外刊听力练习 经济学人 tracking the fighting with s

Russia’s invasion of Ukraine have devastated the country.

But the full scale of military activity has been hard to assess

So Sandra (人名) the Economist senior data journalist came up with a plan to penetrate

the fog of war

I figured my comparative advantage would be to look at the war from above.

One worry I had when the war began was that a lot of media outlets were relying on the same sources of information

it ’s pretty easy to see what’s going on in Kiev right now

You have a lot of people there

You have a lot of reporter there

It is slightly harder to see what is going on close to the front line on the Ukrainian side

It is way harder to know what’s going on on the Russian side

And especially deeply in Russian occupied areas

I wanted an independent system

A system that was neutral consistent

 And that could track the fighting without relying on human input

Firms is a satellite surveillance system set up By Nasa to track the forest fires

However it tracks a lot of other fires too

I set up a system that looks at this forest fire data and  

 Tries to figure out if it is really forest fires or any other source of fire

That would happen in peace time or it is related to the fighting

I first said about constructing what we call training data

So this is data from normal years

That The model we use to sort of learn what is supposed to be going on

You need to go back in time and find all sorts of other data

But once you have that you go into the training stage

And that is telling a computer find all the patterns you can in this data

And in my case telling it to do that one hundred times

And then if you plot the abnormal Activity  trends start to appear

This map reveals areas where the fires are active

If you look at where the fires are most concentrated we can see a hot spot in the road to Kiev

And the front line can also be clearly observed.