Sökning: "online dictionary learning"
Hittade 4 avhandlingar innehållade orden online dictionary learning.
1. Speech Enhancement Using Nonnegative MatrixFactorization and Hidden Markov Models
Sammanfattning : Reducing interference noise in a noisy speech recording has been a challenging task for many years yet has a variety of applications, for example, in handsfree mobile communications, in speech recognition, and in hearing aids. Traditional single-channel noise reduction schemes, such as Wiener filtering, do not work satisfactorily in the presence of non-stationary background noise. LÄS MER
2. Parameter Estimation - in sparsity we trust
Sammanfattning : This thesis is based on nine papers, all concerned with parameter estimation. The thesis aims at solving problems related to real-world applications such as spectroscopy, DNA sequencing, and audio processing, using sparse modeling heuristics. LÄS MER
3. Automated Text Analysis of Online Content in Marketing : Dictionray-Based Methods and Artificial Intelligence
Sammanfattning : Far more than products or services, words are the most fundamental element in the exchanges between sellers and buyers. Understanding the words that constitute the text that is created when sellers and buyers interact with each other is therefore critical for marketing decision makers. LÄS MER
4. Unsupervised feature learning applied to condition monitoring
Sammanfattning : Improving the reliability and efficiency of rotating machinery are central problems in many application domains, such as energy production and transportation. This requires efficient condition monitoring methods, including analytics needed to predict and detect faults and manage the high volume and velocity of data. LÄS MER