top rated ultrabooks

efficient algorithm this doesn ' t need to go back and forth between the X's and the Thetas, but that can solve for th ETA and X simultaneously}Collaborative Filteringoptimization ObjectiveNote:1. Sum over J says, for every user, the sum of all the movies rated by, user.for every movie I,sum over a ll the users J that has rated that movie.2. Just something over all the user movie pairs for which has a rati

side.When the available memory is less than the rated value, a meeting is exchanged.How to look at the rated value (RHEL4.0):#cat/proc/meminfoThe exchange will reduce the number of physical pages used in the system in three ways:1. Reduce the buffer and the size of the page cache,2. Swap out the memory page of the System V type3. Swap out or discard the page. (Application occupies a memory page, that is, i

, and by what side.When the available memory is less than the rated value, a meeting is exchanged.How to look at the rated value (RHEL4.0):#cat/proc/meminfoThe exchange will reduce the number of physical pages used in the system in three ways:1. Reduce the buffer and the size of the page cache,2. Swap out the memory page of the System V type3. Swap out or discard the page. (Application occupies a memory pag

A set of classic cost-effective E3 high-end game installed configuration scheme, as follows. Classic high-end high performance price 6000 yuan to strong E3 play the game a masterpiece configure recommendation Accessory Name brand model reference price processor intel Xeon e3-1231 V3 (hash) ￥1299 heatsink ￥99 video card gigabyte GTX1060 G1 gaming 6GB ￥2099 motherboard

When the circuit is short circuit, one of the important characteristics of the line is a sharp increase in the current, when the current flow through a predetermined value, the response to the current rise in the action of the protective device called overcurrent protection. The Overvoltage protection value has a potentiometer on the panel, which can be set manually. The Overcurrent protection value can not be manually set, the machine has been fixed dead, generally

We are in the process of using the computer will inevitably encounter such or such a problem, where the computer blue screen is the problem we often encounter, when our computer CPU overclocking, it will easily damage the hardware, affecting the life of the CPU time. Blue screen is generally the reason for the hardware is incompatible, such as memory, driver incompatibility, and other system failure program and system conflict will also be blue screen. Today's small series for you to introduce d

power is not the same, so the conversion efficiency is taken for granted. But why does the conversion efficiency of the same product change? This is to start with the output voltage of the power source: Power input voltage is rated 220V, and output voltage is +12v, +5v, +3.3v different specifications, which means that the power supply at least three different ("coil ratio", "Magnetic leakage rate" Different transformers, because the power consumption

are: main control, flash memory chip, 4K speed. The main control is the core of SSD, directly determine the overall performance of SSDs, some cheap cottage SSD with u disk master control, poor performance. Another flash is to pay attention to buy Black-and, if in one of the Black-and, installed in the SSD performance is definitely greatly discounted. Solid State hard drive look at what 4K Random Read and write performance represents the data throughput capability of the hard disk

) ￥109 power TI-G VP 350P Power (rated 350W) ￥219 monitor AOC E2252SWDN 21.5-inch LED backlight widescreen flat panel display ￥639 Mouse Pack user optional -- Reference price 3040 $ (includes single display, monitor machine) related recommendations > Why can't the chassis power supply cheap The damage to the computer by the inferior chassis power

make the following improvements: 1, the motherboard chooses the lower price A75 motherboard 2, the current memory price is more expensive, but in view of the APU platform for dual-memory dual-channel optimization is better, you can consider to buy 2 2GB memory set up 4G dual channel 3, the machine power consumption is not high, you can also choose such as "Jinhe Chassis Red Panther -8511b (including 355WB rated 230W power supply) only 169 yuan", t

) The author tried to test it with his own photos. The test photo is a jpeg straight out of the photo, and the same photo that is adjusted by Photoshop to increase contrast and lower saturation. (pictured above) JPEG straight out, rated as high (above) modified by Photoshop, rated potential file modification It does detect it! But what if it's not a color, but a photo synthesis?

September 25 Message: a Linux security vulnerability that is alleged to be more severe than "bleeding heart" was found, although no attack was found to exploit the vulnerability, but a lower operating threshold than "heart bleed" made it more dangerous than the former.Bash is the software used to control the command prompt for a Linux computer. "Bleeding with the heart" allows hackers to spy on the computer but does not allow hackers to gain control of the computer, said Dan Gido, chief executiv

Through the information collected on the Internet, the summary configuration is as follows: 1. Web.xml Configuration 2. Filters filter, which I provide as an accessory 3. Make a change in the place where you need to pass the reference, this is an example of the Internet, write your own JSP test test2.jsp pageencoding= "UTF-8"%>String Name=java.net.urlencoder.encode ("Not rated user View", "UTF-8");String name= "Not

of Part I film, y (i,j) indicates the rating of part J of a film by the user, I:r (i,j) =1 indicates that the J user rated the first film as a (not a missing value), and MJ said the number of users rated the film as J. The right side of the item is a regular item and is prevented from fitting (the previous algorithm is often seen, no longer repeat here). Because both the left and right items have MJ, the u

This article mainly uses BeautifulSoup to crawl the top film information in watercress. The software environment is based on anaconda3+python3.5 The specific code looks like this: #-*-Coding:utf-8-*-"" "Created on Sun Mar 21:37:18 2017 @author: Zch" "" Import urllib.request Import re fr Om BS4 import beautifulsoup import codecs #爬虫函数 def crawl (URL): page = urllib.request.urlopen (URL) con Tents = Page.read () soup = beautifulsoup (contents, "Html.parser") Print (U ' watercress movie 250:

gzip compression:With YSlow detection, when only static file compression is started, gzip compression is rated B:When dynamic file compression is started at the same time, gzip compression is rated A:Six. Summary of key points 1. When modifying the MetaBase.xml file, stop the "IIS Admin Service" service. Otherwise, it cannot be saved. 2. Static compression and dynamic compression rates are best set to 9. 3

Technical Specifications Processor 133MHz AMD SC520 Processor Random Storage Memory MB SDRAM Flash 8 MB Cache 128KB level two cache, frequency 433MHz System bus Single 32-bit, 33MHz pic bus Scope of work environment Working environment Temperature 32° to 104°f (0° to 40 ℃) Relative humidity 5% to 95%, non condensing Height 0 to 6500

Example: A high-speed road has 10 entrances, each entrance can only enter 1 vehicles per second 1, please ask 1 seconds up to a few cars. Tps=10 2, how long each car needs to respond. Reponse time = 1 3, change to 20 cars, can enter several per second. How long is the response time for each car? TPS = 10,reponse time = 1 (10 are first-class, divided into two equal parts, the average TPS (10/1+10/2)/2=7.5 average response times (2+1)/2=1.5 4, the inlet expands to 20, and can be entered several

What is the function of the diode in AC DC power? Output voltage? The output current is determined by the maximum rated current of the diode. The 1n4007 diode (Universal Silicon Rectifier diode M7) is rated at 1 A and the output current is less than 1 a. If you want to understand it, talk about it from the AC power.220 Volts AC Point has two lines, a 0 line, his voltage is always 0 volts, the other is the F

With the increasing popularity of computers, the computer's protection God UPS has been widely used. UPS is the use of simple but its relatively fragile equipment, scientific use and maintenance will prolong the life of ups! Here are some of my experiences for your reference. 1, as far as possible not to connect the electrical inductive load. Because the inductive load of the starting current will often exceed the rated current 3~4 times, this will c