The meaning of probability
Probability, also known as probability, opportunity, probability or possibility, is the basic concept of probability theory. Probability is a measure of the probability of random events. Generally, the real number between 0 and 1 indicates the probability of events. The closer to 1, the more likely it is to happen. The closer to zero, the less likely it is to happen. It is often said that what percentage of someone is sure to pass the exam and how likely it is that something will happen. These are examples of probability.
If the test meets two requirements:
1 test has only a limited number of basic results;
The possibility of each basic result of the experiment is the same.
Such an experiment is a classic experiment.
For event A in the classical experiment, its probability is defined as: PA=m/n, where n represents the total number of all possible basic results in the experiment. M represents the number of basic test results contained in event A. This method of defining probability is called the classical definition of probability.
Appreciation of probabilistic sentence-making
1, success is a probability distribution, and the key is whether you can persist until the moment when success begins to appear.
The probability of miracle always depends on hard work.
We often think that the probability of these things happening is too small, but when they really happen, we know that he is not talking nonsense. In fact, as long as you trust it, it's not a big deal.
4. If the history of evolution is repeated, the probability of human appearance is zero.
5. The people who can hold hands with you now, the probability that you meet is almost a miracle. I hope you will not let go of each other's hands under any circumstances.
6. Too complicated design actually reduces the probability of success.
7. It is said that people will meet 30 million people in their lifetime, and the probability of two people falling in love is less than 0.00005. Then I know that meeting you is my fate, falling in love with you is my love, and it is my duty to protect you. Love you forever.
8. The only difference is which problem we are most nervous about, and the probability of it will be forgotten.
9. I feel that knowing you is a bit like a miracle with extremely low probability.
10, if an animal is not wary of novelty, its survival probability will be very low.
1 1, the probability of your meeting is almost a miracle.
12, our life sits at the top of the probability pyramid. In the face of the wonders of nature, do we still have the right and qualification to say that I am not important?
13, the result of voltage sag probability evaluation can be used to judge whether the power system network structure is reasonable.
14. Using the classical large deviation method, under certain conditions, the logarithmic asymptotic formula of the corresponding probability and the large deviation principle of the measure family are obtained.
15, I think it was the birth of probability theory, which really promoted the insurance industry. That's why I think theory is very important for finance.
16 and 2 students have studied probability function.
17. On this basis, the error probability of matched filter receiver is calculated and compared with the computer simulation value. The results show that the two are in good agreement.
18, I imagine falling in love with someone, just like going out and being struck by lightning. Although the probability is small, there is nothing you can do. It just happened, you were set on fire, and then you became a pile of ashes.
19, we should fully understand the duality of * * * supervision, prevent the slow progress, correct the bad tendency in * * * supervision in time, and reduce the probability of rent-seeking and corruption.
20. Many examples show that the opinions of a few people are not necessarily wrong. Forward-looking consideration of different opinions will reduce the error probability of legal revision and prevent and reduce possible deviations in the implementation after revision.
2 1. Whether a person can achieve great things depends on his temper. The bigger his temper, the less likely he is to succeed.
22, on the earth, in the crowd, meet a person, what is the possible effect of falling in love with it. This probability is extremely low.
The more positive your attitude, the greater your determination, the more resources and strength you can mobilize, and the higher the probability of success. Attitude determines the maximum probability of success and all the knowledge of success.
24. If you are not sure whether the surroundings are safe, do not replace the magazine. At this time, the probability of your bad luck is unimaginable. Remember, even a small pistol like USP with 1 gun is enough to kill the enemy.
25. Those who expect pies to fall from the sky will starve to death, and those who expect rabbits will be disappointed. Numerous lessons have proved that it is impossible to expect small probability events to save the scene. Common sense is common sense, and everything against logic will not be established. Acting according to objective laws and common sense is the right way.
26. The algorithm uses parameters such as the energy of the frame signal and the energy of the sub-band signal, and calculates the discrimination information between the frame signal and the noise frame based on the sub-band energy distribution probability.
In addition, only in the two highest social strata, the more people exposed to ultraviolet rays, the greater the probability of melanoma.
28. A probabilistic cellular automata model of multi-region coupling state transition is proposed in view of the differences of sub-regions in multi-region systems.
29. In this example, the metal layer of SRAM cell has been modified to reduce the possibility of short circuit between metal nodes.
Selected probability sentences
1. Probability statistics, optimization, applied physics, applied mathematics, data mining, project management, soft computing.
2. Calculate the probability of lottery and traditional lottery with touch ball model.
According to the standard explanation of quantum mechanics, the basic laws of physics are determined by probability.
4. With the help of probability theory, Chinese character information is regarded as a random event, and the concept of probability distance is put forward.
5. The more small probability events occur, the greater the impact on the character classification results.
6. In order to solve the file transfer problem, a new adaptive switching probability and mutation probability are introduced, and a genetic algorithm is proposed to solve the file transfer problem.
7. In addition, I need the anti-probability function.
8. According to the stability calculation results of Laozaoping landslide group, the occurrence probability of landslide is determined.
9. The pockmarked eyes in the lover's eyes are a fascinating reality that excludes all possible possibilities.
10. By establishing the probability model of cone beam, Monte Carlo method is used to directly simulate the energy flow distribution of sunlight on the focal plane after passing through the dish-shaped reflective condenser.
1 1. How to accurately evaluate the voltage sag probability of distribution feeder network, the key is to simulate the model and fault type of feeder system.
12. The quasi-steady probability distribution function of the system is obtained.
13. Based on the reliability theory and Monte Carlo method, the failure probability of axle box corresponding to different kilometers of locomotive is analyzed.
14. Considering the specific influence of the top space covered by the ground and the blind area between lobes, the actual plane detection capability model of the radar unit is discussed first, and then the actual detection probability distribution model and simulation algorithm of the radar network are proposed.
Objective: To explore the relationship between the probability of coronary heart disease and fundus arteriosclerosis.
16. The large deviation theory provides a good method for calculating the probability of small probability events. Although the probability of such an event may be small, once it happens, it will have a huge impact.
17. Monte Carlo simulation involves using random numbers and probabilities to find solutions to complex problems.
18. In order to calculate the possibility of A, you must square the probability amplitude α. Similarly, a similar calculation should be made for B.
19. It increases the amount of information and corrects the prior probability through market research, thus improving the decision maker's grasp of the future possibility and reducing the decision risk.
20. The errors in the bitmap of torpedo equipotential matrix in the submarine fire control system currently used in ships are pointed out.
2 1. In the quantum transition problem, the first-order approximate solution of transition probability amplitude is given by using time-dependent perturbation theory.
22. The experimental results show that compared with huffman encoding, this coding method has advantages in the case of uniform distribution of gray probability.
23. If the probability of accidental occurrence of an experimental result is statistically higher than five standard deviations or lower than one in a million, physicists can assert that it is a discovery.
24. The experimental results show that the introduction of similarity probability is beneficial to further improve the speech recognition rate, and at the same time, it is found that the codebook does not need codeword size.
25. The winning method of gambling is probability. When playing poker, bet more when you win, and lose as little as possible when you lose.
Under the over-the-horizon attack, different shooting methods may have different effects on the capture probability.
27. At the same time, because Brownian motion is closely related to differential equations, it becomes an important channel for probability and analysis.
28. Bayesian network is a very effective data mining tool, which can qualitatively and quantitatively analyze the dependency between attributes and make probabilistic reasoning.
29. The extinction probability of homogeneous birth and death chain in Markov environment with absorbing wall and M as reflecting wall is obtained.