u/ZeroDark_Hereford

I’m working on performance regression detection using machine learning/anomaly detection.

My setup is basically:

• Healthy runs are used to learn normal behaviour
• Regression runs are used to see whether the model detects the anomaly
• For each counter group I only have about 10 healthy samples
• I’m currently using leave-one-out on the healthy data to set the detection threshold
• The regression samples are not used during training or threshold selection

I’m confused about a few things:

• Do I still need a normal train/validation/test split for this type of one-class anomaly detection?
• With only 10 healthy samples, is leave-one-out better than splitting them into something like 60/20/20?
• Can the regression samples simply act as the unseen test set?
• Would it be better to collect a second independent healthy dataset and use that as a final test for false positives?
• For evaluation, should I mainly use false-positive rate and detection rate/recall rather than MSE/MAE, since I’m not predicting a continuous value?

Just trying to make sure the evaluation setup is correct before I finalise it.

I am 22. I have been using minoxidil since I was 18, and it gave me great results. However, I stopped using it because it was causing dandruff, and mentally I started feeling like I would have to rely on it for life.

After stopping, I started developing bald patches again, and they have been very difficult to recover. I am currently taking finasteride 1 mg on alternate days. My doctor initially advised me to take it for only 3 months, but I have now been on it for around 2 years.

The thing is, I still have a full head of hair, but my scalp is becoming visible, and it is really affecting me emotionally. I’m quite worried and would really appreciate advice from people who have experienced something similar.

I was considering booking another appointment with my doctor, but I honestly cannot afford it at the moment. I mainly want to understand what the best approach would be.

I am also only considering topical minoxidil because I am naturally quite a hairy person, and I’m worried that oral minoxidil could increase body hair and cause unwanted effects.

What would you suggest in my situation?

Also Fck you moderators, already losing hair, your shit games in this reddit, for a simple Title

Hi everyone, I'm about to graduate with an accredited MSc (Royal Aeronautical Society accredited) and I also have a BSc accredited by the British Computer Society. Both degrees are from Top Russell Group universities, the roles ask for accreditations, which I meet.

I'm really interested in applying for this role, and I've already spoken to a recruiter, but I'd love to hear from people who are actually doing the job or have first-hand knowledge.

A few questions:

1. What's the long-term career progression like in this role?
2. How competitive is promotion, and what does progression typically depend on?
3. How long does it usually take to reach Flight Lieutenant? I've heard that having a master's degree can lead to faster promotion, is that actually true, if so how?
4. If I'm unsuccessful, I'm also considering joining the Royal Marines as a Commando (Non-Officer). I'm physically fit and that appeals to me, but my parents think my degrees would go to waste.
5. Are there any aspects of the role that aren't obvious from the recruitment process and that you think a prospective applicant should know?
6. What's the pay like when you're deployed or serving away from home or overseas? Are there additional allowances?
7. As an officer, do you need to be the stereotypical "shouty" leader? I'm happy to lead, take responsibility, and make decisions, but I'm naturally a calm person rather than someone who shouts.
8. For the first few years of my career, as I progress through the ranks, roughly how many technicians and engineers would I be leading? How does the level of responsibility change with each promotion?
9. Is a driving licence required for this role? I don't currently have one, and I couldn't find it listed as a requirement.
10. I am also considering the Cyberspace Engineering Officer role, but I am more inclined towards the Aerosystems one as I have the relevant qualifications for both. However, I am mainly looking at factors such as pay, career progression, and where I would spend most of my time(e.g Division, Air Base, Overseas Travel).

I'd really appreciate any advice or experiences. Thanks in advance and for you time!

Hi all, hoping some serving or ex Aerosystems Engineer Officers can help me understand the commitment side before I apply.

I'm graduating with an accredited engineering MSc and looking specifically at the RAF Aerosystems Engineer Officer route. I keep seeing the 12 year initial commission figure mentioned, but I know that isn't the same as how long you actually have to stay. I'm trying to work out the real timeline so I can plan properly.

A few things I'd really appreciate clarity on from people who've been through it:

1. What is the actual return of service for an Aerosystems Engineer Officer, and does it start when you join or when you finish training?

2. How long does the Aerosystems Engineer Officer training pipeline usually take before you're fully qualified?

3. Are there any financial retention incentives for this role, and do they add extra return of service on top?

4. Realistically, from the day you join to the earliest day you could leave, how many years did it work out to for you?

Cheers for any help.

Hi all, hoping some serving or ex engineering officers can help me get my head around the commitment side before I apply.

I'm graduating with an accredited engineering MSc and looking at the engineering officer route. I keep seeing the 12 year initial commission figure, but I know that isn't the same as how long you actually have to stay. I'm trying to work out the real timeline so I can plan properly.

