Fakhar Khalid

Chief Scientist (CSO) @SenSat_AI; Four things I love the most #Geospatial Science, #AI, #UAVs and #3D data; I work on all four at my job 💜.

[Fakhar Khalid @FakharKhalid]

I feel that #Geospatial Data Industry has been a bit stagnant in terms of true #innovation. There is a lot of exciting work continue to happen in this space. I had a go at exploring how Vector Embeddings will revolutionise the Geospatial Data Industry. https://t.co/xLezwC7oiO

[Fakhar Khalid @FakharKhalid]

@geo_will This is beautiful.

The only time I tried skiing, I broke my ribs 😅😅

Merry Christmas.

[Fakhar Khalid @FakharKhalid]

@mouthofmorrison 😅🔥

[Fakhar Khalid @FakharKhalid]

@robmarkcole Hope all is well.

...and yes, we are very lucky to have the NHS.

[Fakhar Khalid @FakharKhalid]

@helenmakesmaps A very good blog 🙏

In a training sess, many moons ago, we discussed exactly the same issue. I am a big fan of humility, so the title of this book by @stefaniesw was very challenging to accept. It still is. But it has some great tips.

F*ck Being Humble https://t.co/iDkJDIsqTa

[Fakhar Khalid @FakharKhalid]

@geo_will 😅😅😅😅😅

[Fakhar Khalid @FakharKhalid]

@geo_will At first I thought it was a GNSS antenna 🤪

[Fakhar Khalid @FakharKhalid]

@mouthofmorrison @anu_bonth Easy!

[Fakhar Khalid @FakharKhalid]

I have always been a huge fan of Umbra as a leading EO organisation. This is nothing but dominating thought leadership, in the world where data hoarding is a disease. Well done @umbraspace and @mouthofmorrison take a bow 🙇‍♂️

[Umbra @umbraspace]

Umbra shares all data under the Creative Commons license (CC BY 4.0), granting you the freedom to publish images and link the underlying data as needed. The license requires you to credit us ('attribution'), but no need to ever ask us for permission to use.

[Fakhar Khalid @FakharKhalid]

@mouthofmorrison Just a hunch aka gut feeling, but we are on the cusp of exploiting the TRUE potential of EO data; something more than base layers. EO data will & has already started to fuel the analytics of the most powerful systems. How Bloomberg data powered the fintech revolution. Bring it on

[Fermat's Library @fermatslibrary]

Why are square matrices particularly interesting?

Square matrices represent linear maps from a space to itself, which allows for meaningful comparisons between inputs and outputs since they belong to the same space.

For instance, if 𝑓:ℝ⁴→ℝ⁴ it makes sense to ask when 𝑓(a) is parallel to a, since 𝑓(a) and a lie in the same space. However, asking when 𝑔(a) is parallel to a for 𝑔:ℝ⁴→ℝ³ doesn't make any sense, since 𝑔(a) and a are different types of objects.

Another example is the determinant. In square matrices, determinants measure how a linear map alters (either expanding or shrinking) a unit of volume. For instance, the determinant of the transformation (x,y,z)↦(-2x,2y,2z) is -8, indicating an 8-fold increase in volume but with a reversed orientation.

If we try to go from 3D to 2D (2x3 matrix) and use the same idea: how much area does a given volume ends up producing? we run into problems:
- When transitioning from 3D to 2D, the "stretching factor" is not consistent. Take the projection map (𝑥,𝑦,𝑧)↦(𝑥,𝑦), as an example and consider the effects when elongating a volume vertically.
- Transitioning from 2D to 3D invariably results in no volume since the starting dimension is inherently insufficient. Thus, regardless of the transformation, our "stretching factor" invariably remains 0.

Simply put, when dealing with non-square matrices, the concept of the "determinant" can be either poorly defined or trivially zero due to oversimplified reasoning.

[Fakhar Khalid @FakharKhalid]

Back on the saddle, pedaling 160km for @Shelter again, with less training this year but your support is overwhelming! Close to my target in 24hrs. Please donate as much from £1 to a million. I'll power my ride & provides shelter. 2 weeks to go! 🚴🏠🙏

https://t.co/I5NIpGQ1wq

[Fakhar Khalid @FakharKhalid]

@bd_alexander Abomination. Nobody uses an HP monitor anymore! Craziness!

[Fakhar Khalid @FakharKhalid]

@amirhusain_tx Or perhaps they were not getting any reception 😅

[Fakhar Khalid @FakharKhalid]

@KAnderson_RS Congratulations Karen. This is awesome. The impact and influence that you bring to the industry is invaluable, both academia and industry. Really proud to call you a friend. 💚

[Fakhar Khalid @FakharKhalid]

@amirhusain_tx I captured some ants the other day, on camera. Pretty cool.

[Fakhar Khalid @FakharKhalid]

@amirhusain_tx When I zoom in, they are definitely owls, from afar they look like bakray (goats) to me 😅

[Fakhar Khalid @FakharKhalid]

@amirhusain_tx Coffee is my poison (4-5 double espresso), then it's green tea (3 odd). I then consume around 1.5L of water in the evening. More water than hot beverages and plenty of visits to the loo 😅. My coffee is 36g each shot, around 200ml per glass of tea.

What have you made me do 🫣

[Andrew Ng @AndrewYNg]

1/Several leaders share their hopes for AI in 2023, including finding key missing pieces that will enable algorithms to reason, building a personal data timeline, improving AI processes, discovering new principles for explainability, and using generative AI for active learning.

[Fakhar Khalid @FakharKhalid]

@amirhusain_tx 2024 🤞