• for: James Hansen - 2023 paper, key insight - James Hansen, leverage point - emergence of new 3rd political party, leverage point - youth in politics, climate change - politics, climate crisis - politics

• Key insight: James Hansen

  • The key insight James Hansen conveys is that
    • the key to rapid system change is
      • WHAT? the rapid emergence of a new, third political party that does not take money from special interest lobbys.
      • WHY? Hit the Achilles heel of the Fossil Fuel industry
      • HOW? widespread citizen / youth campaign to elect new youth leaders across the US and around the globe
      • WHEN? Timing is critical. In the US,
        • Don't spoil the vote for the two party system in 2024 elections. Better to have a democracy than a dictatorship.
        • Realistically, likely have to wait to be a contender in the 2028 election.

• reference

  • paper - Global Warming in the Pipeline
    • https://hyp.is/go?url=https%3A%2F%2Facademic.oup.com%2Foocc%2Farticle%2F3%2F1%2Fkgad008%2F7335889&group=world
  • Michael Mann's critique of the paper
    • https://hyp.is/go?url=https%3A%2F%2Fmichaelmann.net%2Fcontent%2Fcomments-new-article-james-hansen&group=world

From Onsets and Frames paper

"we define the weighted frame loss as:

$$L_{frame}(l,p) = \begin{cases} c L'_{frame}(l,p) & t_1 \leq t \leq t_2 \\ \frac{c}{t-t_2} L'_{frame}(l,p) & t_2 < t \leq t_3 \\ L'_{frame}(l,p) & \text{ elsewhere } \end{cases}$$

where c = 5.0 as determined with coarse hyperparameter search."

From Onsets and Frames paper

"We also use the thresholded output of the onset detector during the inference process, similar to concurrent research described in [24]. An activation from the frame detector is only allowed to start a note if the onset detector agrees that an onset is present in that frame."

From referenced paper [24]

"Finally, we peak pick the two-channel activation matrix to convert the framewise piano roll to a list of note events. Per note, we step through each time frame and place an onset at positions where the articulation channel is above a set threshold, and then include all frames onward until the sustain channel is under another fixed threshold, at which point we output an offset. If a new articulation is found during an active note event we simply fragment it by outputting additional offsets and onsets."

where articulation channel refers to the parallel piano-roll channel where only note frames corresponding to note onsets are active, so here onset labels (onsets = articulations in authors' lingo), and sustain channel would be our frame-level predictions corresponding to note-level frame labels.