Reviewerly/exHarmony huggingface dataset:
Graph-Enhanced Multi-Activity Knowledge Tracing

Knowledge tracing (KT), or modeling student knowledge state given their past activity sequence, is one of the essential tasks in online education systems. Research has demonstrated that students benefit from both assessed (e.g., solving problems, which can be graded) and non-assessed learning activities (e.g., watching video lectures, which cannot be graded), and thus, modeling student knowledge from multiple types of activities with knowledge transfer between them is crucial. However, current approaches to multi-activity knowledge tracing cannot capture coarse-grained between-type associations and are primarily evaluated by predicting student performance on upcoming assessed activities (labeled data). Therefore, they are inadequate in incorporating signals from non-assessed activities (unlabeled data). We propose Graph-enhanced Multi-activity Knowledge Tracing (GMKT) that addresses these challenges by jointly learning a fine-grained recurrent memory-augmented student knowledge model and a coarse-grained graph neural network. In GMKT, we formulate multi-activity knowledge tracing as a semi-supervised sequence learning problem and optimize for accurate student performance and activity type at each time step. We demonstrate the effectiveness of our proposed model by experimenting on three real-world datasets.
Boosting the Performance of Deployable Timestamped Directed GNNs via Time-Relaxed Sampling

Timestamped graphs find applications in critical business problems like user classification, fraud detection, etc. This is due to the inherent nature of the data generation process, in which relationships between nodes are observed at defined timestamps. Deployment-focused GNN models should be trained on point-in-time information about node features and neighborhood, similar to the data ingestion process. However, this is not reflected in benchmark directed node classification datasets, where performance is typically reported on undirected versions of graphs that ignore these timestamps. Constraining the leading approaches trained on undirected graphs to timestamp-based message passing at test time leads to sharp drops in performance. This is driven by the blocking of pathways for neighborhood information, which was available during the undirected training phase but not during the test time, highlighting the label leakage issue in applied graph use-cases. We bridge this mismatch of message passing semantics in directed graphs by first resetting baselines while highlighting the semantic case where undirected training/inference would fail. Second, we introduce TRD-GNN, which bridges performance drop, by leveraging a novel GNN sampling layer that relaxes the time-directed nature of the graph only to the extent that it limits any possibility of labels being leaked during the training phase. The two contributions combined form a recipe for robust GNN model deployment in industry use-cases. Finally, we demonstrate the benefits of the proposed relaxation by drawing out qualitative analysis where it helped improve performance on the node classification task on multiple public benchmark and proprietary e-commerce datasets.
MCTN: A Multi-Channel Temporal Network for Wearable Fall Prediction

A key challenge in wearable sensor-based fall prediction is the fact that a fall event can often be performed in several different ways, with each consisting of its own configuration of poses and their spatio-temporal dependencies. Furthermore, to enable fall prevention of a person from imminent falls, precise predictions need to be achieved as far in advance as possible. This leads us to define a multi-channel temporal network, which explicitly characterizes the spatio-temporal relationships within a sensor channel as well as the interrelationships among channels by a combination representation of positional embedding and channel embedding to manage these unique fine-grained configurations among channels of a particular fall event. In addition, a transformer encoder is devised to exchange both inner-channel and inter-channel information in the encoder structure, and as a result, all local spatio-temporal dependencies are globally consistent. Empirical evaluations on two benchmark datasets and one in-house dataset suggest our model significantly outperforms the state-of-the-art methods. Our code is available at: https://github.com/passenger-820/MCTN .
SMART SECURITY SURVEILLANCE

The whole global health system is currently crippled by the COVID-19 pandemic outbreak. It is now crucial to halt the illness from spreading. Wearing a mask,washing our hands often, and avoiding social interaction have all become top considerations throughout the world. The World Health Organization (WHO) strongly advises against spreading the new coronavirus by using a mask that covers the mouth and nose. The primary objective of Smart Security Surveillance is to detect face masks, Motion detection, and Name Detection of a person. The performance of these systems is insufficient for many applications. Face mask identification is more challenging when dealing with a variety of restrictions, such as environmental changes, which is one of the primary causes. After Face detection, Face masks detection is a process thatis improved upon and made more reliable with the aid of OpenCV. OpenCV comes with a variety of helpful methods for item recognition and counting. Numerous industries, including transportation, health care, and environmental science, use object counting.
Inovasi Kreasi Melalui Pendidikan untuk Anak sebagai Generasi Bangsa Masa Depan

