How many X's do you know'' surveys - Columbia University

More documents

Recommendations

Info

Overview Social and political polarization Background: how many people do you know? Learning from “How many X’s do you know” surveys Next 3 models Fitting our model Results: how many people do you know? Results: group sizes and overdispersions Confidence building and model extensions Bayesian inference ◮ Negative-binomial data model allowing overdispersion ◮ Hierarchical models for gregariousness, group-size, and overdispersion parameters ◮ 1370 + 32 + 32 + 4 parameters to estimate ◮ Computation using the Gibbs/Metropolis sampler ◮ Adaptive (self-tuning) algorithm implemented using Jouni Kerman’s Umacs function in R Gelman, DiPrete, Salganik, Teitler, Zheng Studying polarization using surveys
Overview Social and political polarization Background: how many people do you know? Learning from “How many X’s do you know” surveys Next The overdispersed model 3 models Fitting our model Results: how many people do you know? Results: group sizes and overdispersions Confidence building and model extensions ◮ data model: y ik ∼ Negative-binomial(e α i +β k , ω k ), for i = 1, . . . , 1370, k = 1, . . . , 32 ◮ prior dists ◮ α i ∼ N(µ α , σα), 2 for i = 1, . . . , 1370 ◮ β k ∼ N(µ β , σβ 2 ), for k = 1, . . . , 32 ◮ ω k ∼ U(1, 20), for k = 1, . . . , 32 ◮ hyperprior dist: p(µ α , µ β , σ α , σ β ) ∝ 1 ◮ 1370 + 32 + 32 + 4 parameters to estimate ◮ Nonidentifiability in α + β (to be discussed soon) Gelman, DiPrete, Salganik, Teitler, Zheng Studying polarization using surveys
Page 1 and 2:
Overview Social and political polar
Page 3 and 4:
Page 5 and 6:
Page 7 and 8:
Page 9 and 10:
Page 11 and 12:
Page 13 and 14:
Page 15 and 16:
Page 17 and 18:
Page 19 and 20:
Page 21 and 22:
Page 23 and 24:
Page 25 and 26:
Page 27 and 28:
Page 29 and 30:
Page 31 and 32:
Page 33 and 34: Overview Social and political polar
Page 83: Overview Social and political polar
Page 135 and 136:
Page 137 and 138:
Page 139 and 140:
Page 141 and 142:
Page 143 and 144:
Page 145 and 146:
Page 147 and 148:
Page 149 and 150:
Page 151 and 152:
Page 153 and 154:
Page 155 and 156:
Page 157 and 158:
Page 159 and 160:
Page 161 and 162:
Page 163 and 164:
Page 165 and 166:
Page 167 and 168:
Page 169 and 170:
Page 171 and 172:
Page 173 and 174:
Page 175 and 176:
Page 177 and 178:
Page 179 and 180:
Page 181 and 182:
Page 183 and 184:
Page 185 and 186:
Page 187 and 188:
Page 189 and 190:
Page 191 and 192:
Page 193 and 194:
Page 195 and 196:
Page 197 and 198:
Page 199 and 200:
Page 201 and 202:
Page 203 and 204:
Page 205 and 206:
Page 207 and 208:
Page 209 and 210:
Page 211 and 212:
Page 213 and 214:
Page 215 and 216:
Page 217 and 218:
Page 219 and 220:
Page 221 and 222:
Page 223 and 224:
Page 225 and 226:
Page 227 and 228:
Page 229 and 230:
Page 231 and 232:
Page 233 and 234:
Page 235 and 236:
Page 237 and 238:
Page 239 and 240:
Page 241 and 242:
Page 243 and 244:
Page 245 and 246:
Page 247 and 248:
Page 249 and 250:
Page 251 and 252:
Page 253 and 254:
Page 255 and 256:
Page 257:
show all

How many X's do you know'' surveys - Columbia University

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?