rder="1" class="dataframe">
  <thead>
    <tr style="text-align: right;">
      <th></th>
      <th>cite ad</th>
      <th>title</th>
      <th>authors</th>
      <th>publish year</th>
      <th>publish time</th>
      <th>dataset</th>
      <th>abstract mentions covid</th>
      <th>pmcid</th>
      <th>pubmed id</th>
      <th>doi</th>
      <th>cord uid</th>
      <th>topic weight</th>
      <th>Similarity scispacy</th>
      <th>Similarity specter</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <th i