Mention how to use the global seed

Henri Vuollekoski · Henri Vuollekoski · commit 3c7773b21da4 · 2018-05-31T08:44:14.000+03:00
diff --git a/tutorial.ipynb b/tutorial.ipynb
@@ -644,7 +644,7 @@
     "\n",
     "A common optional keyword argument, accepted by all inference methods, `batch_size` defines how many simulations are performed in each passing through the graph. \n",
     "\n",
-    "Another optional keyword is the seed. This ensures that the outcome will be always the same for the same data and model. If you leave it out, a random seed will be taken."
+    "Another optional keyword is the seed. This ensures that the outcome will be always the same for the same data and model. If you leave it out, a random seed will be taken. Giving `seed='global'` will use the global numpy seed."
    ]
   },
   {

Original file line number	Diff line number	Diff line change
`@@ -644,7 +644,7 @@`
`644`	`644`	`"\n",`
`645`	`645`	"A common optional keyword argument, accepted by all inference methods, `batch_size` defines how many simulations are performed in each passing through the graph. \n",
`646`	`646`	`"\n",`
`647`		`- "Another optional keyword is the seed. This ensures that the outcome will be always the same for the same data and model. If you leave it out, a random seed will be taken."`
	`647`	+ "Another optional keyword is the seed. This ensures that the outcome will be always the same for the same data and model. If you leave it out, a random seed will be taken. Giving `seed='global'` will use the global numpy seed."
`648`	`648`	`]`
`649`	`649`	`},`
`650`	`650`	`{`