@@ -269,55 +269,84 @@ they first used a modern family planning method.
269269| In Degree | 1.04 | 1.06\*\* | 1.02\* |
270270| Exposure (Cohesion) | 0.94 | 1.16 | 2.16\*\* |
271271
272+ ## Simulating diffusion
273+
274+ - Seeds:
275+ - Type (central, bridging, marginal, random, etc.)
276+ - Size (e.g., 5%, 10%, 15%)
277+
278+ - Network structure:
279+ - Random
280+ - Small world
281+ - Empirical
282+ - Scale-free (centralized)
283+ - Attribute-based (e.g., homophily)
284+
285+ - Threshold distribution:
286+ - Uniform
287+ - Normal (varying variance)
288+ - Skewed
289+ - Beta
290+
291+ - Mechanism:
292+ - Cohesion
293+ - Structural equivalence
294+ - Indirect ties
295+ - Attribute-based (e.g., homophilous more persuasive)
296+
297+ - Adoption behavior:
298+ - No-disadoption
299+ - Disadoption
300+ - Conflicting behaviors (perhaps coded as -1,0, 1)
301+ - Incorporate uncertainty
302+
303+ ## Reading Data Challenges
272304
305+ - Merging attribute and network data
273306
307+ - Nominated but no attribute data
274308
309+ - Attribute data no network data
275310
311+ - Data file formats
276312
313+ - Single flat file
277314
315+ - 2 files: edgelist and attribute file (flat)
278316
317+ - Cohort studies: 1 file separate waves of data
279318
319+ ## Formats
280320
321+ - Survey Data (static & dynamic)
281322
323+ - Edge-list and Attribute data
282324
325+ - Panel Data
283326
327+ - STATNET, Igraph, ....
284328
329+ ## Input Types: Single Flat File
285330
331+ - Flat File with IDs, Nodelist, and Time of Adoption
332+ - Typically a retrospective study
333+ - Examples, Medical Innovation, Korean Family Planning; Brazilian Farmers
286334
335+ ![ ] ( figs/slides-single-flat.png ) {width="40%"}
287336
337+ ## Input Types: Double Files
288338
339+ - Files will have mostly matching IDs
340+ - One or both files may contain time information
341+ - Edgelist may also, potentially, contain values or spell information
289342
343+ ![ ] ( figs/slides-double-files.png ) {width="80%"}
290344
291- Simulating Diffusion
292-
293- Reading Data Challenges
294-
295- - Merging attribute and network data
296-
297- - Nominated but no attribute data
298-
299- - Attribute data no network data
300-
301- - Data file formats
302-
303- - Single flat file
304-
305- - 2 files: edgelist and attribute file (flat)
306-
307- - Cohort studies: 1 file separate waves of data
308-
309- Formats
310-
311- - Survey Data (static & dynamic)
312-
313- - Edge-list and Attribute data
314-
315- - Panel Data
316-
317- - STATNET, Igraph, ....
318345
319- Input Types: Single Flat File
346+ ## Input Types: Classic Cohort/Longitudinal
320347
321- Input Types: Double Files
348+ - IDs and Nodelist Network data
349+ - Behavior is typically binary (e.g., ever smoked) or potentially valued (e.g., # of cigarettes
350+ - Examples SNS
322351
323- Input Types: Classic Cohort/Longitudinal
352+ ![ ] ( figs/slides-file-long.png ) {width="50%"}
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