An improved version of the arithmetic optimization algorithm (AOA) based on the opposition-based learning (OBL) strategy called OBLAOA is proposed in this paper. The proposed OBLAOA algorithm consists of two stages, a...
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ISBN:
(纸本)9781665426565
An improved version of the arithmetic optimization algorithm (AOA) based on the opposition-based learning (OBL) strategy called OBLAOA is proposed in this paper. The proposed OBLAOA algorithm consists of two stages, and in the second stage we adds OBL to update the AOA population in each iteration. The improved AOA is compared with the original AOA by using 12 benchmark functions in different dimensions to validate the improvement on exploration with the OBL. Eventually ,we get a conclusion that the OBLAOA is committed to take both candidate solutions and their opposite solutions into consideration, which shows greater opportunity to reach the global optimal and faster convergence acceleration than AOA.
Schedule length minimization of a parallel application with precedence constrained tasks in heterogenous computing systems is always a research hotspot of distributed computing. Unfortunately, accelerating the executi...
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The purposed of hyperspectral unmixing is to estimate the spectral signatures composing the data (endmembers) and their abundance fractions. However, most of the traditional sparse unmixing methods are effective in th...
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ISBN:
(纸本)9781665426565
The purposed of hyperspectral unmixing is to estimate the spectral signatures composing the data (endmembers) and their abundance fractions. However, most of the traditional sparse unmixing methods are effective in the case of high signal-to-noise ratio (SNR), but is not good in the case of high noise. In order to solve this problem, we innovatively integrates adaptive total variation (ATV) regularization into hyperspectral sparse unmixing and propose a new hyperspectal sparse unmixing model named adaptive total variation regularized for sparse unmixing (SU_ATV). The model can adaptively adjust the horizontal difference and vertical difference of TV, can better optimize the efficiency of TV to improve the anti-noise performance. The experimental results show that SU_ATV has good anti-noise performance to the sparse unmixing.
作者:
Shi, LupingTsinghua Univ
Dept Precis Instrument Beijing Innovat Ctr Future Chips Opt Memory Natl Engn Res CtrCtr Brain Inspired C Beijing 100084 Peoples R China
Recently, artificial intelligence has made rapid progresses. However, existing AI systems still encounter difficulties even for somethings that humans can easily do. The ultimate way to solve these problems is to deve...
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ISBN:
(纸本)9781728195940
Recently, artificial intelligence has made rapid progresses. However, existing AI systems still encounter difficulties even for somethings that humans can easily do. The ultimate way to solve these problems is to develop artificial general intelligence (AGI). Brain inspired computing (BIC) systems are one of the most promising technologies to integrate computer science and neuroscience to facilitate the development of AGI. In this talk, three issues will be discussed: (1) why do we need BIC system? (2) the current status and latest progress in BIC chips, software, and systems; (3) how to develop BIC systems to support AGI with limited understanding of the brain mechanisms. A hybrid and scalable exploration platform of AGI is demonstrated by an unmanned bicycle control system. The main challenges, possible solutions and strategies to develop BIC systems to stimulate AGI development will be addressed.
With the deepening integration of artificial intelligence, ICT in education is approaching to the stage of smart education, the main purpose of which is to realize learning personalization. This paper constructs an in...
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ISBN:
(纸本)9781665426565
With the deepening integration of artificial intelligence, ICT in education is approaching to the stage of smart education, the main purpose of which is to realize learning personalization. This paper constructs an intelligent tutoring system to allow teacher establish the course knowledge model visually based on ontology. This system evaluates the learning situation of students using a test auto-generated by a global prediction accuracy optimization algorithm. The learning diagnosis module is implemented according to the learning situations of students and the structure analysis of knowledge graph based on node contribution. The resource recommendation module is implemented through the importance ranking of learning resources. The prototype system is constructed and the experiments are conducted. The results show that our approach can achieve personalized learning well in a certain range.