The purpose of this service activity is to be creative through education for children as the nation's generation. The methods used include: 1) outreach to the village community or village officials; 2) activities carried out by Sanggar Sejahtera; and 3) learning English. The results of the activities achieved included: 1) Children's Studio activities in Jabung Village, Malang Regency. Through positive activities carried out according to a predetermined schedule, younger siblings are able to learn to share the time they have. The activities that are often carried out are discussions, making short videos to be able to provide lessons widely by sharing these videos on social media. In addition, the Children's Studio also often holds performances during major holidays, such as Independence Day, National Children's Day, and other celebrations. However, during this pandemic, the studio's activities were limited and they could only share lessons with other younger siblings through learning videos that had been made and uploaded to Sanggar Anak's social media. So that the negative activities towards children that we usually encounter in Jabung Village are slowly decreasing and even have to disappear; and 2) English learning activities. Through the learning activities that we carried out, the students from the studio were interested in participating in learning English. Some younger students in the studio never had English lessons at Elementary School (ES) or even Junior High School (JHS). In carrying out learning activities, we try to make learning active and fun by providing games as a form of repeating the lessons that have been given. We also still provide the basics of understanding English so that younger siblings don't feel confused. This makes them understand the importance of mastering languages ​​other than their mother tongue and regional languages.
Research on the Current Situation and Countermeasures of Personalized Teaching of Chinese Language Courses in Island Areas

Using Chinese language courses as a medium to teach Chinese to students in island areas can not only promote the promotion of Mandarin in island areas, but also help students improve and enhance their interpersonal communication, emotional communication, regional mobility, and other aspects. Due to the weak foundation of Chinese language among students in the island area, as well as the obvious practicality and practicality of the island dialect system, personalized teaching of Chinese language courses faces various obstacles. This study analyzes the current situation of Chinese language education in island areas, and systematically analyzes the many shortcomings of personalized teaching in current Chinese language courses in response to the requirements of personalized teaching. It attempts to improve students' Mandarin proficiency, Chinese language and literature cultivation, and basic Chinese knowledge in island areas through various personalized teaching methods.
The Development and Characteristics of Education Research for International Students

Through the analysis of the development process and current situation of international study education, this article discusses its reference significance for study education in China. In the process of promoting international education, we can draw lessons from the advanced experience of international study education, including academic research, discipline construction, curriculum setting, teaching methods, student management and service. In the future, with the deepening of globalization and information, international study education will face new opportunities and challenges. China should actively face, strengthen cooperation, improve the level of study education, and continue to innovate and develop in practice.
Cultivation Strategies of Primary School Students' Extracurricular Reading Interest

The cultivation of students' reading interest is easily influenced by external factors. At this time, teachers and parents should give more reasonable suggestions and correct guidance, so that students can find their extensive knowledge and reading fun in the process of reading, so as to enrich students' reading ability, which is more conducive to the formation of children's values and healthy psychology in the cultivation of extracurricular reading interest.
Research on the Problems and Improvement Countermeasures of Laboratory Management in Higher Vocational Colleges and Universities

Higher vocational colleges were founded at the beginning of the very rich teaching resources into the construction of hardware facilities, so as to better highlight the characteristics of schooling. For higher vocational colleges, the laboratory is their main base. Higher vocational colleges and universities to run a comprehensive technical advantage is also expressed in the laboratory construction of this element. Laboratory is often equipped with more advanced equipment and precious experimental materials, if damage occurs then the impact of the impact in addition to economic loss, will also have a significant impact on the school's experimental teaching work, so from the beginning of the establishment of the laboratory school must do a good job of laboratory management. However, it is found that the laboratory management work in higher vocational schools is not quite satisfactory, and the traditional way of coping with the problem is no longer able to co-ordinate the current problems, therefore, the school must make a good plan to optimize the laboratory management into practice.
Research on the Path of Vocational Students' Innovation and Entrepreneurship Ability under the Background of Carbon Neutral and Carbon Peak

