments, the proposed methods show the similar results with the sense boundary from a corpus-based dictionary and sense-tagged corpus. ...

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  • In developing the school travel model, we eliminated the 217 students who live outside of their school district boundary or are missing variable information, yielding a sample of 1216 used for model development.We calculated distance to school as the shortest road network travel distance, using ArcGIS v.9.2. We weighted the travel survey sample against the Census 2000 population residing in the school district, accounting for differences in race and income (MetroGIS DataFinder, 2009).

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  • Dewey’s discussion is of interest in part because it reflects a number of common and reasonable intuitions about the boundaries of the aesthetic. I will isolate the particular criteria that emerge from Dewey’s account and identify the most plausible rationale for regarding each as a necessary condition for aesthetic experience. I will then argue that the criteria, as they ought to be understood, do not rule out everyday experiences like those I have described; and, indeed, that there are strong reasons to include such experiences within the realm of the aesthetic....

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  • A major problem of existing anomaly intrusion detection approaches is that they tend to produce excessive false alarms. One reason for this is that the normal and abnormal behaviour of a monitored object can overlap or be very close to each other, which makes it difficult to define a clear boundary between the two.

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  • Pirouetting on the boundaries between sci-fi, the crime thriller and intertextual whimsy, Jasper Fforde's outrageous The Eyre Affair puts you on the wrong footing even on its dedication page, which proudly announces that the book conforms to Crimean War economy standard. Fforde's heroine, Thursday Next, lives in a world where time and reality are endlessly mutable-- someone has ensured that the Crimean War never ended for example--a world policed by men like her disgraced father, whose name has been edited out of existence....

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  • In this paper, a method to prepare video data is proposed consisting of a shot boundary detection technique on the basis of tracking camera motion through the background areas to the video frame (background tracking) and of some other steps to discard noise and to reduce false segmentation for increasing the accuracy of the video stream segmentation. Measures to be taken to overcome the problem of object’s and camera’s motion are proposed and an enhanced algorithm for segmenting video data is also reported.

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  • Architects have been drawing digitally for nearly thirty years. CAD programs have made two­ dimensional drawing efficient, easy to edit, and, with a little practice, simple to do. Yet for many years, as the process of making drawings steadily shifted from being analog to digital, the design of buildings did not really reflect the change. CAD replaced drawing with a parallel rule and lead pointer, but buildings looked pretty much the same. This is perhaps not so surprising-one form of two-dimensional representation simply replaced another.

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  • Bhushan, B. “Micro/Nanotribology and Micro/Nanomechanics of Magnetic...” Handbook of Micro/Nanotribology. Ed. Bharat Bhushan Boca Raton: CRC Press LLC, 1999 © 1999 by CRC Press LLC Micro/Nanotribology and Micro/Nanomechanics of Magnetic Storage Devices Bharat Bhushan 14.1 Introduction 14.2 Experimental Experimental Apparatus and Measurement Techniques • Test Specimens 14 14.3 Surface Roughness 14.4 Friction and Adhesion Nanoscale Friction • Microscale Friction and Adhesion 14.5 Scratching and Wear Nanoscale Wear • Microscale Scratching • Microscale Wear 14.

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  • EDGE DETECTION Changes or discontinuities in an image amplitude attribute such as luminance or tristimulus value are fundamentally important primitive characteristics of an image because they often provide an indication of the physical extent of objects within the image. Local discontinuities in image luminance from one level to another are called luminance edges. Global luminance discontinuities, called luminance boundary segments, are considered in Section 17.4.

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  • TELECOMMUNICATION TRANSMISSION MEDIA In this chapter the characteristics of the media in which the transmission of signals takes place will be discussed. It so happens that we humans basically communicate through speech=hearing and by sight. Human hearing is from 20 Hz to 20 kHz and we can see only the portion of radiation spectrum from about 4:3 Â 1014 Hz (infrared; l ¼ 7 Â 10À7 m) to approximately 7:5 Â 1014 Hz (ultraviolet; l ¼ 4 Â 10À7 m). These communication channels occupy only small portions of the detectable frequency spectrum which has no lower boundary but has an upper...

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  • We study the challenges raised by Arabic verb and subject detection and reordering in Statistical Machine Translation (SMT). We show that post-verbal subject (VS) constructions are hard to translate because they have highly ambiguous reordering patterns when translated to English. In addition, implementing reordering is difficult because the boundaries of VS constructions are hard to detect accurately, even with a state-of-the-art Arabic dependency parser.

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  • We describe a method for disambiguating Chinese commas that is central to Chinese sentence segmentation. Chinese sentence segmentation is viewed as the detection of loosely coordinated clauses separated by commas. Trained and tested on data derived from the Chinese Treebank, our model achieves a classification accuracy of close to 90% overall, which translates to an F1 score of 70% for detecting commas that signal sentence boundaries.

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