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The author:(作者)qqpublished in(发表于) 2014/6/11 10:49:55 Beijing officials declassified from the housing lottery system， called long wind
Housing Lottery official decryption
Staff presentation "import", "kind", "rocking", "export" step
Probability would be "a long time in the Lottery"
Priority family will "claim" from the housing
This city from the housing projects a lottery is on the countdown. Housing Lottery lottery software software, and motor vehicles are similar to but not exactly the same. People won't see the software operating system, can guarantee that hundreds of thousands of people participate in the housing Lottery fair and open it? Today, the heads of municipal councils to set a slightly more sophisticated system for the first time to decrypt.
4 steps from the housing lottery
"This system is similar to a lottery system and car. "The heads of municipal councils to use the computer shows a housing lottery software uses a test data disc process.
Into the blue "Beijing owner-occupied housing lottery software" page, notary and staff hold the database, first step "into families". Data of all priority and non-priority families, were engraved on one CD. Screen display project information, location, number, application number, and the number of priority and non-priority domestic spaces.
Staff click on the "import" button, the database reads the CD, the screen will display a number, public and municipal councils compared with other publicly available data.
Reporter noted that, on this page, has designed a line of fixed tip "because of family priorities far exceeding housing units, the lottery priority only families". Prompt on the next line is "rocking number for this House twice times the amount available, that ****." "2" this number may choose to fill out.
"If developers will need, in some individual projects, you can select more than twice times the data, to avoid the lottery again a waste of time and cost. "The official said.
Subsequently, is to take random seeding, rocking the purchase order, export a lottery results 3 steps.
People taking "random seed"
What is the "random seed"? City councils in charge explained that at the scene, notary's Office will prepare the 12 balls, feel free to grab 6 of them and invited corresponds to number 6 on the seats-applicants taking 6 different numbers, the 6 numbers will follow in order to form a maximum of 6 digits, becomes a lottery software for internal calculation of the random seed number.
In the random seed is drawn, members of the public need to tap the space bar makes the numbers begin to spin, and then tap the space bar to stop, produced the final data, but an interval of 5 seconds to shoot the next data. This is to avoid misuse of the public, taking multiple data in a row.
"Ultimately the lottery method is used with a linear congruential algorithm to calculate the result, sorts again. "National standards Committee market, and public opinion and social survey marked Board will Technology Committee expert, people University statistics College Professor Du Zifang introduced said, linear with over algorithm does not like shuangse Qiu as will all" ball "are threw in a baskets in shake, but through a complex of formula, with" random seed "is out each personal of registration number by corresponds to of order,, a registration number first times was is out, on first a was shake in the. And so on.
Public availability checking system
In the lottery field, municipal councils will carry out CD storage link, and open the final lottery results.
Car shakes when there are a lot of people to come forward, hoping public algorithms. Although the lottery system of the municipal councils has not been determined whether or not to open the algorithm, but the municipal councils will be publicized a checking software, after each lottery, members of the public can be done by checking the random seed number.
In other words, if the people in the system of checking random seed enter the scene number, and finally arrive at the same result and a lottery system. If members of the public entered and not the same 6-digit random seed number, will come to a totally different result.
In addition, the cars in the lottery, have yielded "a long time in the Lottery" crowd, from the housing lottery system will appear "a long time in the Lottery" of people? Officials said, from a probability perspective must have exist, but along with the market follow-up projects, selected from the housing of the people likely to improve gradually.
Analysis the first lottery of "priority" hopeless
According to the plan, Jin Yujia and hengda real estate first from the housing projects will start this month, owned by lottery.
This city's first start the application from the housing projects of evergrande Royal scenic Bay, cumulative final on-site audit for 64011 families, which give priority to family 51637 group, far more than 2000 homes, non-priority families have certainly "exit".
Text/reporter Chen Si
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