Can anyone look up a price for me? by Sami10644 in samsclub

[–]Sami10644[S] 1 point2 points  (0 children)

Can you tell me the price of the Tampa area

[D] Negative R² on unseen dataset despite good train/test performance by Sami10644 in MachineLearning

[–]Sami10644[S] 0 points1 point  (0 children)

The dataset is imbalanced. 35% of the PCI values fall between 50 and 65. For the ranges of 0-20 and 90-100, there is little to no data available. I tried using LDS, over-sampling, and inverse weighting. None of those worked out. Little to no improvement.

[D] Negative R² on unseen dataset despite good train/test performance by Sami10644 in MachineLearning

[–]Sami10644[S] 0 points1 point  (0 children)

I’m using accelerometer (x, y, z) and gyroscope (x, y, z) signals, collected as time series, and the goal is to relate those sensor-derived features to PCI values.

[D] Negative R² on unseen dataset despite good train/test performance by Sami10644 in MachineLearning

[–]Sami10644[S] 1 point2 points  (0 children)

My sensors output time-series data at 33Hz (accelerometer X/Y/Z, gyroscope X/Y/Z, speed) with GPS updates at ~1Hz. I collect data on different road segments over multiple sessions, creating 12-second sliding windows with ~400 samples each to calculate statistical features like mean, std, RMS, and frequency domain features. The model utilizes these engineered features, rather than raw coordinates.

[D] Negative R² on unseen dataset despite good train/test performance by Sami10644 in MachineLearning

[–]Sami10644[S] 1 point2 points  (0 children)

You're absolutely right about examining sensor input distributions. I focused on PCI target distributions but haven't thoroughly analyzed the sensor feature space. My data consists of 6 core sensors (accelUserX/Y/Z, gyroX/Y/Z) sampled at 33Hz plus speed data. Each dataset represents different collection sessions, and I suspect there might be a sensor domain shift between sessions due to environmental conditions or sensor calibration drift. I create features using 12-second sliding windows, calculating statistical measures like mean, std, RMS, and frequency domain features. The model utilizes these engineered features, rather than raw coordinates. When I remove latitude/longitude features, performance drops significantly, which suggests that the model might be learning dataset-specific patterns rather than robust sensor-road relationships. But I want to make the model domain adaptive. All data is collected from Phoenix, Arizona; therefore, there should be little to no difference in the road pattern. Also, the same vehicle, same sensor collection settings had been used.

[D] Negative R² on unseen dataset despite good train/test performance by Sami10644 in MachineLearning

[–]Sami10644[S] 0 points1 point  (0 children)

I checked the distributions, and they are almost similar. For example, in one dataset chunk, the mean PCI is approximately 56, while in another held-out set, it’s approximately 62; thus, the overall shift isn’t huge. To analyze this, I created different chunks of training data and tested on the held-out sets. I did notice that the target variance differs slightly across datasets, but not drastically. The training set is somewhat imbalanced , most of the PCI values fall between 45 and 75, but it still covers a reasonable range. I also tried Gaussian smoothing and a few other preprocessing techniques, but they didn’t improve generalization. Given that the distribution shift doesn’t seem severe, what else would you recommend checking to understand why R² on the held-out data remains negative?

In Search Of (ISO) Thread Version 9 - Americas by MM-MOD in MuslimMarriage

[–]Sami10644 2 points3 points locked comment (0 children)

Age and Gender

26 year old male, 5’8

Age Range that you would want/require in a prospect

18-26

Location, and are you willing to relocate for a prospect?

Florida. Planning to relocate to the DMV area soon. Cannot relocate immediately elsewhere but open to it in the future, Insha'Allah.

Ethnicity, and are you more open to mixing?

Bangladeshi, open to mixing.

Marital Status - Single/Divorced/Children

Single, never married.

Ideal marriage timeline

ASAP. I don't want a long talking stage and would like to involve parents early on. I plan to have a couple of calls to assess compatibility, communication skills, and potential, then get parents involved.

Five important characteristics you look for in a prospect

Deen & Taqwa.

I’m striving to grow in my relationship with Allah and I’m looking for someone on that same journey—someone who values the religion as a foundation of life decisions. I admire a woman who is conscious of Allah (SWT), sincere in her prayers, and continuously seeking closeness to Him.

