En kommende ICML 2010 papir, \ "Web-Scale Bayesian Click-Through Rate forudsigelse for Sponsored Search Reklame i Microsofts Bing Search Engine \", beskriver den algoritme, der faktisk anvendes i Bing søgemaskinen til at forudsige klikfrekvenser af annoncer.
Fra papir: erkendelse af betydningen af CTR skøn for online-annoncering ... Bing / AdCenter besluttet at køre en konkurrence om at lokke folk på tværs af virksomheden til at udvikle de mest nøjagtige og skalerbare CTR prædiktor.
Algoritmen er beskrevet i denne publikation er bundet til første sted i den første konkurrence og vandt den efterfølgende konkurrence baseret på forudsigelse nøjagtighed. Som følge heraf blev det valgt at erstatte Bing tidligere CTR forudsigelse algoritme, en overgang, som blev afsluttet i sommeren 2009.The papir går videre til beskrive, hvorfor problemet er vigtigt, de anvendte algoritme, og nogle af de nastiness at få noget der virker i laboratoriet til at køre på levende hjemmeside.
Gå ikke glip af tidbit i den ende hvor de siger at de er \ "undersøger brugen af mere kraftfulde modeller, såsom feature-baserede kollaborative filtrering metode Matchbox (Stern, Herbrich, & Graepel, 2009) for latent funktion opdagelse og personalisering. \ "
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Obesity
Obesity is when a person is carrying too much body fat for their height and sex. A person is considered obese if they have a Body Mass Index (BMI) - weight in kilograms divided by their height in meters squared - of 30 or greater. Obesity can happen when you eat more calories than you burn off over a period of time.
The rate at which you burn off calories from food and drink is known as your metabolic rate. This is often faster during growth spurts and puberty, but reaches a fairly steady rate by adulthood.
People who are very active generally have a higher metabolic rate than those who are inactive because they burn off calories faster through energetic activity. For example, a labourer working on a building site may need as many as 4,000-5,000 calories a day to keep an even weight. In contrast, an office worker who uses a car to get to work, and does not exercise, may only need 1,500 calories a day.
If the amount of calories provided by your daily food intake is more than the calories that you burn off, your body will store the extra energy as fat. This is the body's way of protecting itself in case of starvation. However, starvation in developed countries is extremely rare, and this insurance against 'hard times' is hardly ever needed.
Most of us have more food than we need, and much of it is higher in calories than the human body was originally designed to cope with. Fast foods, high calorie snacks, and large portions all mean it is easy to take in more energy than we need. Obesity has now become one of the most serious medical problems of the western world.
The rate at which you burn off calories from food and drink is known as your metabolic rate. This is often faster during growth spurts and puberty, but reaches a fairly steady rate by adulthood.
People who are very active generally have a higher metabolic rate than those who are inactive because they burn off calories faster through energetic activity. For example, a labourer working on a building site may need as many as 4,000-5,000 calories a day to keep an even weight. In contrast, an office worker who uses a car to get to work, and does not exercise, may only need 1,500 calories a day.
If the amount of calories provided by your daily food intake is more than the calories that you burn off, your body will store the extra energy as fat. This is the body's way of protecting itself in case of starvation. However, starvation in developed countries is extremely rare, and this insurance against 'hard times' is hardly ever needed.
Most of us have more food than we need, and much of it is higher in calories than the human body was originally designed to cope with. Fast foods, high calorie snacks, and large portions all mean it is easy to take in more energy than we need. Obesity has now become one of the most serious medical problems of the western world.