disadvantages of fet

tree can be well extended to large databases, and its size is independent of the size of the database.The disadvantages of the decision tree:In the decision tree, the results of information gain are biased towards those features with more numerical values.Second, the decision tree processing the missing data difficulties.Thirdly, the problem of over-fitting is appearing.Iv. ignore correlations between attributes in the dataset.2 Advantages and

1. Postgraduate Entrance Exam Benefits: Delay employment pressure and delay the arrival of employment periods; in some cities, some schools can solve the issue of hukou for research institutes to improve their academic qualifications and enhance their competitiveness; The State has introduced a new expansion policy for the Research Institute. It is relatively easy to take a postgraduate entrance exam and get a higher diploma. There is a creative idea in the academic field. You can keep workin

product configurations, making it easy to change a specific factory for an application. b Let the concrete creation instance process and the client separate, the client through the abstract interface operation instance, the product specific class name also is separated by the concrete factory realization. Disadvantages : If you want to add new methods, great changes. Application : A thecode to connect to the database in the JDK is a typical abstract

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The full duplex of a switch means that the switch can receive data while sending data. It cannot directly connect the input/output ports with different rates and is prone to packet loss, in particular, it supports switching between ports at different speeds to ensure collaboration between high-speed ports and low-speed ports. With the gradual development of network applications, telecom-grade switches, especially layer-3 switches, have become the focus of competition in today's market. However,

(1) circuit switching: Before communication, a physical channel exclusive to both parties must be established between the two parties (composed of the switching devices and links of both parties ), therefore, it has the following advantages and disadvantages. Advantages: ① Because the communication line is dedicated to users of both parties, the data transmission latency is very small. ② Once a physical path is established between the communication pa

PHP is a popular open-source server-side scripting language at home and abroad. It can meet the development needs of large, medium and small projects. We will introduce several mainstream PHP frameworks and their advantages and disadvantages in this article and share them with you as a reference. The main reference of ph php is a popular open-source server-side scripting language at home and abroad. It can meet the development needs of large, medium a

Original article translated from: Simplified. If the database can run continuously, of course, it is best. However, this is often costly. Sometimes it is even more advantageous than what it gets. In the sqlserver2008 database, there are many high availability solutions. For example, you can use failover clusters, database images, log transmission, replication, and other means to improve the high availability of the database. Because there are many solutions, the database administrator has to m

I. Ordinary table (Heap table): For most design scenarios, there are advantages and disadvantages. Advantages:1. Simple and convenient grammar2. Suitable for most scenes Disadvantages:1. Update log cost is large2.Delete Unable to free space (HWM high Water mark does not fall)3. Table record too large retrieval too slow4. Index back to table read overhead very much5. Even if the orderly insertion, it is di

From: http://database.ctocio.com.cn/116/12198616.shtmlThe followingArticleThis article mainly introduces the advantages and disadvantages of Oracle Database indexes. If you want to know the advantages and disadvantages of Oracle Database indexes, you can use the following articles to understand its practical application and functions. , The following is a detailed introduction of the article ...... The