最近鄰域 的英文怎麼說
中文拼音 [zuìjìnlīnyù]
最近鄰域
英文
nearest neighbor-
As an important component of the above researches, this paper covers following aspects : ? firstly, product design theories are summarized, status and development trend of machinery product design are analyzed, and application of knowledge based design method in machinery product design is put forward. ? kbe ( knowledge based engineering ) theories such as knowledge acquisition, representation and storage are discussed, kbe concept is integrated with ug secondary development technology, and design knowledge is induced and stored to establish the design knowledge base. ? product case representation is researched, a hierarchical tree type product case library for complex products is established, retrieve strategy for cases of the nearest filed is put forward and corresponding algorithm is given
本文的主要研究內容及成果如下: ?對產品設計理論和方法進行了總結和概括，分析了機械產品設計的現狀和發展趨勢，將基於知識的設計方法應用到機械產品的設計中; ?研究了知識獲取、表達、存儲等kbe理論，並將kbe思想應用到ug二次開發中，將設計知識歸納存儲，建立了設計知識庫; ?研究了產品實例表示，建立了復雜產品層次樹狀產品實例庫，介紹了最近鄰域實例檢索策略並給出相應的演算法; ?研究了基於知識重用的三維產品建模技術，研究了在設計過程中的設計資源的重用，計算過程的重用，計算數據的重用，推理過程的重用等等;介紹了基於設計重用的凸輪三維模型的實現方法。The search space is divided into many small areas, and each area is given a certain pheromone value. according to the state transition rules, the artificial ants move to the next solution which is generated randomly or calculated by particle swarm optimization. local search strategy is also added into psaco so that the search speed and precision is enhanced
該演算法首先將連續對象定義域平均分成許多邊緣相互重疊的小區域，區域的稠密程度決定了演算法解的精度，每個區域賦予一定的信息素值;螞蟻根據狀態轉移規則在隨機生成的可行解與利用微粒群演算法得出的可行解之間選擇下一步要去的位置;引入局部尋優策略，加強近似最優解鄰域內的局部搜索，提高搜索速度和精度。423 persons answered the questionnaires and 139 out of them were identified as ecotourists. the result of classification is proved to be effective by prediction validity test, content validity test, theory validity test and convergence validity test. in addition, the ecotourists were classified as hard ecotourists, frequent ecotourists and occasional ecotourists farther according to the times they traveled to nature - based destinations every year and their new ecological paradigm grade which is used to evaluate the visitors attitude to environment. frequent ecotourists and occasional ecotourists both fall category of soft ecotourists, so the " hard - soft " classification system is founded, which will help propel ecotourist studies in china to develop towards the current international mainstream of the field
以北京市百花山自然保護區為例，在總結國外相關研究經驗的基礎上，採用k階最近鄰knn和反向傳播bp前饋型多層神經網路所構成的綜合分類器對百花山遊客中的生態旅遊者進行識別，又根據「每年去相對原始的自然區域的旅遊次數」和環境態度尺度nep得分兩項指標將生態旅遊者進一步細分為嚴格的生態旅遊者經常的生態旅遊者和偶爾的生態旅遊者，其中經常的生態旅遊者和偶爾的生態旅遊者歸為一般的生態旅遊者，從而構建起嚴格的一般的生態旅遊者分類體系。Time delay was chosen by using autocorrelation function method and mutual information method, while reconstruct dimension was obtained by g - p saturation correlation dimension method and false nearest neighbor percentage method. furthermore, initial neighborhood radius was computed by the estimated noise level based on the g - p saturation correlation dimension method. secondly, a noise reduction of the inflow time series was carried out by chaotic nonlinear local projection noise reduction method, and the effects on noise to chaotic characteristics and state reconstruction parameters were discussed
採用g - p關聯維法計算關聯維數； rosenstein法和kantz法計算最大lyapunov指數；重構相空間的延遲時間採用了自相關函數法和互信息量法；嵌入維數採用了飽和關聯維法和偽鄰近點法；初始領域半徑的選取採用了基於g - p關聯維法的噪聲水平的初始估計方法。We using the triangulation constructed from the point ' s adjacent field, which is the nearest to the original local surface, to compute the point ' s normal. it can get a good result
本文採用了與局部曲面片最接近的由點的鄰域所構造的三角片來近似求點的法向量的方法，得到了較好的實驗結果。Based on the characteristics of the quaternary tectonic activities of babaoshan - huangzhuang - gaoliying fault and the regional principal compressional stress direction and regional tectonic activities derived from the recent cross - fault displacement observation data in the capital area, we have analyzed the relationship between the fault movements at 7 cross - fault observation sites on the babaoshan - huangzhuang - gaoliying fault and the seismicity, conclude that the capital and adjacent area is soon to enter upon the next active period of earthquakes
