statistics

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Separation and pattern matching techniques

I am new to Artificial Neural Networks. I am interested in an application like this: I have a significantly large set of objects. Each object has six properties, denoted by P1–P6.Each proper[详细]

2023-04-03 05:04 分类：问答
Returning NaN or throwing an exception?

I have a function that gets a sample (an std::vector<double>) as input and computes the average of the sample: what is the best way to handle the empty input vector case?[详细]

2023-04-02 20:31 分类：问答
Oracle - Do you need to calculate statistics after creating index or adding columns?

W开发者_StackOverflow中文版e use an Oracle 10.2.0.5 database in Production. Optimizer is in \"cost-based\" mode.[详细]

2023-04-02 17:52 分类：问答
calculating number of permutations (I guess)

I can generate word using 2 letters only, lets say \'k\' and \'e\'. Length of word is from 5 - 35 characters. Each letter and len of the word are randomly chosen with rand(). Can someone tell me how m[详细]

2023-04-01 21:36 分类：问答
words usage database?

Is there any free database/place out there with commonality/usa开发者_Python百科ge ratios of English words? (British or U.S. English, doesn\'t matter)[详细]

2023-04-01 20:33 分类：问答
date axis with fixed limit for barplot and/or hist

Given a list of dates dates <- data.frame(foo = c开发者_JAVA技巧( \"2009-03-15\", \"2010-04-15\",[详细]

2023-04-01 17:26 分类：问答
hit counter - technology is irrelevant - whats best to use?

whats the best free hit counter? preferably one without ads. I dont mind what technology is used i.e php / java etc.[详细]

2023-04-01 13:43 分类：问答
find all non-repeating paths through a set of connected nodes/process diagram

I am trying to understand if its possible in any reasonable way to establish a set of non-repeating paths through a given process diagram.[详细]

2023-04-01 07:37 分类：问答
Effects of dropping PK on other indexes

I need to update a large number of keys in a large SQL Server 2005 database and will be dropping FKs and PKs on a bunch of tables, doing the update (which replaces the values of the PK/FK) and then ad[详细]

2023-04-01 05:03 分类：问答
Crowdsourcing reliability measurements - spam/fraud detection

I\'d like to collect some kind of geographical information from website users - for given set of data they will mark checkbox indicating whether place has or has not given property. Are there any tool[详细]

2023-03-31 04:38 分类：问答