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be as accurate as possible, in order to ensure easy to understand, may not reach the academic level of accuracy.3) This post emphasizes knowledge and understanding. And in reality, is to spend six hundred or seven hundred to buy a i3, or 1000 buy a i5, the specific situation of the specific analysis, there is no fixed answer.4) If it is local tyrants, just a ' cool ' word. Do not seek cost-effective, only the most expensive. This post is not recommen

connectable; otherwise, duplicate items will appear in the item set. Here is an example of pruning. For example, during the generation process, the listed 3_item set includes {I1, I2, I3}, {I1, I3, I5 }, {I2, I3, I4}, {I2, I3, I5}, {I2, I4, I5}, but because of {I3, I4} and {I4, i5} does not appear in the middle, so {I

connected. After the connection, {I1, I2, I3} is obtained, but {I1, I2} and {I2, i3} is not connectable; otherwise, duplicate items will appear in the item set. Here is an example of pruning. For example, during the generation process, the listed 3_item set includes {I1, I2, I3}, {I1, I3, I5 }, {I2, I3, I4}, {I2, I3, I5}, {I2, I4, I5}, but because of {I3, I4} a

frequent, the candidate is certainly not frequent, so that it can be removed from CK. (Tip: Why do you compress CK?) Because the actual situation of transaction records are often stored on the external storage, such as databases or other formats of the file, in each calculation of the candidate count will need to compare the candidate with all transactions, it is known that access to the external memory is often relatively low efficiency, so Apriori joined the so-called pruning step, The candid

In the domain name resolution process, some users like me, always feel that the takeover status from X to √ wait too long.For example, in the Cloudxns, see the following Red Cross question the Lord always has a thing to do not do always wait to see it turn green impulse.650) this.width=650; "src=" Http://i5.tietuku.com/52e71887fd1d964c.png "style=" margin:0px;padding:0px;border:0px; " />In fact, calm down, the emergence of Red fork may not be the doma

structure includes local variables, registers, andPointer, return address, etc. Since we can see this with formatted strings, we should take a closer look.The following figure shows the structure of the PostgreSQL-based stack. It indicates that the world wide variety of General registers (each group contains eight registers) are available. One of these registers is a global register,The other three registers are out, local, in.Frame 0 frame 1 frame 2[L0] + ----> [l0] + ----> [l0][L1] | [L1] | [

next RX470 card, according to the performance of the graphics card, then decide what CPU better to choose. The RX470 graphics card uses the RX 4,801 Polaris 10 Core, based on the 14nm process, based on the GCN 4.0 architecture. 32 groups of CU units, 2048 flow processing units, 128 texture processing units, 256bit video memory bit width, 8GB GDDR5 video memory, core base frequency 926mhz,boost frequency 1206MHz, Video memory frequency of 6.6GHz, performance equivalent to RX480, belong to the c

case, a new object is created.40;Integer i2 = new Integer(40);System.out.println(i1==i2);//输出false An example of a richer integerinteger i1 = 40;integer i2 = 40;integer i3 = 0;integer i4 = new Integer (40); Integer i5 = new Integer (40); integer I6 = new Integer (0); System.out.println ( "I1=i2" + (I1 = = i2)); System.out.println ( "I1=i2+i3" + (I1 = = i2 + i3)); System.out.println ( "I1=i4" + (I1 = = i4)); System.out.println ( "i4=

Often some netizens send some high-end tens of thousands of tyrants Computer Configuration let the editor to see, many of them have a number of details or fatal problems, today for everyone to organize four sets of tens of thousands of dollars, can be counted on the tyrants level of user Computer Configuration comments, I hope that we can use the deficiencies, learn to extrapolate it. 10350 yuan Intel unique tyrants computer matching reviews Machine Price "10350 yuan Accessories name brand Mo

integer Integer i1 = 40;integer i2 = 40;integer i3 = 0;integer i4 = new Integer (40 = new Integer (40 = new integer (0 "I1=i2" + (i1 == I2)); System.out.println ( "I1=i2+i3" + (I1 = = i2 + i3)); System.out.println ( "I1=i4" + (i1 == I4)); System.out.println ( "i4=i5" + (i4 == i5)); System.out.println ( "I4=i5+i6" + (i4 = =

Samsung 450R4J-X06 Reference Price: 3599 RMBRecommended reason: Exquisite and colorful fuselage, sufficient performance Samsung notebooks have always been satisfactory in terms of design, giving priority to female users. Samsung 450R4J-X06 Notebook has exquisite fuselage design, the fuselage weight 1.9kg, has the good portability. In addition, the notebook also has a lunar black, mysterious silver, ivory white and pomegranate red light a variety of vibrant colors to choose from, sui

, these five packaging classes create cache data of the corresponding type of value [-128,127], but new objects will still be created beyond this range. The packaging classes Float and Double of the two floating point number types do not implement the constant pool technology.1) Integer and constant pool Integer i1 = 40;Integer i2 = 40;Integer i3 = 0;Integer i4 = new Integer(40);Integer i5 = new Integer(40);Integer i6 = new Integer(0);System.out.print

scenario (1 ). integeri1 = 40; Because Integer is the packaging class of the basic data type int, it is an object, so Java will execute the automatic packing operation during compilation to directly encapsulate the code into Integeri1 = Integer. valueOf (40) to use objects in the constant pool (2). Integeri1 = newInteger (40); in this case, a new object is created. Integer i1 = 40;Integer i2 = new Integer(40); System.out.println(i1 == i2);//false In this case, new Integer does not automatically

); // Output FalseAn example of a richer integer:1Integer I1 = 40;2Integer I2 = 40;3Integer i3 = 0;4Integer I4 =NewInteger (40);5Integer i5 =NewInteger (40);6Integer I6 =NewInteger (0);7 8System.out.println ("I1=i2" + (I1 = =i2));9System.out.println ("I1=i2+i3" + (I1 = = I2 +i3));TenSystem.out.println ("I1=i4" + (I1 = =I4)); OneSystem.out.println ("I4=i5" + (I4 = =i5