A few things I'd really appreciate clarity on from people who've been through it:

1. What is the actual return of service for an engineering officer, and does it start when you join or when you finish training?

2. How long does the engineering officer training pipeline usually take before you're qualified?

3. If you take the joining bonus, does that add extra return of service on top, and roughly how much?

4. Realistically, from the day you join to the earliest day you could leave, how many years did it work out to for you?

Cheers for any help.

Hi all, quick question. I'm applying for Aerosystems Engineer Officer and I've got an RAeS-accredited MSc. I've heard a few people say that if you have an accredited engineering degree you don't have to sit the CBAT, but I can't find anything confirming that on the RAF site. Is that actually true, or do you still do CBAT regardless of your degree? If you do still sit it, which tests does the engineer officer route involve? Cheers.

Hi, I’m a 22-year-old male pursuing a Master’s in Advanced computational methods for aeronautics from Imperial College.

I’m currently looking for resources and guidance to prepare for Officer selection, particularly for Cyberspace Engineering Officer or Engineering Officer (Aerosystems) roles.

I’m not very confident with interviews at the moment, and that’s something I’m actively working on, but I’m motivated and willing to improve with practice and preparation.

If anyone has experience with the selection process or can share useful resources, advice, or even coaching/tutoring (feel free to DM), I’d really appreciate it. I want to make sure I present myself in the best possible way.

Any insights from people who’ve been through this would be very helpful.

Hi everyone,

I'm a 22-year-old male and I'm really interested in joining the Royal Marines as a Commando (Rating). The issue is that I've completed a Master’s degree in Aeronautical Engineering at a top UK/global university, so my parents are strongly against this path.

Their main concern is that if I join as a Commando Rating, my education would be underutilised and I would likely earn less than in civilian aerospace engineering. They’re also worried that after several years in a front-line role, it may be difficult to transition back into the aerospace industry.

My goal is to begin recruit training within the next year. I’d like the recruitment process to move efficiently so I can start within that timeframe.

One option I’m considering is joining as an Engineering Officer first. If I do that full-time, is it possible later to serve in the Royal Marines Reserve while continuing that career?

I’ve been passionate about fighter jets, warships, and military life since childhood, and that’s the main reason I’m drawn to this path.

I’m in a genuine dilemma and I’m also considering the RAF and the Army, so I’m trying to make the best long-term decision.

Another concern I have about the Royal Marines Officer route is whether I’d naturally fit the leadership style required in that environment. I don’t think I have a particularly commanding voice or presence, especially in harsh field conditions. However, I do think I would be well suited to an Engineering Officer role.

So my questions are:

• Should I take the Engineering Officer route and later join the Royal Marines Reserve (if that’s possible)?
• Should I go for Royal Marines Commando Rating full-time and deal with the civilian transition later?
• Or would an Engineering Officer role in the RAF (Aerosystems) or Army be a better long-term fit?

I’d really appreciate insights from anyone who has experience with these paths.

Thank you in advance.

Hi everyone, I'm a 22-year-old male and I'm really interested in joining the Royal Marines as a Commando (Rating). The issue is that I've completed a Master’s degree in Aeronautical Engineering at a top 3 UK/global university, so my parents are strongly against this path.

Their main concern is that if I join as a Commando Rating, my education would be underutilised and I would likely earn less than in civilian/Officer engineering. They’re also worried that after several years in a front-line role, it may be difficult to transition back into the aerospace industry.

My goal is to begin recruit training within 1 year. I’d like the recruitment process to move efficiently/quickly so I can start within that timeframe.

One option I’m considering is joining as an Engineering Officer first. If I do that full-time, is it possible later to serve in the Royal Marines Reserve while continuing that career?

I’ve been passionate about fighter jets, warships, and military life since childhood, and that’s the main reason I’m drawn to this path.

I’m in a genuine dilemma and I’m also considering the RAF and the Army, so I’m trying to make the best long-term decision.

Another concern I have about the Royal Marines Officer route is whether I’d naturally fit the leadership style required in that environment. I don’t think I have a particularly commanding voice or presence, especially in harsh field conditions. However, I do think I would be well suited to an Engineering Officer role.

So my questions are:

• Should I take the Engineering Officer route and later join the Royal Marines Reserve (if that’s possible, can we do both)?
• Should I go for Royal Marines Commando Rating full-time and deal with the civilian transition later?
• Or would an Engineering Officer role in the RAF (Aerosystems) or Army be a better long-term fit?

I'd really appreciate hearing from anyone who's faced a similar decision or has experience with these roles.

Thank you in advance.

