1 Introduction
1.1 Challenges
1.2 Approach and contributions
2 Related work
2.1 Identifying influencers and prominent users
2.2 Identifying groups of users
2.3 Identifying contexts
3 Definitions
3.1 Contexts and context networks
3.2 User relevance metrics
4 Activists discovery strategy
5 Technical approach
5.1 Harvesting new activists
Context name | Period (2018) | Nodes | Edges | Density | Avg degree | Assortativity |
---|---|---|---|---|---|---|
16 days of action | 11-25 / 12-10 | 396 | 349 | 0.002 | 1.8 | − 0.1 |
Elf day | 12-03 / 12-12 | 365 | 436 | 0.003 | 2.4 | − 0.2 |
Dry january | 01-01 / 01-31 | 235 | 234 | 0.004 | 2.0 | − 0.3 |
Cervical cancer prevention week | 01-21 / 01-27 | 209 | 192 | 0.004 | 1.8 | − 0.1 |
Time to talk day | 02-06 / 02-07 | 268 | 231 | 0.003 | 1.7 | − 0.2 |
Eating disorder awareness week | 02-25 / 03-03 | 256 | 241 | 0.004 | 1.9 | − 0.2 |
Rare disease day | 02-28 / 03-01 | 294 | 206 | 0.002 | 1.4 | − 0.2 |
Ovarian cancer awareness month | 03-01 / 03-31 | 215 | 202 | 0.004 | 1.9 | − 0.4 |
Nutrition and hydration week | 03-11 / 03-17 | 273 | 326 | 0.004 | 2.4 | − 0.3 |
Brain awareness week | 03-11 / 03-17 | 307 | 281 | 0.003 | 1.8 | − 0.1 |
No smoking day | 03-13 / 03-14 | 254 | 219 | 0.003 | 1.7 | − 0.3 |
Epilepsy awareness purple day | 03-26 / 03-27 | 306 | 252 | 0.003 | 1.6 | − 0.2 |
Experience of care week | 04-23 / 04-27 | 176 | 196 | 0.006 | 2.2 | − 0.1 |
Brain injury week | 05-01 / 05-31 | 238 | 306 | 0.005 | 2.6 | − 0.1 |
Mental health awareness week | 05-14 / 05-20 | 268 | 245 | 0.003 | 1.8 | − 0.5 |
Dementia action week | 05-21 / 05-31 | 300 | 300 | 0.003 | 2.0 | − 0.0 |
Mnd awareness month | 06-01 / 06-30 | 141 | 234 | 0.012 | 3.3 | − 0.3 |
Wear purple for jia | 06-01 / 06-30 | 165 | 245 | 0.009 | 3.0 | − 0.5 |
Carers week | 06-11 / 06-17 | 270 | 277 | 0.004 | 2.1 | 0.0 |
National dementia carers | 09-09 / 09-10 | 184 | 177 | 0.005 | 1.9 | − 0.2 |
Mens health week | 06-11 / 06-17 | 264 | 214 | 0.003 | 1.6 | − 0.2 |
Stress awareness day | 11-07 / 11-08 | 293 | 209 | 0.002 | 1.4 | − 0.2 |
National dyslexia week | 10-01 / 10-07 | 229 | 235 | 0.004 | 2.1 | − 0.2 |
Ocd awareness week | 10-07 / 10-13 | 202 | 193 | 0.005 | 1.9 | − 0.6 |
Jeans for genes day | 09-21 / 09-22 | 246 | 325 | 0.005 | 2.6 | − 0.2 |
5.2 Computing user features and ranking
5.3 New contexts discovery
6 Evaluation
6.1 Case study 1: UK health campaigns
6.1.1 Contexts and networks
6.1.2 Community discovery
Metric | DEMON | Infomap |
---|---|---|
Fraction of networks with no communities | 0.52 | 0.0 |
Number of communities per context (avg) | 1.92 | 18.88 |
Fraction of network users added to the DB (avg) | 0.06 | 0.59 |
Fraction of repeat users added to the DB across networks | 0.28 | 0.37 |
6.1.3 Users discovery
Username | Name | Follower rank | Participations |
---|---|---|---|
alzheimerssoc | Alzheimer’s Society | 0.99 | 4 |
dementiauk | Dementia UK | 0.98 | 4 |
mentalhealth | Mental Health Fdn | 0.97 | 3 |
colesmillerllp | Coles Miller LLP | 0.65 | 3 |
jeremy_hunt | Jeremy Hunt | 1.0 | 2 |
nhsengland | NHS England | 0.99 | 2 |
carersuk | Carers UK | 0.95 | 2 |
rdash_nhs | RDaSH NHS FT | 0.88 | 2 |
alzsocseengland | Alzheimer’s Society - South ... | 0.64 | 2 |
mndassoc | MND Association | 0.64 | 2 |
6.1.4 Users ranking
Ranking 1 | Ranking 2 | Ranking 3 | |||||||
---|---|---|---|---|---|---|---|---|---|
# | User | On-topic | Individual | User | On-topic | Individual | User | On-topic | Individual |
1 | homesnutrition | X | johnneustadt | X | johnneustadt | X | |||
