def create_paper(paper_id, paper_title, paper_abstract, paper_year, paper_citations):
    """Initialize a paper."""
    paper = {
        "id": paper_id,
        "title": paper_title,
        "abstract": paper_abstract,
        "year": paper_year,
        "is_influential": False,
        "citations": paper_citations,
        "cluster": 0,
        "references": [],
        "authors": []
    }
    return paper