topic_models = {
    'methodology_a': {
        'vectorizer_corpus': 'corpora/methodology',
        'corpus': 'corpora/all_but_exclude',
        'vocabulary': None,
        'vectorizer_params': {
            'min_df': 3,
            'max_df': 0.90,
            'ngram_range': (1,2)
            },
        'model_params': {
            'n_topics': 10,
            'verbose': 1,
            },
        },

    'methodology_b': {
        'vectorizer_corpus': None,
        'corpus': 'corpora/all_but_exclude',
        'vocabulary': 'methodologies',
        'vectorizer_params': {
            'min_df': 2,
            'max_df': 0.90,
            'ngram_range': (2,3)
            },
        'model_params': {
            'n_topics': 10,
            'verbose': 1,
            },
        },

    'methodology_c': {
        'vectorizer_corpus': None,
        'corpus': 'corpora/all_but_exclude',
        'vocabulary': 'methodologies',
        'exclude_subj_vocab': True,
        'vectorizer_params': {
            'min_df': 2,
            'max_df': 0.90,
            'ngram_range': (2,3)
            },
        'model_params': {
            'n_topics': 10,
            'verbose': 1,
            },
        },

    'subjects_a': {
        'vectorizer_corpus': None,
        'corpus': 'corpora/all_but_exclude',
        'vocabulary': 'keywords',
        'vectorizer_params': {
            'min_df': 3,
            'max_df': 0.95,
            'ngram_range': (2,3)
            },
        'model_params': {
            'n_topics': 20
            },
        },

    'subjects_b': {
        'vectorizer_corpus': None,
        'corpus': 'corpora/all_but_exclude',
        'vocabulary': 'keywords',
        'vectorizer_params': {
            'min_df': 10,
            'max_df': 0.92,
            'ngram_range': (1,2)
            },
        'model_params': {
            'n_topics': 20
            },
        },

    'subjects_c': {
        'vectorizer_corpus': None,
        'corpus': 'corpora/all_but_exclude',
        'vocabulary': 'keywords',
        'vectorizer_params': {
            'min_df': 4,
            'max_df': 0.95,
            'ngram_range': (1,3)
            },
        'model_params': {
            'n_topics': 20
            },
        },
    }