2 | ficajones | X | X | jo_millar27 | X | X | solutions777 | X | X |
3 | helenvweaver | X | X | hatchbrenner | kingste29344921 | X | X | ||
4 | spriggsnutri | X | nchawkes | X | X | daisylu1964 | X | ||
5 | critcarelthtr | X | moz0373runner | X | X | zakariamarsli | X | X | |
6 | danielleroisin_ | X | X | aimsonhealth | X | X | meowaaaaaa | X | |
7 | mynameisandyj | X | X | wordsharkv5 | X | vecta67 | X | ||
8 | fionaliu92 | X | X | fullcircle_play | X | cosfordfamily1 | X | X | |
9 | ldpartnership | X | qsprivatehealth | X | hayleycorriganx | X | |||
10 | milaestevam1 | X | socialissp | jhbrasfie | X |
6.1.5 Context harvesting
# | Topic | Correlated hashtags |
---|---|---|
1 | #uk | #borisjohnson, #eds, #maimes, #me, #pacetrial, #pwme |
2 | #internationalnursesday | #ind2019, #internationalnursesday, #nursesday, #nursesday2019, #teamwhh |
3 | #uk | #eds, #maimes, #me, #pacetrial, #pwme |
4 | #neuroscience | #fens, #frm2019, #training |
5 | #dementia | #daw2019, #dementiaactionweek, #dementiaawarenessweek |
6 | #carers | #carersweek, #carersweek2019, #caring |
7 | #braininjury | #abiweek, #fatigue, #hatsforheadway |
8 | #genderequality | #metoo, #thepowerof, #wd2019 |
9 | #mentalhealthawarenessweek | #mentalhealthawarenessweek, #mhaw19 |
10 | #epilepsy | #purpleday, #seizures |
Candidate Context Ranking 5 | ||||||
---|---|---|---|---|---|---|
# | Topic | Hashtags list | Start date | End date | On-context | On-topic |
1 | #valentinesday | #valentinesday | 02-04 | 02-18 | X | |
2 | #easter | #easter | 04-01 | 04-24 | X | |
3 | #internationalwomensday | #balanceforbetter, #internationalwomensday, #iwd19, #iwd2019 | 03-02 | 03-13 | X | X |
4 | #mentalhealthawarenessweek | #bebodykind, #mentalhealthawarenessweek | 05-06 | 05-21 | X | X |
5 | #worldbookday | #worldbookday | 03-05 | 03-08 | X | |
6 | #cancer | #worldcancerday | 01-30 | 02-07 | X | X |
7 | #leeds | #bluemonday | 01-21 | 01-21 | X | X |
8 | #mothersday | #fathersday | 06-10 | 06-18 | X | |
9 | #mentalhealth | #timetotalk, #timetotalkday | 01-30 | 02-08 | X | X |
10 | #nhs | #nottinghamshire, #volunteers, #volunteersweek, #volunteersweek2019 | 05-28 | 06-12 | X | X |
6.2 Case study 2: Italian COVID-19 related initiatives
Context name | Period (2020) | Nodes | Edges | Density | Avg degree | Assortativity |
---|---|---|---|---|---|---|
Musei chiusi musei aperti | 02-25 / 03-31 | 192 | 341 | 0.009 | 3.6 | − 0.1 |
Non farti influenzare | 02-27 / 03-31 | 24 | 41 | 0.074 | 3.4 | 0.9 |
Confcommercio ce | 02-27 / 03-31 | 80 | 132 | 0.021 | 3.3 | − 0.3 |
Italia non si ferma | 02-28 / 03-31 | 177 | 169 | 0.005 | 1.9 | − 0.4 |
Regioni non si fermano | 02-28 / 03-08 | 199 | 163 | 0.004 | 1.6 | − 0.2 |
Solidarieta digitale | 02-28 / 03-31 | 209 | 285 | 0.007 | 2.7 | − 0.4 |
Cultura non si ferma | 03-01 / 03-31 | 180 | 195 | 0.006 | 2.2 | − 0.2 |
Musica non si ferma | 03-01 / 03-31 | 161 | 180 | 0.007 | 2.2 | − 0.4 |
Io resto a casa | 03-07 / 03-31 | 294 | 205 | 0.002 | 1.4 | − 0.1 |
Allenati a casa | 03-08 / 03-31 | 105 | 105 | 0.01 | 2.0 | − 0.4 |
Suono da casa | 03-08 / 03-31 | 159 | 148 | 0.006 | 1.9 | − 0.3 |
Campagna non si ferma | 03-09 / 03-31 | 85 | 114 | 0.016 | 2.7 | − 0.2 |
Spesa a domicilio | 03-10 / 03-31 | 77 | 100 | 0.017 | 2.6 | 0.1 |
Leggo da casa | 03-10 / 03-31 | 217 | 220 | 0.005 | 2.0 | − 0.2 |
Ripartiamo insieme | 03-10 / 03-31 | 98 | 135 | 0.014 | 2.8 | 0.2 |
