Vin Vashishta Profile picture
May 4 5 tweets 4 min read
Supervised deep learning is limited by label quality. An ontology must be built before labeling begins. That's a graph defining concepts and their connections. Ontologies guide labeling to ensure consistency and completeness.
1/5
#DataScience #MachineLearning #DeepLearning
Any problem space including people introduces multiple, often conflicting ontologies. Datasets ideally have multiple labels and require multiple models to be trained.
2/5
#DataScience #MachineLearning #DeepLearning
Most projects have a single, majority consensus labeling methodology. Where ontologies diverge from or conflict with it, inference will be inaccurate no matter how incredible the models we use become.
3/5
#DataScience #MachineLearning #DeepLearning
This is 1 of many issues that define an upper bound on the complexity of systems we can model reliably. Deep learning is an amazing tool but we need to spend more time teaching and researching its limitations.
4/5
#DataScience #MachineLearning #DeepLearning
We've tried overcoming the complexity bounds with larger datasets and new models. Those lines have reached their limits so it's important for us to evaluate why our approaches fail instead of finding new ones that fail less.
5/5
#DataScience #MachineLearning #DeepLearning

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More from @v_vashishta

May 6
New hiring rules. Any test given to a candidate has to be taken by the existing team, and 80% of them have to pass it.

1/11
#DataScience #MachineLearning #Hiring
If the job description asks for a minimum of 5 years of experience, it needs to include an explanation of why 4 years isn’t enough.
2/11
#DataScience #MachineLearning #Hiring
After 2 rounds of interviews, the company needs to explain what additional information they expect to get from this round and why they didn’t get it during the last round.
3/11
#DataScience #MachineLearning #Hiring
Read 11 tweets
May 5
Data Scientists looking for a new role and Recruiters looking for candidates speak 2 different languages. Miscommunication is the most common reason candidates disengage, drop out of the interview process, and reject offers. Why?
1/12
#DataScience #Recruiting #Hiring
Candidates eventually find out the role isn’t what they expected and there's not way to keep them involved in the process after that.
2/12
#DataScience #Recruiting #Hiring
Explaining a role to a Machine Learning Engineer vs. Data Engineer vs. Applied Researcher vs. Generalist Data Scientist vs. Data Analyst are all different conversations.
3/12
#DataScience #Recruiting #Hiring
Read 12 tweets
May 4
Approach your Data Science learning path strategically. Start by asking, ‘why do people build models?’ I'm going to explain a more effective approach to learning our field that focuses on applications over theory.
1/10
#DataScience #MachineLearning #CareerAdvice
Most use cases in the business world don’t use complex machine learning or deep learning. It’s mostly analytics and simple models.

Why do people build simple models? Models are mathematical tools to extract knowledge from data.
2/10
#DataScience #MachineLearning #CareerAdvice
Why do people build datasets? Datasets introduce new knowledge into the business. Having data is not enough. The dataset must contain new knowledge.
3/10
#DataScience #MachineLearning #CareerAdvice
Read 10 tweets
Apr 26
Open-sourcing Twitter’s algorithm isn’t what most people think it is. I don’t think even Elon Musk or most people at Twitter really understand where this process goes.
1/10
#DataScience #MachineLearning #Twitter
The code is not very insightful. The model itself is too complex for people to understand and interact with. So, what does open-sourcing the algorithm look like?
2/10
#DataScience #MachineLearning #Twitter
It’s the ability to click on a Tweet in your timeline and get a detailed explanation of why it was served to you. There are levels of model explainability.
3/10
#DataScience #MachineLearning #Twitter
Read 10 tweets
Apr 25
How will companies move into the Metaverse? Most platform-based businesses are already there. Google, Amazon, and Facebook are all platform native companies so they have a clear lane into the Metaverse.
1/7
#Metaverse #Strategy
Their businesses have always been digital-first and built on a platform with access to a business ecosystem or marketplace. Building an increasingly capable platform grew their accessible ecosystems.
2/7
#Metaverse #Strategy
Platforms remove barriers to scale so a company like Amazon could disrupt and rapidly take market share from retail incumbents. Google and Facebook entered emerging, very small ecosystems-Google for search and Facebook for social.
3/7
#Metaverse #Strategy
Read 7 tweets
Apr 24
Coaching and mentoring are learned capabilities. Businesses must invest in training leaders and senior technical individual contributors.

Coaching builds a farm system of talent. Here are some coaching lessons from my 15yrs in technical #leadership.
1/10
#careeradvice
1. Part of mentoring is being a career therapist. People seek out mentorship when they hit barriers they don't know how to break past. There's usually a lot of built up frustration to work through first.
2/10
#leadership #careeradvice
BUT coaching sessions must focus on improvement. I work through the emotions first but always spend the last 15-20 minutes on tangible next steps. Career therapy only works if they make progress towards long term goals.
3/10
#leadership #careeradvice
Read 10 tweets

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