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Member since March 19, 2007
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I'm a software engineer with more than 10 years of professional experience. I am an expert in machine learning, natural language processing, voice signal processing, image processing and data-analysis. My main areas of expertise are: -Java, Scala, Go, Python -Deeplearning4j, Tensorflow, Scikit-learn, CMUSphink, HTK -Akka Framework, Apache Spark I have a deep knowledge of algorithms and data structures and rich experience in system architecture design. Please contact me about how i might be able to help you with a project.
$20 USD/hr
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Recent Reviews


Golang Open source: Direct feedback alignment Learning for Convolutional Neural Network

Jan 2017 - Feb 2017 (1 month)

Implementation of Direct feedback alignment Learning algorithm for Multilayer (Feed forward and Convolutional) Neural Network. The learning algorithm is based on the paper from "Direct Feedback Alignment Provides Learning in Deep Neural Networks" github link: https_//www_github_com/jonysugianto/dfa_nn language: golang

Python Open source: Text Vectorization algorithm

Aug 2016 - Sep 2016 (1 month)

Python implementation of text vectorization algorithms. Currently supported vectorization methods: TFIDF-Vectorizer LSI-Vectorizer For further explanation about the vectorization methods please refer the textvectorizer.pdf. requirements: -python 3.5 -gensim -nltk -stop-words github link: https_//www_github_com/jonysugianto/textvectorizer language: python

Scala opensource: feature extraction for image processing using Generalized Sparse Coding Neural Gas

Apr 2016 - May 2016 (1 month)

Scala implementation of generalized sparse coding neural gas algorithms based on "Sparse Coding Neural Gas: Learning of Overcomplete Data Representations" and "Improved parameter less SOM algorithm" github link: https_//www_github_com/jonysugianto/gscng language: scala

Scala open source: Supervised and unsupervised learning algorithms for growing neural gas

Sep 2015 - Oct 2015 (1 month)

cala implementation of supervised and unsupervised growing neural gas algorithms based on https_//www_cs_swarthmore_edu/~meeden/DevelopmentalRobotics/[login to view URL] github link: https_//www_github_com/jonysugianto/gng language: scala

Golang open source: voice activity detection algorithm using long-term spectral flatness measurement

May 2014 - Jun 2014 (1 month)

Golang implementation of voice activity detection (VAD) algorithm utilizing long-term spectral flatness measure (LSFM) which is capable of working at 10 dB and lower signal-to-noise ratios(SNRs). This implementation based on paper: "Efficient voice activity detection algorithm using long-term spectral flatness measure" github link: https_//www_github_com/jonysugianto/vad_lsfm language: golang

Golang open source: Math library functions for neural network

May 2013 - May 2013 (1 month)

Math functions for neural network implementation. The name and semantic of the Methods in Vector are derived from the class INDArray from the Project ND4J, a library for numerical computing for Java. github link: https_//www_github_com/jonysugianto/mathlib language: golang

Research Engineer

Nov 2008 - Apr 2016 (7 years)

Positions: Research Engineer, Software Architect, Dept. Head Research Projects: - Architecting and Implementing Search engine for [login to view URL] ([login to view URL]) - Architecting and Implementing Search engine for News portal in indonesia([login to view URL]) - Development Product Recommendation (Item Based Collaborative Filtering) - Architecting and Implementing Detik analytic (Reading Behaviour, User Profiling) - Development Algorithm for Automatic Keyword Extraction from Detikdocument

Senior Java Developer

Mar 2001 - Apr 2008 (7 years)

Positions: Senior Java Developer Projects: - Implementing various J2EE-Application for IBM-Websphere - Implementing various Java-GUI Application with Swing

Delphi Software Developer

Mar 2000 - Feb 2001 (11 months)

Positions: Delphi Developer, Java Developer Projects: - Development Visual HTML Generator with Delphi and Java - Development distributed logistic Application with Corba (Borland Inprise) for Heidelberger Zement AG

C++ Software Developer

Jul 1998 - Jan 2000 (1 year)

Positions: C++ Developer Projects: - Development Various Applications for industrial Automation with Simatic S5 and OPC


Master of Computer Science (M. Comp. Sc.)

2005 - 2008 (3 years)

Dipl. Inform. FH

1994 - 1999 (5 years)


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