Drowsiness detection is a significant problem, most existing non-intrusive methods estimate drowsiness only by single images, without leveraging the temporal information available in the frame sequence. The lack of te...
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ISBN:
(纸本)9781665426565
Drowsiness detection is a significant problem, most existing non-intrusive methods estimate drowsiness only by single images, without leveraging the temporal information available in the frame sequence. The lack of temporal information leads to the inability of drowsiness detection to indicate consecutive behaviors. To this end, we present a drowsiness detection method, which takes into account both eye and head pose deep feature representation by conducting feature fusion. Then, the fused feature is fed into the LSTM (Long Short-Term Memory) network to enhance the accuracy of the drowsiness detection model through temporal information. The experimental results on the NHTU-DDD dataset and the self-constructed dataset show that the proposed method outperforms six existing advanced approaches.
Modern realities and the rapid development of digital technologies in the era of Industry 4.0 bring to the fore the task of developing intelligent systems for precision agriculture. Grazing livestock has proven its im...
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Capturing knowledge in ontology-based AI applications may significantly propagate technical/statistical, cultural/social, cognitive/psychological, or other types of bias, to un-fair AI models and to their generated de...
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ISBN:
(纸本)9781665426565
Capturing knowledge in ontology-based AI applications may significantly propagate technical/statistical, cultural/social, cognitive/psychological, or other types of bias, to un-fair AI models and to their generated decisions. Biased ontologies (and consequently, knowledge graphs) engineered for intelligent surveillance applications can introduce technical barriers in fair capture of offenders, thus it must be researched as a first priority problem and a constant concern for explicit actions to be taken in the era of a more secure and fair world. In this paper we report preliminary research conducted on the novel topic of engineering fair ontologies and present first experiments with a prototype ontology and knowledge graph in the surveillance domain. Engineering fair ontologies is a quite new research topic, thus, the related work is at early stages. Having said that, in this paper we already highlight a recommended methodological approach for unbiasing ontologies, demonstrated in the surveillance domain, and we identify specific key research issues and challenges for further investigation by the ontology engineering community.
In the real world, objects are usually measured at different scales and information is often incomplete. The main objective of this study is how to quickly obtain the optimal scale combinations of incomplete generaliz...
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ISBN:
(纸本)9781665426565
In the real world, objects are usually measured at different scales and information is often incomplete. The main objective of this study is how to quickly obtain the optimal scale combinations of incomplete generalized multi-scale decision systems (IGMDSs). First, the concept of IGMDSs is introduced, and the sequential three-way decision model of scale space is developed. Second, a stepwise optimal scale selection algorithm is proposed to obtain an optimal scale combination of IGMDS quickly. Finally, to describe the relationships among the scale combinations, the adjacency matrix of the Hasse diagram and updating method for the adjacency matrix are proposed. Accordingly, an efficient optimal scale combinations selection algorithm based on sequential three-way decision is proposed to obtain all optimal scale combinations of IGMDS. Experimental results demonstrate that the proposed algorithms can significantly reduce computational time.
Recommender systems have been used for suggesting the most suitable products and services for users in diverse scenarios. More recently, the need for making recommendations for groups of users has become increasingly ...
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ISBN:
(纸本)9781665426565
Recommender systems have been used for suggesting the most suitable products and services for users in diverse scenarios. More recently, the need for making recommendations for groups of users has become increasingly relevant. In addition, there are applications in which recommendations are required in a consecutive sequence. Group recommendations present a challenge for recommender systems: how to balance the preferences of the individual members of a group. On the other hand, when making recommendations for a group for multiple rounds, a recommender has a possibility to dynamically try to balance the preference differences between the group members. This paper introduces two novel methods for multi-round group recommendation scenarios: the adjusted average aggregation method and the average-min-disagreement aggregation method. Both methods aim to provide a group with highly relevant results for the group, while remaining fair for all group members. We experimentally evaluate our approach for groups with different characteristics and show that our methods outperform baseline solutions in all scenarios.
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