How healthy are DocEng, JCDL and UMAP series of conferences?

Swati Agarwal 0001, Nitish Mittal, Ashish Sureka. How healthy are DocEng, JCDL and UMAP series of conferences?. SIGWEB Newsletter, 2017(Summer), 2017. [doi]

@article{0001MS17a,
  title = {How healthy are DocEng, JCDL and UMAP series of conferences?},
  author = {Swati Agarwal 0001 and Nitish Mittal and Ashish Sureka},
  year = {2017},
  doi = {10.1145/3110394.3110399},
  url = {http://doi.acm.org/10.1145/3110394.3110399},
  researchr = {https://researchr.org/publication/0001MS17a},
  cites = {0},
  citedby = {0},
  journal = {SIGWEB Newsletter},
  volume = {2017},
  number = {Summer},
}