view rdfpy/writeTimbreToolbox.py @ 18:d5012016bf64 tip

added rdfpy and rdfonto directories

import rdflib, os, fnmatch, urllib2
from rdflib import Graph, RDF, RDFS, plugin, URIRef, Literal, OWL, XSD, Namespace

graph = Graph()

af = Namespace('http://sovarr.c4dm.eecs.qmul.ac.uk/features/')
graph.bind('local', af)

dc = Namespace('http://purl.org/dc/elements/1.1/')
graph.bind('dc', dc)

input = {
    'au': "Audio Signal",
    'tee': "Temporal Energy Envelope",
    'stft': "Short-term Fourier Transform",
    'erb': "Auditory model",
    'harm': "Harmonic"
}

features = {
    'Global Descriptors': [
        {"Attack": "tee"},
        {"Decay": "tee"},
        {"Release": "tee"},
        {"Log-Attack Time": "tee"},
        {"Attack Slope": "tee"},
        {"DecreaseSlope": "tee"},
        {"Temporal Centroid": "tee"},
        {"Effective Duration": "tee"},
        {"Frequency of Energy Modulation": "tee"},
        {"Amplitude of Energy Modulation": "tee"}
    ],

    'Time-Varying Descriptors': [
        {"Autocorrelation": 'au'},
        {"Zero Crossing Rate": 'au'},
        {"RMS-Energy Envelope": 'tee'},
        {"Spectral Centroid": 'stft,erb,harm'},
        {"Spectral Spread": 'stft,erb,harm'},
        {"Spectral Skewness": 'stft,erb,harm'},
        {"Spectral Kurtosis": 'stft,erb,harm'},
        {"Spectral Slope": 'stft,erb,harm'},
        {"Spectral Decrease": 'stft,erb,harm'},
        {"Spectral Rolloff": 'stft,erb,harm'},
        {"Spectro-temporal Variation": 'stft,erb,harm'},
        {"Spectral Flatness": 'stft,erb'},
        {"Spectral Crest": 'stft,erb'},
        {"Harmonic Energy": 'harm'},
        {"Noise Energy": 'harm'},
        {"Noisiness": 'harm'},
        {"Fundamental Frequency": 'harm'},
        {"Inharmonicity": 'harm'},
        {"Tristimulus": 'harm'},
        {"Harmonic Spectral Deviation": 'harm'},
        {"Odd to even harmonic ratio": 'harm'}
    ]
}

for temporal in features.keys():
    for feature in features[temporal]:
        name = feature.keys()[0]
        id = af + name.replace(" ", "")
        graph.add((
            URIRef(id),
            RDF.type,
            RDFS.Resource
        ))
        graph.add((
            URIRef(id),
            af['feature'],
            Literal(name)
        ))
        graph.add((
            URIRef(id),
            af['feature'],
            Literal(name)
        ))
        for inp in feature[name].split(","):
            graph.add((
                URIRef(id),
                af['signal'],
                Literal(input[inp])
            ))
            

graph.serialize('/Users/alo/MusicOntology/features/rdf/af-TimbreToolbox.rdf')
graph.serialize('/Users/alo/MusicOntology/features/rdfn3/af-TimbreToolbox.n3', format="n3")