Create walkthrough video and add a link to README.

README.md

@@ -10,7 +10,11 @@ learning with challenging dynamic environments.  The package facilitates
 developing, testing, benchmarking, and teaching causal inference and sequential
 decision making tools.
 
-For more detailed information, check out the [documentation](https://whynot-docs.readthedocs-hosted.com/en/latest/).
+For an introduction to WhyNot and a brief tutorial, see our [walkthrough
+video](https://youtu.be/QKrqJ9r7Okg). 
+For more detailed information, check out the
+[documentation](https://whynot-docs.readthedocs-hosted.com/en/latest/).
+
 
 ## Table of Contents
 1. [Basic installation instructions](#basic-installation-instructions)
@@ -59,7 +63,7 @@ First, we examine all of the experiments available for World3.
 import whynot as wn
 experiments = wn.world3.get_experiments()
 print([experiment.name for experiment in experiments])
-#['world3_rct', 'world3_pollution_confounding', 'world3_pollution_unobserved_confounding', 'world3_pollution_mediation']
+#['PollutionRCT', 'PollutionConfounding', 'PollutionUnobservedConfounding', 'PollutionMediation']
 ```
 These experiments generate datasets both in the setting of a pure randomized
 control trial (`world3_rct`), as well as with (unobserved) confounding and

whynot/dynamics.py

@@ -954,3 +954,7 @@ def run(
             true_effects=treatment_effects,
             causal_graph=graph,
         )
+
+    def __repr__(self):
+        """Display the experiment by it's name."""
+        return self.name

whynot/simulators/hiv/experiments.py

@@ -31,7 +31,7 @@ def sample_initial_states(rng):
 # pylint: disable-msg=invalid-name
 #: Experiment on effect of increased drug efficacy on infected macrophages (cells/ml)
 HIVRCT = DynamicsExperiment(
-    name="hiv_rct",
+    name="HIVRCT",
     description="Study effect of increased drug efficacy on infected macrophages (cells/ml).",
     simulator=hiv,
     simulator_config=hiv.Config(epsilon_1=0.1, start_time=0, end_time=150),
@@ -70,7 +70,7 @@ def hiv_confounded_propensity(untreated_run, treatment_bias):
 # pylint: disable-msg=invalid-name
 #: Experiment on effect of increased drug efficacy on infected macrophages with confounding
 HIVConfounding = DynamicsExperiment(
-    name="hiv_confounding",
+    name="HIVConfounding",
     description=(
         "Study effect of increased drug efficacy on infected macrophages (cells/ml). "
         "Units with high immune response and free virus are more likely to be treated."

whynot/simulators/world3/experiments.py

@@ -54,7 +54,7 @@ def random_scale(scale, base=10):
 # pylint: disable-msg=invalid-name
 #: An RCT experiment to study the effect of decreases in pollution generation on population.
 PollutionRCT = DynamicsExperiment(
-    name="world3_rct",
+    name="PollutionRCT",
     description="Study effect of intervening in 1975 to decrease pollution generation.",
     simulator=world3,
     simulator_config=world3.Config(persistent_pollution_generation_factor=1.0),
@@ -74,8 +74,8 @@ def random_scale(scale, base=10):
 @parameter(
     name="treatment_bias",
     default=0.8,
-    values=np.linspace(0.5, 0.05, 1),
-    description="Bias of probability of treatment between top and bottom pollution runs.",
+    values=np.linspace(0.5, 1.0, 5),
+    description="Treatment probability bias between low and high pollution runs.",
 )
 def pollution_confounded_propensity(intervention, untreated_runs, treatment_bias):
     """Probability of treating each unit.
@@ -100,9 +100,9 @@ def treatment_prob(idx):
 # pylint: disable-msg=invalid-name
 #: An observational experiment with confounding. Polluted states are more likely to be treated.
 PollutionConfounding = DynamicsExperiment(
-    name="world3_pollution_confounding",
+    name="PollutionConfounding",
     description=(
-        "Study effect of intervening to decrease pollution.  Confounding "
+        "Study effect of intervening to decrease pollution on total population. Confounding "
         "arises becauses states with high pollution are more likely "
         "to receive treatment."
     ),
@@ -121,7 +121,7 @@ def treatment_prob(idx):
 # pylint: disable-msg=invalid-name
 #: An observational experiment with unobserved confounding.
 PollutionUnobservedConfounding = DynamicsExperiment(
-    name="world3_pollution_unobserved_confounding",
+    name="PollutionUnobservedConfounding",
     description=(
         "Study effect of intervening to decrease pollution.  Confounding "
         "arises becauses states with high pollution are more likely "
@@ -168,7 +168,7 @@ def mediation_covariates(intervention, run, mediation_year, num_mediators):
 # pylint: disable-msg=invalid-name
 #: An observational experiment with mediation from states after intervention.
 PollutionMediation = DynamicsExperiment(
-    name="world3_pollution_mediation",
+    name="PollutionMediation",
     description=(
         "Study effect of intervening to decrease pollution.  Confounding "
         "arises becauses states with high pollution are more likely "

whynot/simulators/zika/experiments.py

@@ -37,7 +37,7 @@ def mixed_treatment_intervention():
 # pylint: disable-msg=invalid-name
 #: Experiment on effect of mixed treatment policy on infections in 20 days
 ZikaRCT = DynamicsExperiment(
-    name="hiv_rct",
+    name="ZikaRCT",
     description="Study effect of mixed treatment policy on infections in 20 days.",
     simulator=zika,
     simulator_config=zika.Config(start_time=0, end_time=20),

whynot/simulators/zika/simulator.py

@@ -85,7 +85,7 @@ class Config(BaseConfig):
     #: Simulation end time (in days)
     end_time: float = 100
     #: How frequently to measure simulator state
-    delta_t: float = 0.05
+    delta_t: float = 1.0
     #: solver relative tolerance
     rtol: float = 1e-6
     #: solver absolute tolerance