Shourabh Rawat

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As a feed-forward architecture, the recently proposed maxout networks integrate dropout naturally and show state-of-the-art results on various computer vision datasets. This paper investigates the application of deep maxout networks (DMNs) to large vocabulary continuous speech recognition (LVCSR) tasks. Our focus is on the particular advantage of DMNs under(More)
Given the deluge of multimedia content that is becoming available over the Internet, it is increasingly important to be able to effectively examine and organize these large stores of information in ways that go beyond browsing or collaborative filtering. In this paper we review previous work on audio and video processing, and define the task of(More)
A bstract Multimedia Event Detection (MED) is an annual task in the NIST TRECVID evaluation, and requires participants to build indexing and retrieval systems for locating videos in which certain predefined events are shown. Typical systems focus heavily on the use of visual data. Audio data, however, also contains rich information that can be effectively(More)
In this paper, we present recent experiments on using Artificial Neural Networks (ANNs), a new " delayed " approach to speech vs. non-speech segmentation, and extraction of large-scale pooling feature (LSPF) for detecting " events " within consumer videos, using the audio channel only. A " event " is defined to be a sequence of observations in a video, that(More)
In this paper we present our audio based system for detecting " events " within consumer videos (e.g. You Tube) and report our experiments on the TRECVID Multimedia Event Detection (MED) task and development data. Codebook or bag-of-words models have been widely used in text, visual and audio domains and form the state-of-the-art in MED tasks. The overall(More)
In this paper we introduce an automatic system that generates textual summaries of Inter-net-style video clips by first identifying suitable high-level descriptive features that have been detected in the video (e.g. visual concepts, recognized speech, actions, objects, persons, etc.). Then a natural language generator is constructed using SimpleNLG to(More)
The audio semantic concepts (sound events) play important roles in audio-based content analysis. How to capture the semantic information effectively from the complex occurrence pattern of sound events in YouTube quality videos is a challenging problem. This paper presents a novel framework to handle the complex situation for semantic information extraction(More)
Huge amount of videos on the Internet have rare textual information, which makes video retrieval challenging given a text query. Previous work explored semantic concepts for content analysis to assist retrieval. However, the human-defined concepts might fail to cover the data and there is a potential gap between these concepts and the semantics expected(More)
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