The goal of "carbon peak and carbon neutral" ("double carbon" for short) is a major strategic decision proposed by China. For this reason, the Ministry of Education proposed that universities should provide scientific and technological support and talent guarantee for "double carbon", cultivate innovative talents in the field of carbon peak and carbon neutral, and explore the path of talent training. China faces many challenges in achieving the carbon peak. In the complex system composed of society, energy, economy, environment and science and technology, innovative and entrepreneurial talents are the first resource to promote and achieve this goal. In this paper, we put forward higher vocational students' entrepreneurial ability training path and provide talent support for the realization of the goal of double carbon in our country under the background of carbon peak and carbon neutral in the following aspects including the reinforcing support from government, the improvement of students 'innovative entrepreneurial ability, the further integration of industry-university-research cooperation in double carbon field, the establishment of ecological innovation environment, the promotion of linkage of the vocational education and entrepreneurship innovation, and the evaluation system of innovative entrepreneurship education which contains carbon peak and carbon neutral parameters, etc.
The Current Situation, Influencing Factors and Countermeasures of Innovation and Entrepreneurship Mentor Team Construction in Vocational Colleges under the Background of "Double High Program"

With the rapid development of China's economy and the adjustment of industrial structure, innovation and entrepreneurship have become a key force to promote economic growth and employment growth. China has implemented the "Double High Program" in higher vocational and technical colleges to strengthen innovation and entrepreneurship education so that graduates will have greater space for employment and development. Therefore, it is of great practical significance to build the team of innovation and entrepreneurship mentors of higher vocational college students. Based on the domestic and foreign research on the construction of the innovation and entrepreneurship mentor team of college students in vocational colleges, this paper uses the binary Logistic analysis method to conduct an empirical study on the factors that affect the team construction of innovation and entrepreneurship mentors in vocational college students. Through the empirical analysis, it is found that the educational level of college students, the guidance level and knowledge level of the tutor team are the main factors affecting the innovation and entrepreneurship ability of college students. In view of the above problems, this paper puts forward the corresponding countermeasures and suggestions from the aspects of improving the quality and level of tutors, expanding international cooperation, expanding the scope of internship, improving entrepreneurship education and strengthening the support in school.
Research on the Collaborative Development of Higher Vocational Education in Chengdu-Chongqing Economic Circle (CCEC) from the Perspective of Curriculum Alliance (CA)

Curriculum is the core element of school teaching work, and efficient curriculum alliance (CA) is of great significance to promote the complementarity and sharing of resources in higher vocational colleges in Chengdu-Chongqing economic circle(CCEC). It should be guided by the strategic alliance theory, build the organizational framework of CA from the aspects of goal vision, member partners, cooperation projects, management institutions, and support conditions, and build an effective alliance operation mechanism from the aspects of development motivation, communication and coordination, and performance evaluation. Due to the fact that vocational education is an open and complex system, promoting the construction of organizational framework and implementation of the operational mechanism of CA of vocational colleges in CCEC requires the coordinated promotion of multiple departments within the system, closely integrating with the local economic and industrial structure, social and cultural development, and promoting the high-quality development of vocational education.
Challenges and Countermeasures of Fragmented Learning to College Mathematics Teaching in the Era of Mobile Internet

The integration of modern information technology and communication technology workers based on the Internet platform into their daily production and life has completely changed the development mode of different industries. At the same time, the field of education is facing an earth shaking change. In the context of the integration of the Internet platform into the education industry, it has also further broken through the limitations of teaching work in terms of time and space, and can realize the expansion and extension of after-school teaching, allowing students to use fragmented time to make learning more efficient. At present, the fragmented teaching mode is also becoming a mainstream form of self-learning. This self-learning mode has greatly mobilized the enthusiasm of students' participation, and has many advantages, such as unlimited time and place, short teaching content, and easy to focus in a short time. It has become a new way for Contemporary College Students to improve their learning efficiency in the context of mobile Internet. However, this fragmented learning mode not only brings convenience to students' learning, but also brings a series of challenges to mathematics teaching in Colleges and universities. Therefore, under the background of opportunities and challenges, how to grasp the fragmented learning form to meet the difficulties and continuously improve the teaching effect of college mathematics has become an important topic that educators should consider. This article mainly analyzes the challenges of fragmented learning for College Mathematics Teaching under the background of mobile Internet, and discusses the coping strategies of College Mathematics for fragmented learning, hoping to provide reference for continuously improving the teaching quality of college mathematics.
Analysis of Classroom Teaching Process Data Based on Intelligent Teaching Evaluation System

