排序方式： 共有117条查询结果，搜索用时 15 毫秒
51.
《Information processing & management》2023,60(3):103301
Hashing has been an emerging topic and has recently attracted widespread attention in multi-modal similarity search applications. However, most existing approaches rely on relaxation schemes to generate binary codes, leading to large quantization errors. In addition, amounts of existing approaches embed labels into the pairwise similarity matrix, leading to expensive time and space costs and losing category information. To address these issues, we propose an Efficient Discrete Matrix factorization Hashing (EDMH). Specifically, EDMH first learns the latent subspaces for individual modality through matrix factorization strategy, which preserves the semantic structure representation information of each modality. In particular, we develop a semantic label offset embedding learning strategy, improving the stability of label embedding regression. Furthermore, we design an efficient discrete optimization scheme to generate compact binary codes discretely. Eventually, we present two efficient learning strategies EDMH-L and EDMH-S to pursue high-quality hash functions. Extensive experiments on various widely-used databases verify that the proposed algorithms produce significant performance and outperform some state-of-the-art approaches, with an average improvement of 2.50% (for Wiki), 2.66% (for MIRFlickr) and 2.25% (for NUS-WIDE) over the best available results, respectively. 相似文献
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智莹 《鞍山师范学院学报》2008,10(4)
总结了创新设计思维的两项原则:最短路径原则与相似性联想原则.分析了基于实例推理技术当前研究的不足并提出用遗传算法进行组合优化来解决.介绍了基于web的创新设计知识库,提出了功能要求、作用原理及物理结构的相似性的量化方法,用相似度作为计算机辅助联想及遗传算法初始群体筛选的依据,形成一种改进的遗传算法.基于上述理论开发了基于web的机械产品计算机辅助创新设计系统. 相似文献
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类比推理是法律推理的重要形式,它不仅涉及到逻辑问题,而且涉及到心理学问题。类比推理具有超越法系的穿透力,在大陆法系、英美法系以及中华法系的法律适用中都非常重要。一方面,类比推理满足了人们追求“相同案件相同处理”的法治原则的需要,是实现“实质法治”的“第二好的方法”;另一方面,由于类比推理缺乏一个足够科学的、客观的理论基础,过度地依赖于直觉,因此,也存在一定的缺陷。法律中适用类比推理的关键是寻找到相类比事物之间的相似性,相似性的问题不是一个简单的逻辑问题,而是一个“合目的性”的问题。 相似文献
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借代和借喻是英汉语中两种重要的修辞格，由于二均涉及词义的转化，因此两种辞格容易混淆。本指出了借代和借喻是两个不同的概念，阐述了借代和借喻的不同类型，在此基础上，本从两所构成的客观基础，两中本体和借体，喻体的关系，两的转换方法和表达效果四个方面分析了两的不同之处。 相似文献
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中国古代的典型推理方法叫推类或类推。要解读"推类",唯有从中国古代"类"的观念入手,考察中国古代"‘类’的观念"的基本内容,包括"类同观"、"类别观"、"类法则观"、"类同理同观"、"类整体观",比较了中国古代"类"的观念与西方"类"概念的差异,就能说明中西推理类型或逻辑类型的不同。 相似文献
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《我是猫》与《狂人日记》表现手法之比较 总被引：1，自引：0，他引：1
章小叶 《福建师大福清分校学报》2006,(1):63-66,75
通过夏目漱石的《我是猫》与鲁迅的《狂人日记》这两部作品在艺术构思、批判现实主义、叙述者的选择三方面的相似比较,又通过对鲁迅对整个外国文学的态度进行历史性、概括性的考察,以及鲁迅在创作《狂人日记》前是否读过夏目漱石的《我是猫》的考察,从而提出鲁迅在写《狂人日记》时,在艺术构思、批判现实主义及叙述者的选择上是很有可能受到夏目漱石的《我是猫》的影响与启发。 相似文献
57.
受不同民族文化诸多因素的影响,中西方植物的象征意义异大于同,但从其所赋予象征意义的植物来看,中西方民族赋予植物象征意义的思维方式, 除了谐音差异外,在其它方面有着很大的相似性. 相似文献
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In the last several decades it has become an important basis to retrieve images from image databases (IDBs) by the semantic information held in the image objects and the spatial patterns formed by these objects. In this paper, we propose a new method for similarity retrieval of symbolic images by both the attributes and the spatial relationships of the contained objects. The proposed method CPM (common pattern method) retains the common spatial patterns of two images in new data structures CP_DAG (common pattern directed acyclic graph) and performs the similarity calculation efficiently in practice. The conducted experiments use both a synthetic dataset and an existing image database. The experimental results show that CPM outperforms LCS_Clique, SIMR, SIMDTC, and 2D Be-string for average efficiency and effectiveness. CPM also has steady efficiency while the number of image objects and the object symbol duplication rates increase. 相似文献
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比字句除了通常的比较作用,还可以有描绘和强调两种功能。描绘是显示主体与一个异类事物有相同性并超过它的意义,强调则是显示主体的某种属性在全体同类之中为第一。比字句的这两种不同的意义都可以从视点的特殊性得到解释,它们不是用于比较的性质也可以由一些方法测试出来。 相似文献