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- John C. Platt
- 2000

- Bernhard Schölkopf, John C. Platt, John Shawe-Taylor, Alexander J. Smola, Robert C. Williamson
- Neural Computation
- 2001

Suppose you are given some data set drawn from an underlying probability distribution P and you want to estimate a "simple" subset S of input space such that the probability that a test point drawn from P lies outside of S equals some a priori specified value between 0 and 1. We propose a method to approach this problem by trying to estimate a function f… (More)

- John C. Platt, Nello Cristianini, John Shawe-Taylor
- NIPS
- 1999

We present a new learning architecture: the Decision Directed Acyclic Graph (DDAG), which is used to combine many two-class classifiers into a multiclass classifier. For an AE-class problem, the DDAG contains AE´AE ½µ¾ classifiers, one for each pair of classes. We present a VC analysis of the case when the node classifiers are hyperplanes; the resulting… (More)

- John C. Platt, John Platt
- 1998

This paper proposes a new algorithm for training support vector machines: Sequential Minimal Optimization, or SMO. Training a support vector machine requires the solution of a very large quadratic programming (QP) optimization problem. SMO breaks this large QP problem into a series of smallest possible QP problems. These small QP problems are solved… (More)

- John C. Platt
- Neural Computation
- 1991

We have created a network that allocates a new computational unit whenever an unusual pattern is presented to the network. This network forms compact representations, yet learns easily and rapidly. The network can be used at any time in the learning process and the learning patterns do not have to be repeated. The units in this network respond to only a… (More)

- Susan T. Dumais, John C. Platt, David Hecherman, Mehran Sahami
- CIKM
- 1998

1. ABSTRACT Text categorization – the assignment of natural language texts to one or more predefined categories based on their content – is an important component in many information organization and management tasks. We compare the effectiveness of five different automatic learning algorithms for text categorization in terms of learning speed, real-time… (More)

- Patrice Y. Simard, David Steinkraus, John C. Platt
- ICDAR
- 2003

Neural networks are a powerful technology for classification of visual inputs arising from documents. However, there is a confusing plethora of different neural network methods that are used in the literature and in industry. This paper describes a set of concrete best practices that document analysis researchers can use to get good results with neural… (More)

- Paul A. Viola, John C. Platt, Cha Zhang
- NIPS
- 2005

A good image object detection algorithm is accurate, fast, and does not require exact locations of objects in a training set. We can create such an object detector by taking the architecture of the Viola-Jones detector cascade and training it with a new variant of boosting that we call MIL-Boost. MILBoost uses cost functions from the Multiple Instance… (More)

Suppose you are given some dataset drawn from an underlying probability distribution P and you want to estimate a " simple " subset S of input space such that the probability that a test point drawn from P lies outside of S equals some a priori specified between 0 and 1. We propose a method to approach this problem by trying to estimate a function f which… (More)

- Asela Gunawardana, Milind Mahajan, Alex Acero, John C. Platt
- INTERSPEECH
- 2005

In this paper, we show the novel application of hidden conditional random fields (HCRFs) – conditional random fields with hidden state sequences – for modeling speech. Hidden state sequences are critical for modeling the non-stationarity of speech signals. We show that HCRFs can easily be trained using the simple direct optimization technique of stochastic… (More)