An Online Semi-NMF Algorithm for Soft-Clustering of Financial Institutions
An Online Semi-NMF Algorithm for Soft-Clustering of Financial Institutions
复制标题
一种用于金融机构软聚类的在线半NMF算法
DOI:
10.1145/3336499.3338005
复制
发表时间:
2019
期刊:
影响因子:
--
通讯作者:
Mankad, Shawn
中科院分区:
文献类型:
--
作者:
Cheng, Yuan;Mankad, Shawn
In this paper we develop and propose an online semi-non-negative matrix factorization framework to cluster firms by their stock returns. The model is motivated by an accounting balance sheet identity, where one of the estimated matrix factors can be seen as the percentage of holdings across different asset classes (stocks, bonds, etc.) for each firm -- an important input for risk analysis. We also show that our model is an extension of soft K-means clustering. To enhance the practical value of the proposed model (OSNMF), we also develop a fast estimation framework that can be readily applied to cluster firms in real-time as new data becomes available. The model is validated using synthetic and real data. Specifically, we apply our technique to recover asset holdings of mutual funds and ETFs from stock returns and show our estimates closely match their disclosed balance sheets.
DOI:
10.17016/feds.2018.063
发表时间:
2018-08
期刊:
ERN: Regulation & Supervision (Topic)
影响因子:
--
作者:
Celso Brunetti;J. Harris;Shawn Mankad
通讯作者:
Celso Brunetti;J. Harris;Shawn Mankad
DOI:
--
发表时间:
2012
期刊:
影响因子:
--
作者:
J. Morley
通讯作者:
J. Morley
影响因子:
64.8
作者:
Lee, DD;Seung, HS
通讯作者:
Seung, HS