Mathematical model, how to chase the fierce, positioning?

Model: I know you where http://www.thebeijingnews.com source: Beijing News scientists use mathematical models to predict the H1N1 virus spreading in the world, once again proves the power of the mathematical model.

As the artist painted to delineate objects, writers used text records reality, mathematicians are also able to use mathematical models to describe a system. Today, mathematical models already in human life is everywhere, and only in processing geospatial distribution's role is amazing.

Serial killer to escape the "model"

When mathematicians mathematical language describes a system, they will be system components into one parameter, and set up the relationship between these parameters described formula, in this way, the system will have a hypothetical mathematical model.

Specific to distribution issues, in particular, the mathematical model is good at anchored objects, predicting trends.

Read the drama of the criminal mind readers are on the inside of the various types of serial killer, reduced hunting range of elites was impressed, and with the figures for the United States after fierce (Numb3rs) more emphasized in mathematics to solve a great role.

In fact, the use of mathematical models to locate the serial killer location helped police help.

Serial killer is more than a month's time modus (homicide) three or more criminal.

Once identified as serial killer job from space level positioning it is necessary, and these characteristics is also easier to become a mathematical model parameters.

United States top criminologists Rosny is good at this, he was a doctoral dissertation research out of time gradually using computer algorithms tracking serial killer location of mathematical model, he will be referred to as the "crime" of geographic positioning (criminalgeographicaltargeting).

He will environmental criminology and mathematical model, the model using distance attenuation function, by the offender to abandon the site search to dead criminals living in azimuth, and through the offender's life, work, travel, and other characteristics, deduce its next when and where the perpetrator.

This model is based on a geographical description of the offender, in committing the criminal theory often have a specific area of the "crime."

The serial killer, was killed by the objects are often not random, but the distance the suspect's home is the regularity of distribution, he is not going to leave too far, unfamiliar local crime; but on the other hand, they may not be quite close to the perpetrator, that acquaintance found.

Police looking for criminals tend to be "profiling", psychological level of description can know the offender is "who", and the geographic dimension of the paint can know where is offender "," this kind of out of space-based model to locate criminals, it not only can be used in search of serial killer, can also be used to search for rape, looting, arson and other crime.

Interestingly, recent media coverage, Rosny mathematical model of spatial crime, scientists have found that the great white shark in hunting also adopted a new and similar hunting serial killer.

Great white shark in prey, often have a specific position, usually in seals leave the island position after 100 meters.

Birds and bin Laden are positioning

Global warming and biodiversity decline, simulation of biological risks, look for the endangered creatures, explore the biology of change, the mathematical model is playing a huge role.

Amsterdam University's "European biodiversity database" project takes a lot of mathematical model to track, locate biological in global change of change.

For example, the "Netherlands birds prevention model" is the bird migration law and weather changes, and other parameters to enter mathematical models, analysis of birds in the nearby airports of density, reduce airport because of the bird migration.

UC Berkeley professor of geography ThomasGillespie is claimed to be able to find the world's most difficult to hunt "animals" — this · bin Laden.

In the years of study, he is based on bio-geographical data model to track endangered animals, this model is built on the distance attenuation, and combines the island biogeography in theory, the former is of the view that the similarity between species and relevance as the distance increases and decreases, the latter view, compared to small isolated island, largest island in the rate of species extinction. But he has recently published papers caused a sensation. He said in the article, put this technology to the city, you can even find this · bin Laden. By bin Laden's recent appearances of orientation, cultural background, security requirements, etc., this mathematical model can locate him. According to the analysis, the authors establish the · bin Laden 90% are likely in Pakistan, kurram tribal areas, most probably in the small town of Paraíba do China. He even through Google Earth to locate three this · bin Laden may be hiding in the House.

Flood forecasting mathematical geography

Mathematical geography way to design the model, not only can you search for biological, or you can save mankind.

Spain a team to design a new mathematical model, you can easily predict Ebro upcoming river flood, to give time to evacuate residents nearby. In their model, the Ebro 110 kilometres across the point analysis, with a kind of "transferable" function to determine the size of the model and concluded that a flood of arrival time. Because flood may be affected by various factors, such as heavy rain to dry river beds and on waterRiverbed of certainly is not the same as drought River absorb more water, and thaw, more mud will be brought into the River, so the flood of formation is not a linear process, scientists designed algorithms must include a variety of variables. Through the historical test of the flood, the model error only 2% more, to be able to flood coming 20 hours before prediction.

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The body also has to reason

The mathematical model of spatial levels not just only in analysis, any space on Earth have to reason.

United States has the scientists to the human body as a whole, the mathematical model for the human body can cause cancer cells. They are of a kind of mathematical models, analysis of a system of interaction of the various elements, in biology, this model lets you know which elements to another molecule, the test, the scientific team found some protein is to change direction. This model not only can be used in biology, can also be used in the social networking space, the same group of scientists who are famous social networking site Facebook on test this model in the hope of a large circle of friends, looking for the spatial distribution of the various associated rules.

In sports, there are people using mathematical models for the Championship.

United States a mathematics professor United States Basketball League created a mathematical model, where each player last season and the season's performance statistics enter into leases "Markov process" (MarkoveProcess) method simulation next basketball game, his model, you can get a lot of forecast information, of course, most of the information is to predict who will win. However, this not professors of model, Philadelphia last year serving with Lakers win, his prediction would have failed, for his error, he has explained: the team trades, injuries, and so on many uncertain factors.

But anyway, we can use and geospatial-related mathematical model to find a lot of things, but it should be borne in mind that the mathematical model of the reference value, but by no means all, anything that is not predictable, find anything.

Even if it is omnipresent, nor is it anything, otherwise, it is not science, but rather a superstition.

Reporter Kim Yu