Table 1.
Basic statistics for the three data sources.
Fig 1.
The answer rate of questions being asked each year on Sec SO, Sec SE and Sec Reddit.
Black curves are Sec SO, Red curves are Sec SE, Purple curves are Sec Reddit.
Table 2.
Aggregate statistics of the answer rate of questions in each site.
Fig 2.
The median answer latency of questions being asked each year on Sec SO, Sec SE and Sec Reddit.
Black curves are Sec SO, Red curves are Sec SE, Purple curves are Sec Reddit.
Table 3.
Aggregate statistics of the answer latency (in minutes) of questions in each site.
Fig 3.
Question answering behavior for questions being asked per year on Sec SO, Sec SE and Sec Reddit.
Black curves are Sec SO, Red curves are Sec SE, Purple curves are Sec Reddit.
Table 4.
Aggregate statistics of the question answering behavior.
Table 5.
Aggregate statistics of the number of unique questioner/answerer in each site.
Fig 4.
Participation behavior of contributors per year on Sec SO, Sec SE and Sec Reddit.
Black curves are Sec SO, Red curves are Sec SE, Purple curves are Sec Reddit.
Table 6.
Aggregate statistics of the contributor behavior.
Table 7.
Two tailed P-value for the statistics of the questions asked per questioner.
Table 8.
Aggregate statistics of distributions across the three sites of answerers answering different number of unique questions.
Table 9.
The manual classification result of the distributions of the four types of questions in each Q&A site.
Table 10.
Cosine similarity(in-domain) of average SentBert embeddings between questions asked in different years of each site.
Table 11.
Cosine similarity(across-domain) of average SentBert embeddings between questions asked in same year of different sites.
Fig 5.
The Venn diagram of the most frequent 100 words of each site.
Fig 6.
The popularity trends per month for Sec SO, Sec SE, and Sec Reddit.
The trend curves are Loess curve with 0.1 spin. Black curves are Sec SO, Red curves are Sec SE, Purple curves are Sec Reddit.
Fig 7.
Schematic diagram of migrating behavior.
Table 12.
The statistics of contributor migration behaviors.
Table 13.
The migration behaviors and reasons reported by survey participants.
Fig 8.
The agreement of participants using each site for four types of questions and their corresponding answers.