The practice of “two-term eight-period per week” in college English teaching is carried out according to the diversity of higher vocational students and the differences of their English levels at polytechnics.In the actual teaching process,attention should be paid to the problems of generalized organization.Furthermore,such problems arising from “management”,“similarities” and “relation between teaching and learning” should attract teachers’ attention and concern in the course of “teaching according to levels”.
A new clustering algorithm-STC-I-of Chinese web document based on STC is given. The algorithm not only reduces the high dimension of documents by getting rid of the synonymous and similar words but also marks the documents by computing the similarity between the for retrieval and documents. The results that comparing STC-I with STC, AHC and k-means algorithms from the accuracy of clustering and complexity of time show that STC-I is better than STC, AHC and k-means.
Building on VeriX (Verified eXplainability, arXiv:2212.01051), a system for producing optimal verified explanations for machine learning model outputs, we present VeriX+, which significantly improves both the size and the generation time of verified explanations. We introduce a bound propagation-based sensitivity technique to improve the size, and a binary search-based traversal with confidence ranking for improving time -- the two techniques are orthogonal and can be used independently or together. We also show how to adapt the QuickXplain (Junker 2004) algorithm to our setting to provide a trade-off between size and time. Experimental evaluations on standard benchmarks demonstrate significant improvements on both metrics, e.g., a size reduction of 38% on the GTSRB dataset and a time reduction of 90% on MNIST. We also explore applications of our verified explanations and show that explanation size is a useful proxy for both incorrectness detection and out-of-distribution detection.
Previous neuroimaging studies have revealed abnormal brain networks in patients with major depressive disorder (MDD) in emotional processing. While any cognitive task consists of a series of stages, little is yet known about the topology of functional brain networks in MDD for these stages during emotional face recognition. To address this problem, electroencephalography (EEG)-based functional brain networks of MDD patients at different stages of facial information processing were investigated in this study. First, EEG signals were collected from 16 patients with MDD and 18 age-, gender-, and education-matched normal subjects when performing an emotional face recognition task. Second, the global field power (GFP) method was employed to divide group-averaged event-related potentials into different stages. Third, using the phase transfer entropy (PTE) approach, the brain networks of MDD patients and normal individuals were constructed for each stage in negative and positive face processing, respectively. Finally, we compared the topological properties of brain networks of each stage between the two groups using graph theory approaches. The results showed that the analyzed three stages of emotional face processing corresponded to specific neurophysiological phases, namely, visual perception, face recognition, and emotional decision-making. It was also demonstrated that depressed patients showed abnormally decreased characteristic path length at the visual perception stage of negative face recognition and normalized characteristic path length in the stage of emotional decision-making during positive face processing compared to healthy subjects. Furthermore, while both the MDD and normal groups’ brain networks were found to exhibit small-world network characteristics, the brain network of patients with depression tended to be randomized. Moreover, for patients with MDD, the centro-parietal region may lose its status as a hub in the process of facial expression identification. Together, our findings suggested that altered emotional function in MDD patients might be associated with disruptions in the topological organization of functional brain networks during emotional face recognition, which further deepened our understanding of the emotion processing dysfunction underlying MDD.
This paper advocates the conceptof new urbanism,which claims the restoration of existing urban centres and towns in the transformation of the old cities,and diversity and humanity of the neighbourhood,protection of natural environment and cultural heritage.This paper also analyzes the present situation of the large-scale transformation of the old cities with some examples,and puts forward that new urbanism with Chinese characteristics should be used to the transformation of the old cities.
Starting from the characteristics of oral English, teaching oral English, this paper analyzes the features, types and functions of teaching oral English, and points out that teaching oral English play a very important role in providing the information of knowledge, developing the students' intelligence, organizing the classroom activities and improving the quality of teachers.
Quality-oriented education has got a staged success with some dated factors in college English teaching.This paper analyzes effective approaches of reform and innovation in quality-oriented education of college English teaching with quality-oriented and innovative concept.
This paper is going to answer the question of how to apply Joomla! framework in the extension and exploration of Web system. It is based on some discussions on design,technology,and expansion of component extension. Detailed explanation of the application of Joomla! framework in extension and exploration of Web system will be made through analysis of expert question-answering component extension and exploration of an English website.
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