A Activity diagram used in UML 6/9 and SysML B Bachman diagram Booch used in software engineering Block diagram Block Definition Diagram BDD used in SysML C Carroll diagram Cartogram Catalytic cycle Chemical equation Curly arrow diagram Category theory diagrams Cause-and-effect diagram Chord diagram Circuit diagram Class diagram from UML 1/9 Collaboration diagram from UML 2.0 Communication diagram from UML 2.0 Commutative diagram Comparison diagram Component diagram from UML 3/9 Composite structure diagram from UML 2.0 Concept map Constellation diagram Context diagram Control flow diagram Contour diagram Cordier diagram Cross functional flowchart D Data model diagram Data flow diagram Data structure diagram Dendrogram Dependency diagram Deployment diagram from UML 9/9 Dot and cross diagram Double bubble map used in education Drakon-chart E Entity-Relationship diagram ERD Event-driven process chain Euler diagram Eye diagram a diagram of a received telecommunications signal Express-G Extended Functional Flow Block Diagram EFFBD F Family tree Feynman diagram Flow chart Flow process chart Flow diagram Fusion diagram Free body diagram G Gantt chart shows the timing of tasks or activities used in project management Grotrian diagram Goodman diagram shows the fatigue data example: for a wind turbine blades H Hasse diagram HIPO diagram I Internal Block Diagram IBD used in SysML IDEF0 IDEF1 entity relations Interaction overview diagram from UML Ishikawa diagram J Jackson diagram K Karnaugh map Kinematic diagram L Ladder diagram Line of balance Link grammar diagram M Martin ERD Message Sequence Chart Mind map used for learning, brainstorming, memory, visual thinking and problem solving Minkowski spacetime diagram Molecular orbital diagram N N2 Nassi Shneiderman diagram or structogram a representation for structured programming Nomogram Network diagram O Object diagram from UML 2/9 Organigram Onion diagram also known as "stacked Venn diagram" P Package diagram from UML 4/9 and SysML Parametric diagram from SysML PERT Petri net shows the structure of a distributed system as a directed bipartite graph with annotations Phylogenetic tree - represents a phylogeny evolutionary relationships among groups of organisms Piping and instrumentation diagram P&ID Phase diagram used to present solid/liquid/gas information Plant Diagram Pressure volume diagram used to analyse engines Pourbaix diagram Process flow diagram or PFD used in chemical engineering Program structure diagram R Radar chart Radial Diagram Requirement Diagram Used in SysML Rich Picture R-diagram Routing diagram S Sankey diagram represents material, energy or cost flows with quantity proportional arrows in a process network. Sentence diagram represents the grammatical structure of a natural language sentence. Sequence diagram from UML 8/9 and SysML SDL/GR diagram Specification and Description Language. SDL is a formal language used in computer science. Smith chart Spider chart Spray diagram SSADM Structured Systems Analysis and Design Methodology used in software engineering Star chart/Celestial sphere State diagram are used for state machines in software engineering from UML 7/9 Swim lane Syntax diagram used in software engineering to represent a context-free grammar Systems Biology Graphical Notation a graphical notation used in diagrams of biochemical and cellular processes studied in Systems biology System context diagram System structure Systematic layout planning T Timing Diagram: Digital Timing Diagram Timing Diagram: UML 2.0 TQM Diagram Treemap U UML diagram Unified Modeling Language used in software engineering Use case diagram from UML 5/9 and SysML V Value Stream Mapping Venn diagram Voronoi diagram W Warnier-Orr Williot diagram Y Yourdon-Coad see Edward Yourdon, used in software engineering
不同的地方不一样，比如时间复杂度中的 O (\log x) 是不考虑底数，有时是默认 e 为底，比如在 分步求导工具 和 MATLAB；在计算机上也会用 2 为底；国内也有很多以 10 为底。 总之，问老师。
不仅如此，这个标准还特别强调： log (x) 不能被用来表示这三种里任何一种对数。 类似地，国内也有一个标准，叫《物理科学和技术中使用的数学符号》。 这个标准的第2.7节规定了类似的内容。 那么既然有标准，为什么这两个标准没有得到执行呢？ 有两个原因。
计算机是如何计算 log 函数的？ 就是比如已知一个实数（或者复数）k，求其 log (base n)。 想知道具体算法以用于简化一些修正算法。 显示全部 关注者 486 被浏览
以上的方法在编制对数表时得到了充分的应用： 有哪些手算对数的方法？ 2 利用反正切函数与对数函数的关系，使用欧拉反正切公式加快收敛。待研究，可参考以下资料： 瑞士著名数学家欧拉于1755年发现的关于反正切函数的无穷级数展开公式怎么证明？ 欧拉反正切公式的一个新证明：A new proof of ...
C盘清理，log数据文件可以删吗? c盘senseshield文件中的log数据占了50多g这个是有什么用的，可以删除吗？ 希望有大神回答一下谢谢啦 [图片] 显示全部 关注者 7 被浏览
对于他们来说，平时使用的 lg 和 log 是一样的。 更进一步地，有人会把ln错误地写成（和读成）log，谢天谢地，这个终于都认为是写错了 国内ln大部分的读法应该都是连起来的或按字母读的，在可能有歧义时才会加上“自然”， lg连起来读的话，可能会和log混淆。为了避免歧义，说成“以10为底的 ...
log是logarithm，ln是natural logarithm，那lg呢？
没记错的话应该是2， 交叉熵 是从 信息论 的熵来的，信息论里面计算机表达信息都是0 1这样二进制表达的，log_2 (P)就是代表表达这个信息需要二进制多少位，加前面一个p就是用概率加权而已。
1. log in是计算机专用词组，而sign in一般多用于生活中； 2. sign in的本意并与登录不完全相同，更表示签到和登记（在计算机世界里与QQ空间或者其他应用里的每日签到更类似）； 3. 在实际语言的运用过程中，sign in的意义可能被延伸到计算机及网络应用的「登录」 ...
Log P是指在某一特定pH下，化合物在两相中全部以分子形式存在，测得化合物在有机相和水相中分配系数的对数。 Log D是指在某一pH环境下，化合物以分子和离子形态在有机相和水相中分配系数的对数 [3]。 一般来说，Log P及Log DpHx的值越大表示化合物亲脂性越强。
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