modeling

How to implement automatic model determination and two state model fitting in python?

由 纵然是瞬间 提交于 2019-12-02 03:31:54
问题 Currently, I've been doing model fitting in Prism manually for all my data. It's quite tedious and time consuming. I wonder if there is any way to improve the efficiency in data analysis. I'm familiar with Python so I'd like to start with python to think of a better workflow. Your help is much appreciated. Two questions: How to do two state model fitting in python (figure 1)? In my case, it will has an initial linear increase followed by horizontal plateau state. I wish to the way of

Is there an advantage to ordering a categorical variable?

由 ぐ巨炮叔叔 提交于 2019-12-02 03:10:06
问题 I have been advised that it is best to order categorical variables where appropriate (e.g. short less than medium less than long). I am wondering, what is the specific advantage of treating a categorical variable as ordered as opposed to just simple categorical, in the context of modelling it as an explanatory variable? What does it mean mathematically (in lay terms preferably!)? Many thanks! 回答1: Among other things, it allows you to compare values from those factors: > ord.fac <- ordered(c(

Is there an advantage to ordering a categorical variable?

由 僤鯓⒐⒋嵵緔 提交于 2019-12-02 01:20:29
I have been advised that it is best to order categorical variables where appropriate (e.g. short less than medium less than long). I am wondering, what is the specific advantage of treating a categorical variable as ordered as opposed to just simple categorical, in the context of modelling it as an explanatory variable? What does it mean mathematically (in lay terms preferably!)? Many thanks! Among other things, it allows you to compare values from those factors: > ord.fac <- ordered(c("small", "medium", "large"), levels=c("small", "medium", "large")) > fac <- factor(c("small", "medium",

How to generate Java from online UML models?

由 自作多情 提交于 2019-12-01 18:45:27
I need to create UML class diagram online and to generate Java code from it. Drawing tools such as cacoo don't allow to generate code as they are not real UML modelers. Does anybody know an UML online tool that generates Java code? Thanks for your help~~ You should take a look at GenMyModel an UML online tool GenMyModel allows you to create an UML class diagram online and generate Java code from it. There is one generator that allows you to produce Java source code from a UML model. This module uses the standard UML2 metamodel provided by Eclipse Foundation and as such is compatible with any

Using UML for C programming

由 依然范特西╮ 提交于 2019-12-01 09:41:48
问题 I'm developing an embedded software based on standard specification. The software is big and I need a design of my software before start coding. the UML is an object-oriented language and could be a solution but I don't know how to use it for C softwares. are there any document which help to use UML for C programming ? or are there another design language for c softwares ? 回答1: Yes, you can, mostly because of two reasons: You can actually do Object Oriented Programming with C (although it is

Error in predict.svm: test data does not match model

由 非 Y 不嫁゛ 提交于 2019-12-01 09:40:13
I have a data frame of about 500 rows and 170 columns. I am attempting to run a classification model with svm from the e1071 package. The classification variable is called 'SEGMENT', a factor variable with 6 levels. There are three other factor variables in the data frame, and the rest are numeric. data <- my.data.frame # Split into training and testing sets, training.data and testing.data . . . fit <- svm(SEGMENT ~ ., data = training.data, cost = 1, kernel = 'linear', + probability = T, type = 'C-classification') The model runs fine. Parameters: SVM-Type: C-classification SVM-Kernel: linear

Error in predict.svm: test data does not match model

由 非 Y 不嫁゛ 提交于 2019-12-01 07:49:57
问题 I have a data frame of about 500 rows and 170 columns. I am attempting to run a classification model with svm from the e1071 package. The classification variable is called 'SEGMENT', a factor variable with 6 levels. There are three other factor variables in the data frame, and the rest are numeric. data <- my.data.frame # Split into training and testing sets, training.data and testing.data . . . fit <- svm(SEGMENT ~ ., data = training.data, cost = 1, kernel = 'linear', + probability = T, type

Need a tool for visualizing ant execution flows and properties

由 牧云@^-^@ 提交于 2019-12-01 04:51:50
问题 I'm trying to figure out how the DITA Open Toolkit performs DITA to XHTML conversions, and it's difficult since the process is managed by dozens of ant targets spread over multiple ant files. I need a tool that can provide a visualization of the execution flow plus property dependencies of an ant invocation. VizAnt and Grand only graph target invocations, so I'm looking for something heavier-duty. Ideally, such a tool would identify the order of target invocations, as well as property values

UML Use Cases: how to model a “batch” feature?

由 你说的曾经没有我的故事 提交于 2019-12-01 01:02:30
Should a batch scheduled process (for example, a nightly process) be modeled as a Use Case? it is something the system should do, but there is not an Actor "using" the feature, because it is scheduled. Any suggestions? Thanks! We've defined a 'Scheduler' actor to model that scenario. The Scheduler usually has its own set of use cases which are batch jobs, or executables that need to run regularly, etc. For example, the Use Case can be written like "The Use Case begins when the current time is on the hour" for a job that runs 24 times a day. We try not to include too many of these cases because

3D model format for games

由 ↘锁芯ラ 提交于 2019-12-01 00:23:20
I've looked around for a good model format to use in a game I'm building. Its a single player RPG that runs on any platform. I looked at md2,3, and 5 formats, obj, and 3ds, but I couldn't really find what I was looking for. All I need is a 3d model with animation that I can apply textures to. I know most of the list above does that. All I'm looking for is opinions on which one is better/easier to work with. Thanks The .ply format is simple and not too hard to code an interpreter for if you like the whole DIY experience. The Stanford 3D Scanning Repository has a bunch of .ply files you can
订阅 modeling