摘要根據八寶山黃莊高麗營斷裂第四紀地質構造活動特徵和利用首都圈地區跨斷層位移最新的觀測資料求得的北京地區區域主壓應力方向和區域構造活動特徵，分析了八寶山黃莊高麗營斷裂上7處跨斷層位移測點的斷層活動與地震活動的關系，得出了首都圈及鄰近地區即將進入下一個地震活躍期的結論。The classifier with ability of feature selection is studied to prepare for face cascade representation and to make it possible to detect and recognize face fast and accurately. finally, construction of an array of classifiers is researched, and an effective method to design classifiers of fast face detection and recognition with complex background is presented, which is able to radically discard redundant areas and realize a robust real - time face detection designed for complex background and recognition system with large face database. finally, a fast face detection and recognition system for images with complex background is proposed and implemented by combining face cascade representation and classifier design
首先研究了在人臉檢測和識別中常用的分類器，比如符號函數、最近鄰、神經網路、 svm 、 adaboost等，選擇了適合於人臉檢測和識別的分類器，並提出了結合pca特徵和rbf進行人臉姿態的判別方法：其次研究了具有特徵選擇功能的分類器發計，這為人臉的級聯表示提供了條什，也為快速準確的人臉檢測和識別提供了可能；最後，對組合分類器設計進行了研究，提出了適于復雜背景下快速人臉檢測和識別的有效分類器設計方案，這使得人臉檢測和識別能夠快速剔除不感興趣區域，為復雜背景下實時人臉檢測和大型人臉庫的快速識別提供了可能。2. it establishes the distance valve value model of interactions between different tourism regions, and concludes that distance being the crucial factor that decides the nature and degree of tourism spatial competition among regions. 3. it introduces a new concept concerning spatial competition - " tourism resource assembling shield ". then by comprehensive utilization of the following six kinds of analytic techniques - index r, index 3, index y. accessibility index, average directory length and intensity index, it makes a relatively comprehensive analysis and evaluation of the spatial distribu
3 、提出「旅遊資源集聚屏蔽」的空間競爭概念，並綜合運用最近鄰指數r 、 p指數、 y指數、通達度指數、平均徑路長、緊密度指數6種分析技術，對皖南旅遊資源的空間分佈形態以及空間網路結構的連接性、通達性等進行了較為全面的分析和評價，指出旅遊資源網路空間結構特徵影響旅遊區域空間競爭。Based on tabu search, a local search technique with changeable local structure ( algorithm 2 ) is proposed for this np - hard problem, which provides an approach to control the optimizing process flexibly
基於tabu搜索設計了變鄰域結構的局部搜索技術，提供了靈活控制尋優過程的途徑;全多項式時間復雜性近似策略的開發，使得0一1背包問題的求解成為了n戶c問題近似演算法設計中最為成功的範例。The main idea of this hybrid algorithm is : at first, all candidates in task collection is lined according to a dispatching rule ( earliest due date, edd ), then this linear queue is divided into some tiers under a criterion that partial order is not allowed to exist in the every tier, many feasible sequences is generated by constructing a neighborhood of a initial sequence in every tier, the allocation of the resources over time is conducted to perform every feasible task sequence, and a set of approximate optimal scheduling schemes is achieved as the precondition of the next tier ’ s disposal in meeting multiple scheduling objectives to obtain the global near - optimal schedule which makes these program run tier by tier until the last task is completed
該演算法按照最早完工時間優先（ ect ）分派規則，先將參加排序的工序合併成一個串列序列，然後按照同層內不存在偏序關系的原則，將其分解為若干個時間上相互銜接的層次，在每個層次內部，通過構造鄰域產生出多個可行序列，對每個可行序列進行設備配置，採用鄰域搜索演算法進行方案的尋優，保留一組滿足評價要求的可行方案作為下一層設備配置的背景環境，通過層層遞進最終獲取全局的近似最優解。2 xu j, zheng b, lee w - c, lee d l. d - tree : an index structure for planar point queries in location - based wireless services. ieee trans. knowledge and data engineering tkde, 2004, 16 : 1526 - 1542
在本文中，作者提出了一種基於廣播的位置相關數據發布機制，其目標是減少最近鄰居查詢nearest neigbour query和區域查詢range query的協調時間和訪問時間。The ability to search the neighbor - area of the best solution of half - determined ga is improved with three new strategies : half determined hamming - decreasing, low bit determined mutation and self - adaptive scaling of design variables
後者利用半確定性的變異操作， hamming - decreasor ，設計變量的自適應定標這三項措施對當前最優個體的鄰近區域的集中搜索來提高演算法的局部搜索能力。17 song m, park k, ryu j, hwang c. modeling and tracking complexly moving objects in location - based services. journal of information science and engineering, 2004, 20 : 517 - 534. 18 roussopoulos n, kelley s, vincent f. nearest neighbor queries
基於這種數據組織方法，作者提出了一種數據預提取prefetching機制，並通過相應的優化演算法，有效地提高了最近k個鄰居查詢k - nn查詢和區域查詢處理的效率。A method based on fuzzy equivalence relation is applied to implement target classification and a synthetic algorithm is presented to fulfill multi - layer structure among groups by using the nearest - neighbor method and field knowledge
應用基於模糊等價關系的方法實現目標編群，並提出一種基於域知識和最近鄰法相結合的演算法來實現群結構遞增形成的策略。分享友人