{'fraction_non_alphanumeric': 0.030805687203791468, 'fraction_numerical': 0.001184834123222749, 'mean_word_length': 5.450381679389313, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 1, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
An XVCL-based Approach to Software Product Line Development

In recent years, software product line approach has emerged as a promising way to improve software productivity and quality. How to effectively handle variants (including functional variants, variant design decisions, implementation-level variants) has been a major challenge in product line development. We apply XVCL (XMLbased Variant Configuration Language), a variability mechanism based on frame technology [1], to product line development. In XVCL, x-frames represent domain knowledge in the forms of product line assets. Specific systems, members of a product line, can be constructed by reusing the x-frames. In this paper, we describe an XVCLbased approach to software product line development, using examples from our product line project on Computer Aided Dispatch domain.