difference

Is Alteryx an ETL tool? How it differs from SSIS? [closed]

由 瘦欲@ 提交于 2019-12-05 17:18:47
Closed. This question is off-topic . It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 3 years ago . My client want me to implement ETL process using Alteryx as they have a license of it. I am confused whether the Alteryx is an ETL tool or not. I believe that Alteryx is commonly used to prepare data for Tableau data visualization tool. Please advise whether its an ETL tool or not? How it differs from SSIS? Thanks, Alteryx is a data preparation / advanced anaytics application. People use it in many different

What is the Difference between CMMI and Agile? [closed]

由 |▌冷眼眸甩不掉的悲伤 提交于 2019-12-05 06:19:27
Is there anyone who can tell me what is the difference between CMMI and Agile. I know some obvious difference, but I want to know it further. I will appreciate it a lot if someone can help me! Thanks! CMMI is a process improvement methodology which aims to take projects or teams from level 1, "chaotic", to a higher level, ideally but not necessarily level 5, "optimising". It consists of various capabilities, each of which is assigned to a specific level. For example, CMM level 2 requires the Project Planning capability. The levels are basically: Chaotic, no real control. Managed, processes at

Time difference within group by objects in Python Pandas

由 强颜欢笑 提交于 2019-12-04 22:53:25
I have a dataframe that looks like this: from to datetime other ------------------------------------------------- 11 1 2016-11-06 22:00:00 - 11 1 2016-11-06 20:00:00 - 11 1 2016-11-06 15:45:00 - 11 12 2016-11-06 15:00:00 - 11 1 2016-11-06 12:00:00 - 11 18 2016-11-05 10:00:00 - 11 12 2016-11-05 10:00:00 - 12 1 2016-10-05 10:00:59 - 12 3 2016-09-06 10:00:34 - I want to groupby "from" and then "to" columns and then sort the "datetime" in descending order and then finally want to calculate the time difference within these grouped by objects between the current time and the next time. For eg, in

Difference between couchbase and couchbase lite? [Previously called as touchDB]

由 ≡放荡痞女 提交于 2019-12-04 13:57:45
What is Couchbase and what is Couchbase Lite? Is there any difference between the two? How could I create couchbase lite in mobile and how could i communicate to a server? Ajith R Nayak Do you happen to know about CouchDB ? I don't know how far apart couchdb and couchbase are at the moment but I think very far. What I've understood so far is, Couchbase, Inc took the couchdb code and decided that they wanted to focus on speed. One of the most difficult parts (speed wise) of couchdb is the synchronisation, so they dropped the synchronisation. Then they began restructuring the code to focus on

What is the Difference Between x:Key, x:Name, and x:UID in a DataTemplate in WPF?

由 99封情书 提交于 2019-12-04 09:56:00
问题 I am trying to create dynamic tabs in WPF, and I'm trying to write a content template that will only apply to some tab items. I want to be able to create an identifier for the content template so that I can reference it in the code behind, and so that I can selectively apply it to only some tabs in a single TabControl. However, I am confused about these three different xaml identifiers. What is the difference, and which one is best for my purposes? 回答1: The 'x:' specifies the namespace, which

What is the difference between a Confusion Matrix and Contingency Table?

由 自作多情 提交于 2019-12-04 09:11:13
问题 I'm writting a piece of code to evaluate my Clustering Algorithm and I find that every kind of evaluation method needs the basic data from a m*n matrix like A = {aij} where aij is the number of data points that are members of class ci and elements of cluster kj . But there appear to be two of this type of matrix in Introduction to Data Mining (Pang-Ning Tan et al.), one is the Confusion Matrix, the other is the Contingency Table. I do not fully understand the difference between the two. Which

Java: what exactly is the difference between NIO and NIO.2?

由 空扰寡人 提交于 2019-12-04 07:29:51
问题 I don't quite understand how different they are from each other so I have some inquiries regarding these two packages. After looking around a bit on Google, it seems like Oracle decided to update the NIO package with the newer and enhanced NIO.2 package as part of the JDK7 release. How does the performance of NIO package compare with the NIO.2 package? What are some big changes from NIO to NIO.2 ? (e.g. new methods, features) Why did the original NIO package have to be updated? Is NIO.2 just

MYSQL - select difference of rows counts in two tables

由 泪湿孤枕 提交于 2019-12-04 06:20:59
问题 I am trying to compare number of rows of two tables in two databases. The number of rows should be the same : SELECT (SELECT COUNT(*) FROM db1.table1)- (SELECT COUNT(*) FROM db2.table1) AS difference How do i select only if difference<>0? I need to run this for multiple tables and i don't need 0 values. I could load results in C# list and sort it out but i'd like to finish all in query. I've tried using information_schema.TABLES for this but it's not suitable because it returns approximate

Build difference between groups with dplyr in r

由 安稳与你 提交于 2019-12-04 01:26:44
问题 I am using dplyr and I am wondering whether it is possible to compute differences between groups in one line. As in the small example below, the task is to compute the difference between groups A and Bs standardized "cent" variables. library(dplyr) # creating a small data.frame GROUP <- rep(c("A","B"),each=10) NUMBE <- rnorm(20,50,10) datf <- data.frame(GROUP,NUMBE) datf2 <- datf %.% group_by(GROUP) %.% mutate(cent = (NUMBE - mean(NUMBE))/sd(NUMBE)) gA <- datf2 %.% ungroup() %.% filter(GROUP

what is the usage of HTML5 figure with img

由 时光怂恿深爱的人放手 提交于 2019-12-03 10:30:17
问题 Is there any specific advantage/usage of using HTML5 <figure> over <img>? I think <figure> is useless without <figurecaption>, isn't it? It will be helpful if explain with an example. 回答1: Images are not technically inserted into an HTML page, images are linked to HTML pages. The <img> tag creates a holding space for the referenced image. While the content of the <figure> element is related to the main flow, its position is independent of the main flow, and if removed it should not affect the
订阅 difference