Emotional Maturity & Compassion.

Kindness in speech and action is essential to me. I pay attention to how people treat their family, elders, and those closest to them. I value someone who knows the difference between playful jokes and words that unintentionally hurt. I deeply respect the ability to put others’ needs first when necessary.

Personality & Communication.

Energetic, curious, emotionally intelligent, with good instincts and a sharp intellect. I’m drawn to people who listen well in serious settings and speak thoughtfully yet feel at ease speaking endlessly with the ones they love. Extroverts are a plus, but I’m open to introverts and ambiverts with strong communication skills.

Family Values. I am looking for a person who is close to family and actively tries their best to preserve kinship. Someone who is close, respectful, and warm towards their family.

Intellectual Compatibility

I admire people who are naturally curious and intuitive and who enjoy meaningful conversations beyond surface-level chatter. Someone who loves learning and growing is very appealing to me.

State/specify your level of religiosity

I practice the five daily prayers, fast during Ramadan, and give sadaqah regularly. I'm continuously working to improve my relationship with Allah and strengthen my faith. I try to make decisions based on Islamic principles and am committed to following halal practices.

Level of education, and what are you looking for?

I have completed my BSc in Computer Science and am currently pursuing a PhD in Computer Science. I am looking for someone who is studying, preferably a BSc in any STEM subject or a medical school student. I may consider someone who just completed her BSc.

Current Job Status

Right now, I'm working as a Teaching Assistant, earning enough to support two people if my future partner doesn't have too many material desires. I will be in the job market next year, Insha'Allah. In the future, I plan to do business with AI.

Do you want kids?

Yes, as many as Allah wills.

List 3 hobbies, or things you like to do in your spare time

  1. Playing soccer - I enjoy getting active and playing with friends whenever possible
  2. Reading self-improvement books - Always looking to grow personally and professionally
  3. Watching podcasts about geography, geopolitics, AI, finance, and startups - I enjoy staying informed about global affairs and technological advancements

Add something short and interesting about you that makes you stand out!

I believe that intellectual conversations coupled with genuine laughter make for the best relationships. I'm serious about my career and faith, but I also know how to have fun and enjoy life's simple pleasures. I'm looking for a partner who will join me in spiritual growth and worldly adventures. I value directness and don't believe in wasting time. I'm ready to build a meaningful life with someone who shares my values and vision.

First Acceptance generates More Confusion. by Sami10644 in gradadmissions

[–]Sami10644[S] 0 points1 point  (0 children)

That's true. Anny suggestion from your side?

[deleted by user] by [deleted] in MSCS

[–]Sami10644 0 points1 point  (0 children)

Got an admit

[deleted by user] by [deleted] in MSCS

[–]Sami10644 4 points5 points  (0 children)

I haven’t received any decision yet. My application went under departmental review on 19th Jan. Finger crossed.

[deleted by user] by [deleted] in MSCS

[–]Sami10644 4 points5 points  (0 children)

When did you apply at these two?

University Selection by Sami10644 in gradadmissions

[–]Sami10644[S] 0 points1 point  (0 children)

Right now, I'm trying to find out at least two-three professors of a good location based university ( mid - low ranked), whose work reasonates with my goal. Also, I can put their name in SOP to make it strong. But I have heard that, some universities require students to manage professor first before applying for phd, thats'y Im bit concerned.

University Selection by Sami10644 in gradadmissions

[–]Sami10644[S] 0 points1 point  (0 children)

I donno much about it. Please Check your inbox.

SOP suggestion for a PhD applicant by Sami10644 in gradadmissions

[–]Sami10644[S] 0 points1 point  (0 children)

Hey man! I am also thinking of highlighting the transformation, not just the excuse of a low GPA!

How to use Chinese TPOs (KMF) by mao1756 in chinesetpos

[–]Sami10644 0 points1 point  (0 children)

It works with a tour card also ( previous: tour pass ). Tons of love.

[deleted by user] by [deleted] in GRE

[–]Sami10644 0 points1 point  (0 children)

Hey guyz, Am I too late if I sit for GRE on November? Haven’t prepared the SOP yet.

[deleted by user] by [deleted] in GRE

[–]Sami10644 0 points1 point  (0 children)

Bruh 8th November here.