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The globally central clustering algorithms, such as k-means and spectral clustering, often suffer from the problem of local optima and difficulty in parameter setting with overlapping and adhesive clusters in the data distribution, which might greatly limits the effectiveness of globally central clustering algorithms in practical applications. To address this issue, a border-peeling inspired globally central clustering algorithm was proposed. Firstly, a one-step border peeling method was designed, which defines a locally distance-weighted density according to the reverse k-nearest neighbor relationships between sample points. The density value at the maximal point of the first-order difference of the density empirical distribution function was utilized as the threshold to divide the dataset into boundary and core sets. Then, the traditional globally central clustering algorithms were embedded to cluster the core set. Benefiting from the significant improvement in the overlapping of the core set, the embedding algorithms could converge to the true cluster centers easily. Finally, a boundary attraction algorithm was proposed, which could progressively amalgamate sample points from the boundary set, utilizing existing reverse k-nearest neighbor relationships, and commencing from the already categorized core set sample points. Compared with the currently iterative border peeling algorithms, the proposed algorithm had significant advantages in computational efficiency. There was no additional complex termination conditions but only direct performs boundary partitioning using a threshold. Furthermore, the global approach also exhibited stronger robustness local data densities were different. In the experimental phase, three synthetic datasets and six real-world datasets were used to evaluate the algorithm's performance, parameter sensitivity, and time consumption, further validating the efficacy and practicality of this algorithm. [ABSTRACT FROM AUTHOR]

Copyright of Railway Construction Technology is the property of Railway Construction Technology Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Petroleum Refinery Engineering is the property of Petroleum Refinery Engineering Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Wool Textile Journal is the property of National Wool Textile Science & Technology Information Center and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Overlapped onomatopoetic words can be used as a modal complement or a degree complement in modern Chinese. When used as a modal complement, it has fewer syntactic expressions and free syntactic changes with semantic features such as continuity and loud volume ; when used as a degree complement, it can only be complement and has adhesivity with virtual semantics. Onomatopoeic complements can enhance the speechs mood and vividness and have the function of synaesthesia, mainly used in novels, crosstalk and other discourse literary works. Driven by contextual influence and metaphorical mechanism, the semantic of overlapped onomatopoetic words are generalized and grammaticalized. Consequently, its descriptive meaning is weakened while the degree meaning is prominent so as to derive a function of expressing high degree from the original expression of modality. [ABSTRACT FROM AUTHOR]

The activity overlapping in new product R&D project is an important approach to shorten project duration, but overlapping might lead to rework risk and take additional time and resources consumption. Therefore, the dependency structure matrix (DSM), preceding overlapping activity time factor DSM, succeeding overlapping activity time factor DSM and overlap impact matrix are proposed respectively to describe the natural overlapping, forced overlapping and the influence of duration and resource due to overlapping rework. A resource-constrained project scheduling optimization model with overlapping activities is built, and an improved genetic algorithm is presented to solve the model based on priority rules and schedule generation mechanism with overlapping. An instance is studied and the results indicate that the model not only can shorten project duration, but also realize the balance of resources. Finally, application of the algorithm to examples of different sizes and nature demonstrates the validity of the algorithm. [ABSTRACT FROM AUTHOR]