A Generative Model for Self/Non-self Discrimination in Strings

نویسنده

  • Matti Pöllä
چکیده

A statistical generative model is presented as an alternative to negative selection in anomaly detection of string data. We extend the probabilistic approach to binary classification from fixed-length binary strings into variable-length strings from a finite symbol alphabet by fitting a mixture model of multinomial distributions for the frequency of adjacent symbols. Robust and localized change analysis of text documents is viewed as an application area.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Self-efficacy in Patients with Multiple Sclerosis: A Model Test Study

Background: Multiple Sclerosis (MS) is a common disease among youngsters and self-efficacy is a crucial factor in these patients. Various variables, including demographic characteristics and disease symptoms, affect self-efficacy. Therefore, it is necessary to assess the relationship between these factors using a clear and comprehensive model. Aim: this s...

متن کامل

Voice-based Age and Gender Recognition using Training Generative Sparse Model

Abstract: Gender recognition and age detection are important problems in telephone speech processing to investigate the identity of an individual using voice characteristics. In this paper a new gender and age recognition system is introduced based on generative incoherent models learned using sparse non-negative matrix factorization and atom correction post-processing method. Similar to genera...

متن کامل

Structural Model of the Relationship between Resilience and Academic Achievement with Mediating Role of Self-Regulation Strategies and Self-Esteem in high School student with cerebral palsy

Abstract The purpose of this study was to examine the structural model of the relationship between resiliency and academic achievement whit mediating role of self-regulation and self-esteem strategies in high school students with cerebral palsy. For this purpose, 151 high school students with cerebral palsy selected using convenience sampling method among students who were studying at special s...

متن کامل

Discrimination and preliminary selection of self-compatible progenies among controlled crosses in almond using Sf specific primer

Self-incompatibility in almond and Prunus species is an important trait that prevents self-fertilization. Selfincompatibility in almond is controlled gametophytically by the multiallelic S-locus. Present study was done in order to identification and preliminary selection of self compatible progenies resulted from controlled crosses in almond using specific primer SfF/SfR. Some important morphol...

متن کامل

Robust and Accurate Discrimination of Self/Non-Self Antigen Presentations by Regulatory T Cell Suppression

The immune response by T cells usually discriminates self and non-self antigens, even though the negative selection of self-reactive T cells is imperfect and a certain fraction of T cells can respond to self-antigens. In this study, we construct a simple mathematical model of T cell populations to analyze how such self/non-self discrimination is possible. The results demonstrate that the contro...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2009