Interview Questions

Anonymous Hornet - "To handle the non-uniform sampling, I'd first clean and divide the dataset into chunks of n second interval 'uniform' trajectory data(e.g. 5s or 10s trajectories). This gives us a cleaner trajectory data chunks, T, of format (ship_ID, x, y, z, timestamp) to be formed. For the system itself, I'd use a generative model, e.g. Variational AutoEncoder (VAE), and train the model's 'encoder' to produce a latent-space representation of input features (x,y,z,timestamp) from T, and it's 'decoder' to pred"See full answer

Anonymous Hornet - "label #shape = [batchsize, posids] X #shape = [batch_size, ch] hidden = nn.Linear(batchsize, ch) #shape = [batchsize, ch] logits = nn.Linear(ch, C) #shape = [ch, C] #modifications start here neg_ids = torch.randint(0, C, 0.1 * C) #e.g. if we want to randomly sample only 10% of C outputneg = np.dot(logits[:, negids], hidden(X)) #shape [batch_size, C1] outputpos = np.dot(logits[:, posids], hidden(X)) #shape [batch_size, C2] output = torch.concat(outputpos, outputneg) #concatenate out"See full answer

R K. - "Some clarifying questions: Is this going to be a part of exciting Meta product or completely new one? you choose Is there a particular sport or range of sports that the product should cater to? all sports, should be agnostic. What is "athletes"? pros? amateurs? fitness enthusiasts? you can decide Is there a specific problems or challenges faced by athletes does he want the product to address? feel free to make assumptions Is there a specific goal that we want to achieve"See full answer

Lalit S. - "As requirement here is to increase number of customer trading using the platform. To achieve this i will collect statistics about the list of customers registering based on the preferences. I will launch a survey which will collect their experience/preferences on various type of products available on the platform like equity, derivatives, mutual funds etc. Below are two features i will add to increase trading activity. Based on their highest order of preference, Create a feature on the produ"See full answer

Kartikeya N. - "Clarifying questions We are referring to Facebook here within Meta products, correct?: Yes Can we base the CAC as of 2025?: yes Facebook acquires users through multiple channels, are we focussed on any particular channel? : We are looking at an overall CAC for Facebook What all do we want to include in CAC? Can we limit it to the marketing and advertising costs and leave aside technical, infrastructure or people costs?: yes Here’s how I will calculate this. **Customer acquisition c"See full answer

Rev - "Clarify: Physical car garage or some app? 1 garage or a chain? Where is it located? (if highway then user seg to be focussed would change) (rn consider a residential area) Objective/ constraints? - majorly revenue i.e. #users * rev/user (acquire more users) Is there some issue and we are trying to address that via features or we just need features to improve the overall user experience? basic idea of garage: Car issue - drop it to garage/ sometimes pickup service - repair time -"See full answer

Tomer B. - "Clarify What do we mean by memorialize? Are we aiming to launch a physical or software product? What is our goal with this product? Are there specific types of pets we have in mind? Assumption Memorialize means to remind ourselves about our loved pets who passed away. We would like to launch a software product. The goal is to help users cope with the lose of their beloved pets. We also focus on house pets, keeping it for dogs and cats as the biggest market for pets. User"See full answer

Krutarth S. - "Hi, is this question part of the Powerday interview or the Mini-case interview?"See full answer

Riku H. - "Before I start, can I ask some clarifying questions? Is Facebook Reels the same as Facebook Watch where a user can go to Watch and consume short clips, react, comment and share them? In terms of measuring success, are you looking at a segment of users like the reel creators or viewers, or is that up to me? (Assume interviewer will say it's totally up to me) Can I also assume that I am looking at the product across platforms as well? Android, iOS, desktop (Assume answer is yes) Thanks fo"See full answer

L B. - "For data distribution drift: DL Divergence or PSI (Population Stability Index) performance: two categories: 1st operational metrics: runtime. 2nd model performance: loss function, MAE (regression), business metrics: overall watch time, DAU, revenue lift etc Outlier: data distribution"See full answer

Anonymous Porcupine - "Scope Clarification with Interviewer: Is it a standard civil 4-seater helicopter or a Military cargo carrier? Do we wish to calculate the balls in the passenger compartment only or do I consider the gas tank and other spaces in a helicopter? 3.Is the helicopter loaded with seats and passengers or do I assume that there are no seats and passengers/ pilot? Assumptions: The interviewer asked me to make assumptions. Its a standard 4-seater helicopter It is empty but has the standard seat"See full answer

Surbhi A. - "Authentication verifies "Who you are." Authorization determines "What you can do." Authentication establishes identity, while authorization specifies the actions or resources a user or entity is allowed to access or perform."See full answer

Balakrishnan J. - "I always strive to use feedback as a learning opportunity to enhance my skills and performance. Since I don't have recent negative feedback to share, I constantly seek constructive criticism and feedback to improve. In my experiences, I've received valuable input that has helped me refine my approach, such as enhancing communication methods or adjusting certain processes for better efficiency. Whether positive or negative, feedback is instrumental in professional growth, and I actively use it to"See full answer