I’ve applied to over 1,000 roles over the past few years, and the UK graduate job market has honestly been very difficult. Recently, I completed the first-stage HireVue interview for the Graduate Engineer role in the System Performance Team at Arm, and I believe it went well.

This role genuinely means a lot to me because it aligns closely with my background in HPC, performance engineering, C++/Python, and benchmarking. I’ve spent the last two weeks preparing seriously for roles in this area, so the waiting period has been quite stressful and mentally draining.

If anyone at Arm would be open to offering advice or flagging my application internally, I’d be very grateful. Happy to share my CV or more details by DM.

Has anyone here applied for SC clearance after living in the UK for 5 years but having some periods of travel abroad?

I first arrived in the UK in October 2022 and the UK has remained my main place of residence. However, I have had a few temporary trips abroad for family visits, holidays, and internships.

Would these short-term absences affect my eligibility for SC clearance, or does the 5-year residency requirement mainly look at whether the UK was still my main base?

Hello,

I submitted an application after registering my interest, as my long-term goal is to join the Royal Marines Commando.

However, my application was rejected on the basis that I had used an invalid link, and a 12-month time bar was applied to my account. I am confused by this, as I received the application link directly to my own email after registering my interest, used the same email address to apply, and submitted the application in good faith.

I have tried to contact the recruitment team for clarification, but I have not been able to speak to someone directly about my situation. As a Commonwealth applicant, I would really appreciate clear guidance on whether the rejection and time bar can be reviewed, as I did not intentionally use an invalid or shared link.

I have also sent evidence of the application link I received to my email. I was previously advised by a support representative that I could make an application and that my eligibility, including any waiver or relevant criteria, would be considered during the process.

This has been quite disheartening, as joining the Royal Marines has been a long-standing ambition of mine. I was also previously rejected from the Parachute Regiment due to not having enough residency at the time, so I am trying to make sure I follow the correct process this time.

I would be grateful if someone could please review my case and advise me on the correct next steps.

https://preview.redd.it/sk9iubmj2b5h1.png?width=1498&format=png&auto=webp&s=43ae9f7e6b595d9dfce6db1348ea4c0d54b80a48

I'm an MSc student. I've completed 7 modules with few of the marks back, my thesis project finishes this September, and I have 2 uncapped resits scheduled for January next year (uncapped because I was unwell during the original sittings, not because I failed).

I'm applying to a research placement abroad that runs from February to April next year, right after my resits in Jan. One of their eligibility requirements is that the applicant must be "pursuing a degree."

My university told me that after my project submission in September, I won't be formally registered as a student anymore. My status changes to "Resit, not required to enrol." I would have a letter from the programme director confirming I'm returning to complete my outstanding resits in January. The degree itself won't be conferred until results are ratified around mid next year.

So my question is: during that gap period (September through July, when my degree gets awarded), am I still considered to be pursuing my degree? My instinct is yes, because the degree hasn't been awarded yet and I still have assessments to complete. But the university's wording about not being formally registered is throwing me off.

Has anyone been in this situation, especially for fellowships or research placements abroad? How did the host organisation interpret your status?

Thank you in Advance.

1. For an expensive simulator inside an MCMC DA setup like this, do you see amortised inference (SBI / neural posterior estimation) as more transformative than surrogating the forward model, since it attacks the per-pixel MCMC bottleneck directly?

2. A neural operator framing (FNO / DeepONet) mapping environmental forcings to ecosystem state feels appealing for spatial structure. But given your fluid mechanics work with discontinuities, have you found neural operators robust in systems with sharp spatial transitions (which would map to sharp biome boundaries here)?

Happy to share more context if useful. Thank you for your time.

https://preview.redd.it/44snov725e0h1.png?width=1380&format=png&auto=webp&s=23aa7dcfabb66c6de39bbba3ed24fc8076e22bce

Is my plot looking good? Advice please what can be done if I need to improve it in pyvista? or the current one is fine (color map, wake length, resolution, etc.)

I need help with Vorticity plotting I have got a presentation I am struggling, can anyone help please - DM, Happy to share .dat or the Vtu Files, no dark/black backgrounds.

Hey everyone, I'm plotting vorticity in ParaView using the "Cool to Warm" colormap (where zero is white). Right now I'm using a light grey background (see attached pic) so the white parts of the wake stand out.

Does this look professional, or is it standard practice to just use a pure white background? Also, if white is better, how exactly do I change the background to pure white in ParaView?

(Note: I need to avoid dark/black backgrounds for this project, so it has to be a light color!)

https://preview.redd.it/cde1yc6sdvzg1.png?width=1362&format=png&auto=webp&s=5a69b30bbbad289b1556dabc7fb85aef0a289261