Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Estimation and Clustering with Infinite Rankings   This paper presents a natural extension of stagewise ranking to the the case
of infinitely many items. We introduce the infinite generalized Mallows model
(IGM), describe its properties and give procedures to estimate it from data.
For estimation of multimodal distributions we introduce the
Exponential-Blurring-Mean-Shift nonparametric clustering algorithm. The
experiments highlight the properties of the new model and demonstrate that
infinite models can be simple, elegant and practical.

25
The categories of this paper are: patt-sol
21
The categories of this paper are: adap-org
12
The categories of this paper are: nucl-th
5
The categories of this paper are: gr-qc
2
The categories of this paper are: math
15
The categories of this paper are: nucl-ex
23
The categories of this paper are: solv-int
11
The categories of this paper are: hep-lat
37
The categories of this paper are: supr-con
22
The categories of this paper are: chao-dyn
3
The categories of this paper are: physics
18
The categories of this paper are: econ
19
The categories of this paper are: eess
4
The categories of this paper are: cond-mat
28
The categories of this paper are: alg-geom
6
The categories of this paper are: astro-ph