Avis campaign | 03-11 / 03-31 | 174 | 176 | 0.006 | 2.0 | − 0.5 |
Voi restate a casa | 03-12 / 03-31 | 208 | 210 | 0.005 | 2.0 | − 0.5 |
Insieme per il paese | 03-13 / 03-31 | 100 | 195 | 0.02 | 3.9 | − 0.5 |
Dl curaitalia | 03-16 / 03-31 | 217 | 199 | 0.004 | 1.8 | − 0.4 |
Csv italia | 03-17 / 03-31 | 23 | 21 | 0.041 | 1.8 | − 0.6 |
La cultura in casa | 03-18 / 03-31 | 149 | 184 | 0.008 | 2.5 | − 0.2 |
Poesie in quarantena | 03-19 / 03-31 | 105 | 105 | 0.01 | 2.0 | − 0.7 |
Aiutiamo gli eroi | 03-26 / 03-31 | 29 | 35 | 0.043 | 2.4 | − 0.7 |
Ero in corsia | 03-27 / 03-31 | 2 | 1 | 0.5 | 1.0 | NaN |
Username | Name | Follower rank | Participations |
---|---|---|---|
youtube | YouTube at | 1.0 | 6 |
marino29b | marino29b | 0.66 | 5 |
repubblica | Repubblica | 1.0 | 4 |
comunemi | Comune di Milano | 1.0 | 4 |
_mibact | MiBACT | 0.97 | 4 |
mise_gov | MISE | 1.0 | 3 |
giuseppeconteit | Giuseppe Conte | 1.0 | 3 |
sanremoanchenoi | Sanremo anche noi | 0.98 | 3 |
artdielle | Arturo D.L. | 0.83 | 3 |
casalettori | Casa Lettori | 0.69 | 3 |
adelestancati | adele stancati | 0.64 | 3 |
Ranking 3 | |||
---|---|---|---|
# | User | On-topic | Individual |
1 | ileniacostanza2 | X | |
2 | gabbianorp | X | |
3 | mattecurvasudm1 | X | |
4 | laura40805025 | X | X |
5 | aleseminati | X | X |
6 | lapazzariel | X | X |
7 | robbi00698088 | X | |
8 | losateresa | X | X |
9 | andreal79733639 | X | X |
10 | elisanucera | X |
6.2.1 Users ranking
# | Topic | Correlated hashtags |
---|---|---|
1 | #coronavirus | #coronavirus, #covid19, #covid_19, #covid-19, #fase2 |
2 | #coronavirus | #coronavirus, #covid19, #covid_19, #covid-19, #pasqua |
3 | #coronavirus | #coronavirus, #covid19, #covid_19, #fase2, #italia |
4 | #25aprile | #25aprile, #liberazione, #25aprile2020, #festadellaliberazione, #bellaciao |
5 | #25aprile | #25aprile, #liberazione, #25aprile2020, #bellaciao, #iorestolibero |
6 | #25aprile | #25aprile, #25aprile2020, #festadellaliberazione, #bellaciao, #resistenza |
7 | #conte | #conte, #mes, #salvini, #governo, #lega |
8 | #iorestoacasa | #iorestoacasa, #artyouready, #andràtuttobene, #granvirtualtour, #viaggioinitalia |
9 | #iorestoacasa | #iorestoacasa, #andràtuttobene, #granvirtualtour, #iorestocasa, #museichiusimuseiaperti |
10 | #iorestoacasa | #iorestoacasa, #granvirtualtour, #iorestocasa, #museichiusimuseiaperti, #lartetisomiglia |
Candidate Context Ranking 5 | ||||||
---|---|---|---|---|---|---|
# | Topic | Hashtags list | Start date | End date | On context | On topic |
1 | #coronavirus | #coronavirus, #covid19, #covid_19, #covid-19, #fase2 | 04-01 | 04-29 | X | X |
2 | #coronavirus | #coronavirus, #covid19, #covid_19, #covid-19, #pasqua | 04-01 | 04-29 | X | X |
3 | #coronavirus | #coronavirus, #covid19, #covid_19, #fase2, #italia | 04-01 | 04-29 | X | X |
4 | #25aprile | #25aprile, #liberazione, #25aprile2020, #festadellaliberazione, #bellaciao | 04-18 | 04-28 | X | |
5 | #25aprile | #25aprile, #liberazione, #25aprile2020, #bellaciao, #iorestolibero | 04-18 | 04-28 | X | |
6 | #iorestoacasa | #iorestoacasa, #viaggioinitalia, #museichiusimuseiaperti | 04-01 | 04-29 | X | X |
7 | #25aprile | #25aprile, #25aprile2020, #festadellaliberazione, #bellaciao, #resistenza | 04-18 | 04-28 | X | |
8 | #milano | #milano | 04-01 | 04-29 | ||
9 | #conte | #conte, #mes, #salvini, #governo, #lega | 04-01 | 04-29 | X | |
10 | #iorestoacasa | #iorestoacasa, #andràtuttobene, #museichiusimuseiaperti, #lartetisomiglia | 04-01 | 04-29 | X | X |