When did the second Intifada end?

I recently read "The End of the Second Intifada?" by Jonathan Schachter (page 63 in the link), which asks when did the second Intifada come to an end. The thesis of the article is that the second Intifada was characterized by suicide bombings, and hence ended when they did. The article hints at another solution:

"It is telling that even these attacks appear to be considered “postsecond-

intifada,” insofar as al-Aqsa Martyrs Brigades and other Fatah

officials threatened to launch a third intifada already in 2005. It is

unlikely that they would make such a threat if they thought the second

intifada were still in progress."

In other words, the second Intifada can be seen as over, when the Palestinians started threatening a third one.