Kernel-Based Efficient Lifelong Learning Algorithm

Author(s):  
Seung-Jun Kim ◽  
Rami Mowakeaa
2019 ◽  
Vol 20 (1) ◽  
pp. 25-41 ◽  
Author(s):  
Jiaqi Wei ◽  
Huaping Liu ◽  
Bowen Wang ◽  
Fuchun Sun

Abstract Tactile emotion recognition provides a lot of valuable information in human-computer interaction, and it has strong application prospects in many aspects such as smart home and medical treatment. So this situation raises a question: How to quickly and efficiently let the robot perform the correct emotion recognition? In this work, we develop a lifelong learning algorithm which is based on the efficient dictionary learning technology, to tackle the tactile emotion recognition across different tasks. To verify the efficiency of the proposed method, we applied it to two data sets for experimentation: Corpus of Social Touch (CoST) and our dataset(We built it with a 12X12 array sensor). The results show that the proposed lifelong learning algorithm achieves satisfactory results.


2021 ◽  
Vol 5 (Supplement_1) ◽  
pp. 872-873
Author(s):  
Takashi Yamashita ◽  
Thomas Smith ◽  
Shalini Sahoo ◽  
Phyllis Cummins

Abstract Continuing adult education and training, or lifelong learning, has become increasingly important to fully engage in rapidly changing technology and information-rich societies. However, without motivation to learn (MtL), lifelong learning participation is unlikely to occur. Although previous research has identified lifelong learning gaps by various demographic characteristics, including age, gender, and race/ethnicity, little is known about the intersectionality or differences in MtL across specific sub-groups (e.g., older Black women vs. older Black men) at the national level. The current study analyzed U.S. data from the 2012/2014/2017 Program for International Assessment of Adult Competencies (PIAAC) to examine MtL at the intersections of age (five 10-year age groups), gender (women vs. men), and race (White vs. Black). The previously established 4-item latent MtL construct was evaluated for twenty sub-groups using the alignment optimization method, which is a machine learning algorithm for latent mean estimation and simultaneous multiple group comparisons. Results showed that the latent MtL construct was validly measured across the sub-groups, and the estimated sub-group means were then used to develop a national MtL profile. Overall, older adults tended to have lower MtL than younger age groups. Notably, compared to than older Black men age 66+ years, older White men aged 55-65 and 66+ years old had lower MtL (latent mean differences of -0.29 and -0.41, respectively, p < .05). Additionally, older Black women had significantly lower MtL than older Black men (latent mean difference = -0.50, p < .05). The national MtL profiles, the intersectionality and policy implications were discussed.


2021 ◽  
Vol 18 (6) ◽  
pp. 7602-7618
Author(s):  
Yufeng Qian ◽  

<abstract> <p>The study expects to solve the problems of insufficient labeling, high input dimension, and inconsistent task input distribution in traditional lifelong machine learning. A new deep learning model is proposed by combining feature representation with a deep learning algorithm. First, based on the theoretical basis of the deep learning model and feature extraction. The study analyzes several representative machine learning algorithms, and compares the performance of the optimized deep learning model with other algorithms in a practical application. By explaining the machine learning system, the study introduces two typical algorithms in machine learning, namely ELLA (Efficient lifelong learning algorithm) and HLLA (Hierarchical lifelong learning algorithm). Second, the flow of the genetic algorithm is described, and combined with mutual information feature extraction in a machine algorithm, to form a composite algorithm HLLA (Hierarchical lifelong learning algorithm). Finally, the deep learning model is optimized and a deep learning model based on the HLLA algorithm is constructed. When K = 1200, the classification error rate reaches 0.63%, which reflects the excellent performance of the unsupervised database algorithm based on this model. Adding the feature model to the updating iteration process of lifelong learning deepens the knowledge base ability of lifelong machine learning, which is of great value to reduce the number of labels required for subsequent model learning and improve the efficiency of lifelong learning.</p> </abstract>


2021 ◽  
Author(s):  
Regina Reis da Costa Alves ◽  
Frederico Caetano Jandre de Assis Tavares ◽  
José Manoel Seixas ◽  
Anete Trajman

Tuberculosis (TB) is a contagious disease which is among the top 10 causes of death in the world. In order to eliminate the disease by 2050, the treatment of TB infection (TBI) is essential, which requires radiological reports to exclude active tuberculosis. The automatic X-ray classifiers used today are based on models that do not guarantee the retention of knowledge if they need to learn new tasks over time. This work proposes the introduction of the lifelong machine learning (LML) paradigm in automatic X-ray classifiers aimed at helping to diagnose active TB (ATB). Two LML algorithms, Efficient Lifelong Learning Algorithm (ELLA) and Learning without Forgetting (LwF), are applied to the TB and pneumonia classification tasks. The results show that it is possible to keep the performance in both tasks with the LML paradigm.


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