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Showing 1-25 of 2,224 resultsfor "Index Terms":Ambiguity Problem
"Index Terms":Ambiguity Problem
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Comparing Engineering Students’ and Professionals’ Conceptions of Ambiguity
Elliot P. Douglas;David J. Therriault;Marah B. Berry;Jeremy A. M. Waisome
2022 IEEE Frontiers in Education Conference (FIE)
Year: 2022 | Conference Paper |
Engineers are frequently confronted with complex, unique, and challenging problems. Many of our most pressing engineering problems contain ambiguous elements, and a core activity of engineering is being able to solve these complex problems effectively. While engineering problems are often described as ambiguous, ambiguity has not been clearly defined in the literature in the context of engineering...Show More
Research on Chinese-Language Disambiguation Based On Computer
2019 IEEE 3rd Information Technology, Networking, Electronic and Automation Control Conference (ITNEC)
Year: 2019 | Conference Paper |
When using computer to deal with natural language documents,various ambiguities are problmes that must be faced and solved, to some excent, ambiguity resolution becomes one of the core tasks in natural-language processing. Aim at the particularity of the Chinese language disambiguation, the paper discusses the focus of the ambiguity: ambiguity definition, ambiguity classification, ambiguity cause ...Show More
In this paper, we discuss the ambiguity function (AF) synthesis problem for unimodular sequences, which are widely used in radar/sonar and communication systems. Notions of discrete-time ambiguity function and discrete ambiguity function (DAF) are defined, and the corresponding properties are also discussed for unimodular sequences. Depending on these properties, two algorithms are proposed to syn...Show More
A fuzzy utility-based agent for the design problem
2008 IEEE International Engineering Management Conference
Year: 2008 | Conference Paper |
This article conceptualizes, formalizes, and tests a utility-based agent with multiple goals capable of designing sequences of actions, in an environment where perceptions regarding the present and desired situations of the agent, its actions, and information that it maintains internally with respect to the effects of these actions are ambiguous and vague concepts. Fuzzy sets, the compositional ru...Show More
Semi-automation for ambiguity resolution in Open Source Software requirements
Kanwal Daud Gill;Arif Raza;Athar Mohsin Zaidi;Muhammad Muneeb Kiani
2014 IEEE 27th Canadian Conference on Electrical and Computer Engineering (CCECE)
Year: 2014 | Conference Paper |
Cited by: Papers (7)
The critical phase of Requirements Engineering (RE) is an active research domain for decades. The evolutions in RE over the years have improved them considerably but still many anomalies exist. It is especially true for the case of Open Source Software Development (OSSD) where most informal requirements and communications exist. With growing problems and extreme participant heterogeneity, the usua...Show More
Range Ambiguity Suppression for Underwater Distributed Localization Based on Total Support Degree
2020 IEEE International Conference on Signal Processing, Communications and Computing (ICSPCC)
Year: 2020 | Conference Paper |
Underwater distributed synchronous positioning can be adopted to locate moving targets at a high speed. But the problem of range ambiguity always exists, as synchronous period of the system is short. A range ambiguity suppression method based on total support degree (TSD) is proposed for solving the range ambiguity problem with multipath interference. The time of arrival and phase difference measu...Show More
Ambiguity during engineering problem solving
Elliot P. Douglas;Sevcan Agdas;Christine Lee;Mirka Koro-Ljungberg;David J. Therriault
2015 IEEE Frontiers in Education Conference (FIE)
Year: 2015 | Conference Paper |
Work place engineering problems are recognized as being complex and ambiguous. However, most of the problems students are asked to solve during their degree programs are classroom problems. Most studies of ambiguity in problem solving have defined ambiguity as a characteristic of the problems. We are interested in understanding how students interpret engineering problems, either creating or resolv...Show More
Characterization of Problem Types in a Statics Textbook
Elliot P. Douglas;Nicole Goetz;David J. Therriault;Marah B. Berry
2020 IEEE Frontiers in Education Conference (FIE)
Year: 2020 | Conference Paper |
In this Work in Progress Research paper we present preliminary results on analysis of the problems present in a common engineering textbook. In order to transition students from novice to expert problem solving, they must have practice solving problems that are typical of engineering practice, i.e. ill-structured and complex. While it is generally believed that classroom problems are for the most ...Show More
State-of-art practices to detect inconsistencies and ambiguities from software requirements
International Conference on Computing, Communication & Automation
Year: 2015 | Conference Paper |
