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analysis, clustering analysis and so on. They can be applied to the customer-centric enterprise decision analysis and management of different areas and stages. ① Association Analysis Association analysis, that is, using association rules for data mining. The purpose of association analysis is to explore the relationship between data, which can be found in the database in the form of "90% of customers in a purchase to buy product A at the same time purchase a product B" knowledge. ② Sequence Pat

, places where cars are kept. Car factories, where real cars are built.The reference code is as follows:The code with no synchronization mechanism is as follows: Copy Code code as follows: Package com.jack.thread; Import java.util.ArrayList;Import java.util.List;Import Com.jack.thread.ThreadDemo3.CarBigHouse.Car; /*** The first version of the producer and consumer threads** @author Pinefantasy* @since 2013-11-1*/public class ThreadDemo3 { /*** Sell the car as a producer thre

you from downloading files, but to prevent unauthorized people from extracting the contents of files from compressed files, because WinZip and many other compression programs provide password protection. However, the disadvantage of this approach is also obvious, if you allow someone to access the contents of the file, you must provide him with a password, then you can not prevent this person to pass the password to others. In fact, if you search the Internet, you'll find all sorts of passwords

Arbitrage Time limit:2000/1000 MS (java/others) Memory limit:65536/32768 K (java/others)Total submission (s): 4160 accepted Submission (s): 1890 Problem Description Arbitrage is the use of discrepancies in currency exchange rates to transform one unit of a currency I Nto more than one of the same currency. For example, suppose 1 US Dollar buys 0.5 British pound, 1 British pound buys 10.0 French francs,

, the little girl buys clothes, buys the jewelry, buys the cosmetics, actually does not say that she does not buy can not live down. It's not that she really just likes these things. In fact, she is like her to wear these things, get the people "envy" or "Love" eyes. Monster net 1stcool: To consumption is to highlight their own taste, their status, or their own p

Arbitrage Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 20761 Accepted: 8846 Description Arbitrage is the use of discrepancies in currency exchange rates to transform one unit of a currency into more than one unit of the same currency. For example, suppose that 1 US Dollar buys 0.5 British pound, 1 British pound buys 10.0 French francs, and 1

Arbitrage Time limit:2000/1000 MS (java/others) Memory limit:65536/32768 K (java/others)Total submission (s): 5679 Accepted Submission (s): 2630Problem Description Arbitrage is the use of discrepancies in currency exchange rates to transform one unit of a currency I Nto more than one unit of the same currency. For example, suppose that 1 US Dollar buys 0.5 British pound, 1 British pound buys 10.0 French fr

...) ", the former as the condition, the latter as the result. For example, if a customer buys a Coke, he will also buy juice.How to measure a rule is good enough? There are two volumes, confidence levels (Confidence) and support levels.Consider a purchase record like the following table.After finishingThe number of bars and columns in the table above indicates the number of transactions for which both items are purchased. If the number of trades pur

together, can increase sales. However, we think that a person who likes to play the game will have time to see the film, this rule is not a problem, in fact, this rule misled us. The probability of buying a film in the entire dataset p (buy the film) =7500/10000=75%, while the person who buys the game also buys the movie probability only 66%,66% From the example above, we see that support and self-confid

browser can be accompanied by a cookie.2. Mechanism of cookiesIn the program, session tracking is a very important thing. Theoretically, all request actions for one user should belong to the same session, and all request actions for another user should belong to another session, and they should not be confused. For example, any item that user a buys in a supermarket should be placed in A's shopping cart, regardless of when user a

change dimension. In a typical star-mode data Warehouse, dimension tables change slowly over time. For example, a retailer opens a new store, needs to add the store data to the shop table, or an existing store's business area or other features that need to be tracked change. These changes can result in the insertion or modification of individual records. Starting with version 0.14, hive supports row-level updates. 3. Data restatement. It is sometimes found that the data collection has errors

Many platform platform provides cloud parsing function, the so-called cloud parsing is a DNS server, in general, after the domain name provider buys a domain name, will specify an NS record, for example, in the domain name provider buys the domain name miner-k.com. You need to set up a cloud resolution record. The value of the NS record points to the domain name address provided by cloud resolution (ns1.ali

The newspaper (reporter/Cai wei) yesterday, the reporter from Baidu's network shopping platform "there ah" learned that today, "there ah" will be the seller credit to the display page upgrades, sellers in good faith, service, delivery speed and many other aspects of the real credit performance will be fully exposed. Unlike previous versions, the new version of Baidu "there Ah" shop will be the seller's credit page to a conspicuous position, including sellers satisfaction evaluation and seller s

type and the manufacturer, you are ready to place your order: The more years generally purchased, the lower the discount. The author buys this kind of price is 98.99$, calculate up still relatively affordable. 3.4 Pay Because foreign websites all use the dollar to settle, the domestic user buys, may pay by the credit card or PayPal. Credit cards need to be Mastcard or visa-marked, which support fore

Everything exists because they are needed.Apart from those who need these products, what do we take to attract those who don't need it? FreeThere are a lot of greedy, the same product, others sell xx yuan, you this free to send, who is more competitive?That day overslept, can only take the subway to the company, take line Line 5 when see someone in the free newspaper, although they do not need, or conveniently took a copy. If he sells newspapers, I would be too much trouble to pay my own poc

information pop-up telling the user about the function description. Cannot interrupt the user payment process, then we have to find a way to display the information that is not available. If you need to provide some help information that is not suitable for display on the current page, consider using a floating window or pop-up window. Inform users of the delivery time of goods Online shopping than physical store shopping, there is a big drawback: users need to wait a few days to receive th

not know where they are, and even the possibility of paying the page can not find a 2 they may be interrupted without successfully completing the entire payment process. On the payment page of the Laskys site, when the mouse hovers over some elements, there will be help information pop-up telling the user about the function description. Cannot interrupt the user payment process, then we have to find a way to display the information that is not available. If you need to provide some help inf

. When the godson computer really large-scale into the market, whether it can meet the needs of consumers at all levels. 1. From the point of view of application Everyone buys a computer is just office, entertainment, learning, information inquiry these several main uses. In terms of performance, the current godson pc to deal with word processing, ordinary multimedia applications, internet browsing and so on are sufficient, but also to consider the i

characteristic.A friend buys a net (www.uobuy.com), the site is a collection of categories or more comprehensive, and some of the key best-selling products of the class has been subdivided, such as books and computer books, management books and other small categories, the detailed page is also in accordance with commodity prices from low to high to sort, to facilitate readers to buy, Users can also evaluate the business on a single product page.Gobyg

understanding the information process, did not quickly and clearly grasp the details of the reason for the purchase. We can try to analyze the core key of the title: 198 yuan, the original price of 785 yuan, mark the fashion ktv,3 hours, private rooms, singing packages, prime time, 100 yuan, supermarket coupons, evening vouchers, popcorn 1 barrels If we redesign the title, how would you design it? Pm: Obviously, this group buys the product desi