Talk:Parzen window

From Wikipedia, the free encyclopedia

You have new messages (last change).

[edit] Incorrect caption

Note that the figure shows \sum_{i=1}^N W(x-x_i) rather than \frac{1}{N}\sum_{i=1}^N W(x-x_i) as the caption says. --anon

How do you know, as there is no y-axis in the picture? Oleg Alexandrov (talk) 03:31, 1 March 2006 (UTC)
\frac{1}{N}\sum_{i=1}^N is an average. An average is never greater than the largest component. If you look at the graph, the blue curve is clearly the sum of the component curves. Zik 03:40, 5 March 2006 (UTC)
You are right, I fixed the caption. I have no idea how I had missed that. :) Oleg Alexandrov (talk) 01:09, 6 March 2006 (UTC)

[edit] name

In my experience calling the technique Parzen windowing is limited specifically to time-series analysis, and mainly in engineering fields. In general statistics (and in statistical machine learning), the term kernel density estimation is much more common. Therefore I'd propose it be moved there. As an aside, the attribution to Parzen is also historically problematic, since Rosenblatt introduced the technique into the statistics literature in 1956, and it had been used in several more obscure papers as early as the 1870s, and again in the early 1950s. --Delirium 22:59, 26 August 2006 (UTC)

[edit] x

What is x in the equation? --11:06, 5 October 2006 (UTC)

It is a real number, I guess. Oleg Alexandrov (talk) 02:55, 6 October 2006 (UTC)
Retrieved from "http://en.wikipedia.org../../../p/a/r/Talk%7EParzen_window_e9ba.html"