Cited by: Papers (7)
An acceptable solution is built only if the problem space is correctly defined, which is the prime reason to perform a Requirement Engineering process before the development of the project. Requirement Engineering is the most important phase of a software development and holds the ability to affect the entire software development actions if improperly implemented. However, the requirement engineer...Show More
Automated Translation Machines: Challenges and a Proposed Solution
2011 Second International Conference on Intelligent Systems, Modelling and Simulation
Year: 2011 | Conference Paper |
Cited by: Papers (4)
Automated translation (MT) tools have become an urgent need in a multilingual environment. Although there are any available tools on the market, unfortunately, a robust MT tool is still a dream. This purpose of this paper is to discuss challenging issues in MT tool developments, the state of art of he MT tools and propose a framework for a semantic-based translation. The focus of this paper is Eng...Show More
A Framework for Yoruba Sentiment Lexicon Disambiguation
Adedapo Bolaji Adeniji;Taiwo Kolajo;Joshua Babatunde Agbogun
2024 International Conference on Science, Engineering and Business for Driving Sustainable Development Goals (SEB4SDG)
Year: 2024 | Conference Paper |
In current society, there are many ways to convey one's thoughts or sentiments regarding a predicament, occasion, good, or service. Additionally, the languages spoken vary from person to person and region to region. The writer's concepts, ideas, or insights must make sense to the reader in their entirety. Word ambiguity continues to affect our ability to understand the author's intention when we r...Show More
The research on joint frame synchronization and phase ambiguity resolution for high data rate M-PSK systems
2010 2nd IEEE International Conference on Information Management and Engineering
Year: 2010 | Conference Paper |
This paper deals with the problem of joint frame synchronization and phase ambiguity resolution for high data rate MPSK systems. We presents a novel method of utilizing a simplified correlation operation which can reduce the computational complexity and use two thresholds to detect the frame starting point and the value of phase ambiguity simultaneously. The parallel architecture of frame synchron...Show More
Doppler ambiguity number estimation based on range walk
2022 3rd International Conference on Electronics, Communications and Information Technology (CECIT)
Year: 2022 | Conference Paper |
Cited by: Papers (1)
The range walk slope is obtained by two-dimensional search using radon transform, but this method has the problems of large amount of search operation and low accuracy of radial velocity estimation. Therefore, based on the traditional single channel method, this chapter uses the range walk information to estimate the Doppler ambiguity number. Firstly, the matched filter method is used to correct t...Show More
Twice Opportunity Knocks Syntactic Ambiguity: A Visual Question Answering Model with yes/no Feedback
Jianming Wang;Wei Deng;Yukuan Sun;Yuanyuan Li;Kai Wang;Guanghao Jin
2019 IEEE International Conference on Multimedia and Expo (ICME)
Year: 2019 | Conference Paper |
Cited by: Papers (1)
Visual Question Answering (VQA) is a joint task that aims to answer questions based on given images. During dialogs between humans, syntactic ambiguity is a common phenomenon and it also could be found in the questions of VQA systems. Generally, the existing methods for VQA utilize one-shot answering frameworks, which will face a great difficulty if syntactic ambiguity occurs in questions. In huma...Show More
Application of Frequency Diverse Array to Resolve Range Ambiguity for SAR Imaging
2019 6th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR)
Year: 2019 | Conference Paper |
Cited by: Papers (1)
Due to the conflict between Doppler ambiguity and distance ambiguity, traditional single channel synthetic aperture radar (SAR) system fails to achieve azimuth high-resolution and wide-swath imaging at the same time. To mitigate this conflict,a range ambiguity resolution approach for high-resolution and wide-swath(HRWS) by using frequency diverse array(FDA) is proposed in this paper. FDA radar has...Show More
3-D ambiguity analysis method of arbitrary antenna array for direction finding
2014 IEEE International Wireless Symposium (IWS 2014)
Year: 2014 | Conference Paper |
Cited by: Papers (1)
In this paper we propose an approach to 3-D ambiguity (type I ambiguity [l]) analysis of arbitrary antenna arrays. Ambiguity characterization is very important in designing antenna array for direction finding in mobile communications/indoor positioning/radar, which greatly influences practical capability of Direction of Arrival (DOA) estimation. Conventional 2-D ambiguity analysis loses most of am...Show More
An Advanced Scheme for Range Ambiguity Suppression of Spaceborne SAR Based on Cocktail Party Effect
Sheng Chang;Yunkai Deng;Yanyan Zhang;Qingchao Zhao;Robert Wang;Xiaoxue Jia
IGARSS 2022 - 2022 IEEE International Geoscience and Remote Sensing Symposium
Year: 2022 | Conference Paper |