Education big data analysis is currently a hot topic of concern in academia. Building on the "Internet + Education" concept, this paper developed a mobile information technology teaching evaluation tool based on WeChat, called the "Intelligent Teaching Evaluation System (ITES)", making it possible for instructors to adopt a hybrid teaching method that combines online and offline teaching by fully utilizing the advantages of mobile internet technology combined with face-to-face teaching. This approach can stimulate students' classroom participation and foster their interest in self-directed learning using mobile devices. The system achieves breakthroughs in university teaching management, homework evaluation and statistics, and post-class Q&A and discussions. At the same time, all teaching-related data can be collected and analyzed to help instructors find the most effective educational methods and strategies to improve teaching effectiveness.
Exploration of the Professional Group Course System of Intelligent Navigation

With the development of intelligent ships, intelligent navigation has become the inevitable choice of the future shipping industry, which will have a profound impact on the navigation education. In order to meet the needs of the cultivation of intelligent navigation talents in the future, it is necessary to timely reform and adjust the training mode and curriculum system of Marine professional group talents. This paper analyzes the changes of intelligent navigation's demand for talents, expounds the types of intelligent navigation positions and their professional abilities, redefines the training objectives of intelligent navigation professional group talents, explores the reform path of the training mode of intelligent navigation professional group talents, and carries out the course deconstruction and reconstruction. This paper puts forward the intelligent navigation major group course system based on the four modules of "artificial intelligence general education", "vocational general education", "core skill training" and "intelligent navigation education", so as to provide reference for the construction of intelligent navigation major.
The Application of Multimedia Technology in Track and Field Training

With the continuous progress of science and technology in China, multimedia technology has been widely applied. In track and field training, the application of multimedia technology can improve training efficiency and accelerate training progress. However, as track and field training is a highly technical event, it is necessary to pay attention to the scientific and reasonable use of multimedia technology when applying it, and play its auxiliary role, otherwise it will affect the efficiency of track and field training. In order to fully leverage the role of multimedia technology, this article will conduct relevant research, analyze the main role of multimedia technology in track and field training, and then analyze the application strategies of multimedia technology in track and field training on this basis, hoping to provide reference assistance.
A Brief Analysis of the Application of Digital Resources to Vocational Colleges

The construction of digital teaching resources is an important means to adapt to the development trend of "Internet + education and teaching" reform, promote the development and sharing of high-quality teaching resources, and promote the comprehensive application of information technology in the process of education and teaching reform and teaching implementation, and it is also an important guarantee for strengthening the construction of digital teaching resources and network teaching. Through the exploration of digital resources, this paper aims to fully learn from the experience of advanced digital teaching resources construction at home and abroad in the process of promoting the construction of digital teaching resources, and encourage teachers to carry out teaching and research on the construction and application of digital resources. It is necessary to fully understand the needs of teachers and students, find problems and study countermeasures; It is necessary to combine the existing information technology application environment of the school to build digital teaching resources suitable for the school, and strengthen the application of digital teaching resources and improve the application ability of digital resources based on resource development, curriculum construction as the core, and the improvement of teachers' teaching ability as the guarantee.
A Study on the Daily Behavior Management of Students in NCO Higher Vocational Academy

In recent years, the education of non-commissioned officers is increasingly important. This study takes the daily behavior management of students in private higher vocational colleges as the theme, and selects 122 students and 5 school office staff as the research subjects. By combing the literature and using questionnaires and interviews, we investigated the current status of paramilitary management of the daily behavior of NCO vocational school students in the camp from six dimensions: daily life management, class management, attendance management, discipline management, order management, and reward and punishment management. The study found that there are many problems in the process of paramilitary management of students. In the face of the problems, how to innovate the talent training mode of NCO Higher Vocational Academy, speed up the reform of the school-running system of NCO Higher Vocational Academy, and enhance the comprehensive quality of students are the key issues to be dealt with urgently in the development of NCO vocational education.
Market impact and efficiency in cryptoassets markets

Abstract We analyze markets for cryptoassets (cryptocurrencies and stablecoins), investigating market impact and efficiency through the lens of the market order flow. We provide evidence that markets where cryptoassets are exchanged between themselves play a central role on price formation and are more efficient than markets where cryptocurrencies are exchanged with the US dollar. For the first set of markets we observe some evidence of the presence of insiders/contrarians, instead in the latter we observe the predominance of herding and trend-followers.