disadvantages of esop

clusters K is an input parameter, the inappropriate k value may return poor results? application areas: image segmentation, analysis of commodity similarity to classify commodities, analysis of the company's customer classification to use different business strategiesStatistical learning--em? Core idea: maximize expectations with e-steps and M-Steps? Algorithm Advantages: Simple and stable? algorithm disadvantage: iterative speed is slow, many times, easy to fall into the local optimal? applica

any time, do not require the developer to do the precise processing, so, excessive use of the session variable will cause the code unreadable and poorly maintained.Although "You can use the session variable directly at any time you want to use it, rather than declaring it in advance, this approach is similar to the use of variables in VB." After you have finished using it, you do not have to consider releasing it, as it will automatically release ". But, "who" thinks of it? What does the variab

Now many websites have used the div+css to layout the webpage structure, the advantage is the speed is fast, may the negative influence, see below analysis Front-End time to write a "use of CSS framework for efficient site development", a lot of friends asked me related questions. Very early 5key in the company for the framework of CSS frameworks, but also to many friends of the proposed CSS framework. The effect is very obvious. Of course, the CSS framework has advantages and

This blog is reproduced from a blog post, introduced Gan (generative adversarial Networks) that is the principle of generative warfare network and Gan's advantages and disadvantages of analysis and the development of GAN Network research. Here is the content. 1. Build Model 1.1 Overview Machine learning methods can be divided into generation methods (generative approach) and discriminant methods (discriminative approach), and the models learned are c

Hello everyone, today to share with you the pros and cons of free space problem. Now a lot of domain name business host space vendors in vigorously promote the free things. So how much do you know about the free stuff? Everyone knows you can get it without money. But you only see the surface, do not see the inner side, think about it, the General people will give you free of what the concept, others can not lose money to you on the free throw, for you to use it. Once heard an old-timer said a wo

the client, the use of idle client capacity to deal with, reduce the burden of server and bandwidth, save space and broadband rental costs. and reduce the burden on the server, the principle of Ajax is "on-demand data", can minimize redundant requests, and respond to the burden on the server. 4, based on standardized and widely supported technology, do not need to download plug-ins or small programs. 7, the disadvantages of Ajax Here's what I'll f

Front-End time to write a "use of CSS framework for efficient site development", a lot of friends asked me related questions. Very early 5key in the company for the framework of CSS frameworks, but also to many friends of the proposed CSS framework. The effect is very obvious. Of course, the CSS framework has advantages and disadvantages, and recently read some related articles. Some thoughts, share with you. The benefits of CSS frameworks: 1, the dev

advantages and disadvantages of sequential tables and linked list storage 1. Sequential table Storage Principle: Sequential table storage is to put data elements into a contiguous memory storage space, access efficiency, fast. But you can't increase the length dynamically. Advantages: Efficient access, direct storage via subscript Cons: 1. Insertions and deletions are slow, 2. Length cannot be increased For example: when inserting or deleting an

Tags: input parameters data Types mapping relationships overrides res Limitations Different decisions advantage JDBC: We normally use JDBC for programming, which takes a few steps: 1, using JDBC programming to connect to a database, registering drive and database information NBSP;2, operating connection, Open Statement Object NBSP;3, execute SQL from statement object, return result to ResultSet object 4, use resultset to read data, then translate code into specific Pojo object NBS

Label: Why do you want to create an index? This is because creating an index can greatly improve the performance of the system.First, by creating a unique index. To ensure that each row of unique data is in a database table.Second, high-speed data retrieval can be greatly accelerated, which is the most basic reason to create an index.Third. This is particularly relevant in terms of achieving the data's textual integrity.The same can significantly reduce the time of grouping and sorting in querie

session. Although it is optional to use the object, the opening and closing of the transaction boundary is essential whether the underlying API is used or the transaction object is used.(4) It is not intrusive, that is, the so-called lightweight framework(5) Transplant will be very good(6) caching mechanism, providing first-level cache and level two cache(7) Simple HQL programming2. Hibernate disadvantages(1) Hibernate has weaknesses in batch data pr

Recent study of dynamic language, static language, dynamic compilation language and dynamic language between the difference between the pros and cons feel a little confused, their own summary, the first post what is wrong to welcome you master advice:Static language: Now popular Java, C # and other languages should be static, the relevant syntax in the writing code phase has been compiled calibration, if the code is wrong, will error;Dynamic Language:Distinguish between dynamic compilation synta

What is an infinite scrolling page? You must not be unfamiliar. It's not clear, just brush up on Weibo and know. Would you like to know if your site is suitable for using an infinite scrolling page, see this article should be very helpful! The Endless scrolling page is a topic of fire that is now discussed. We say the Infinite scrolling page is a new type of navigation, when you slide the mouse to the bottom of the page, the page will automatically load the new content. We often use the

Advantages and disadvantages of stored procedures Stored Procedure benefits: 1. The T-SQL process code becomes more complex as the application changes over time, adding or deleting functionality, and StoredProcedure provides a replacement location for encapsulating this code. 2. Execution plan (the stored procedure is compiled the first time it is run, which produces an execution plan-is actually a record of the steps that Microsoft SQL Ser

parameter name.If the user has just landed on the site, then his cookie is still there, and when he can't help clicking on the link, the transfer operation will be unnoticed.Note: Of course, the case here is relatively simple, bank transfer is much safer than this.In addition to allowing users to click outside, you can also use picture, as long as the user opens this page, A transfer operation will occur.So, now many mailbox mail pictures are not displayed by default. If the icbc.com transfer

information of the database in one XML, and LINQ to SQL has two ways, one is put into XML, we are called EXTERNL Mapping, and one is in the form of attribute, in each property. Of course, I did not use the NHibernate, only from the data to get these messages, so can not give more comparison. 2. The disadvantages of LINQ to SQL A long time ago, a netizen asked such a question. He had a DataView in the interface, which contained columns, and then he

When we format a USB disk, we can see three options in the Format option, are "Quick format", "Enable compression" and "Create a DOS boot disk", most of the time we choose to format quickly, very few people use the back two, today we will give you a specific introduction to the "Enable compression" option. Look at what it does and what the pros and cons are. Enabling compression is NTFS-formatted to compress the disk (compress the files inside your hard drive to save hard disk space). Advantag