Cited by: Papers (1)
Insipred by the cocktail party effect, an advanced scheme based on blind source separation is put forward to suppress the range ambiguity of spaceborne SAR in this paper. In the scheme, multiple sub-antennas are used to collect multiple echo data sets, which are given different patterns. In this way, the echo signal of the desired region and that of the ambiguous region are weighted using differen...Show More
Resolving ambiguous preposition phrase for text mining applications
2013 International Conference on Computer Applications Technology (ICCAT)
Year: 2013 | Conference Paper |
Text Mining is one of the computational intelligence research areas. The main goal of text mining tool is to discover knowledge which is embedded in unstructured text. The first step of text mining is to extract fact from the texts. However, to build a robust text mining tool is very complex. The first step requires the tool to process a natural language. The major challenging issue in any natural...Show More
A Parity Check Node Synchronization Based Method for Solving Phase Ambiguity Problem in DVB-S Systems
2009 Fifth International Conference on Information Assurance and Security
Year: 2009 | Conference Paper |
Node synchronization is the process of finding codeword boundaries of convolutional code sequence, and syndrome-based method is an efficient algorithm for node synchronization even at low Eb/N0. In this paper, a method derived from syndrome-based node synchronization is proposed, which is applied for phase ambiguity resolution of DVB-S systems. The method proposed can detect and correct plusmnpi/2...Show More
An Ambiguity Discovery Algorithm on Chinese Word Segmentation Based Dictionary
2009 Second Pacific-Asia Conference on Web Mining and Web-based Application
Year: 2009 | Conference Paper |
Cited by: Papers (2)
Chinese word segmentation is a basic research issue on Chinese information processing tasks such as information extraction; information retrieval; machine translation; text classification; automatic text summarization; speech recognition, natural language understanding and So on. And the ambiguity problem is one of the most difficult problems in Chinese word segmentation .The paper introduced seve...Show More
A GNSS integer ambiguity resolution method based on ambiguity domain search strategy
2016 IEEE International Conference on Electronic Information and Communication Technology (ICEICT)
Year: 2016 | Conference Paper |
Cited by: Papers (1)
A new integer ambiguity resolution method is proposed to solve influence caused by Ambiguity real solutions accuracy and high dimensions on LAMBDA search strategy. Its search efficiency is very close to bootstrap algorithm and the success rate is higher. The reason is that the new method set reasonable number of ambiguity reservation number. By using in conjunction with SE-VB method, it Narrows th...Show More
A novel unambiguous tracking scheme for BOC signal family in future GNSS
2018 IEEE International Conference on Applied System Invention (ICASI)
Year: 2018 | Conference Paper |
A novel side-peak elimination scheme is proposed for unambiguous tracking of generic sine- and cosine-phased binary offset carrier (BOC) signal in this paper. In the proposed scheme, the split sub-carrier correlations (SSCs) are combined to cancel out the side-peak components. Since the SSCs are generated by splitting the sub-carrier included in all classes of sine- and cosine-phased BOC signals, ...Show More
Radial Velocity Retrieval for Multichannel SAR Moving Targets With Time–Space Doppler Deambiguity
Jia Xu;Zu-Zhen Huang;Zhi-Rui Wang;Li Xiao;Xiang-Gen Xia;Teng Long
In this paper, with respect to multichannel synthetic aperture radar (SAR), we first formulate the problems of Doppler ambiguities on the radial velocity (RV) estimation of a ground moving target in the range-compressed domain, the range-Doppler domain, and the image domain, respectively. It is revealed that in these problems, the cascaded time–space Doppler ambiguity (CTSDA) may arise; that is, t...Show More
The Intelligent Search Method of Ambiguity Function Main Ridge Based on the Adaptive Differential Evolution Algorithm
2018 IEEE 4th Information Technology and Mechatronics Engineering Conference (ITOEC)
Year: 2018 | Conference Paper |
The ambiguity function is an effective tool to solve the problem of radar emitter signals sorting in complex systems. To improve the real-time and accuracy of the ambiguity function main ridge (AFMR), this paper proposes an intelligent method to search AFMR based on adaptive differential evolution algorithm. The signal is pre-identified by the instantaneous frequency (IF) features to reduce the AF...Show More
With the development of space resources, high-precision positioning is a significant way to obtain the on-orbit status information of space targets. Ground radar interferometric is an active space target positioning method, which can provide positioning information in all-weather and all-time. However, the directly measured interferometric phase will be ambiguous when the range difference between ...Show More
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