gtrends

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                         'title': 'Medical imaging',
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                        {'mid': '/m/07844',
                         'title': 'Signal processing',
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                        {'mid': '/m/08g1q1',
                         'title': 'Raw image format',
                         'type': 'File Format'},
                        {'mid': '/m/0121sb',
                         'title': 'Astrophotography',
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{'default': {'topics': [{'mid': '/m/07844',
                         'title': 'Signal processing',
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                         'title': 'Digital signal processing',
                         'type': 'Industry'},
                        {'mid': '/m/06dq9',
                         'title': 'Radar',
                         'type': 'Invention'},
                        {'mid': '/m/0146cd',
                         'title': 'Digital signal processor',
                         'type': 'Topic'},
                        {'mid': '/m/0yk6',
                         'title': 'Audio signal processing',
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                         'type': 'Discipline'},
                        {'mid': '/m/0174bv',
                         'title': 'Machine vision',
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                        {'mid': '/m/05kx1v',
                         'title': 'Computer vision syndrome',
                         'type': 'Syndrome'},
                        {'mid': '/m/04q03g',
                         'title': 'Feature detection',
                         'type': 'Computer vision'},
                        {'mid': '/m/04zv0zl',
                         'title': 'International Journal of Computer '
                                  'Vision',
                         'type': 'Journal'}]}}
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                        {'mid': '/m/04fznpq',
                         'title': 'International Conference on Machine '
                                  'Learning',
                         'type': 'Conference'},
                        {'mid': '/m/05czq1',
                         'title': 'Statistical classification',
                         'type': 'Topic'},
                        {'mid': '/m/017chx',
                         'title': 'Overfitting',
                         'type': 'Topic'},
                        {'mid': '/m/0f138r',
                         'title': 'Journal of Machine Learning Research',
                         'type': 'Journal'}]}}
{'default': {'topics': [{'mid': '/m/03y9s',
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                        {'mid': '/m/03d144_',
                         'title': 'Precision and recall',
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                        {'mid': '/m/03ytc',
                         'title': 'Information technology',
                         'type': 'Organization type'},
                        {'mid': '/m/051bzmq',
                         'title': 'Introduction to information retrieval',
                         'type': 'Book by Christopher D.  Manning, '
                                 'Hinrich Schütze, and Prabhakar Raghavan'}]}}
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                         'title': 'Machine learning',
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                        {'mid': '/m/0fqn93h',
                         'title': 'Educational data mining',
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                        {'mid': '/m/01v59d',
                         'title': 'Text mining',
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                        {'mid': '/m/0cqyr9',
                         'title': 'Structure mining',
                         'type': 'Literature Subject'}]}}