Jimmy Xu

Arvind Narayanan's new book opening. The analogy of "Vehicle" to "Artificial Intelligence" (#AI) truly captures what we are going through right now.

#caret really makes beginner's life way much easier. You can run a random forest model with only one line of syntax.
library(caret)
model <- train(Species ~ ., data = iris, method = "rf")

PyCaret 3.0 | Docs An open-source, low-code machine learning library in Python

#PyCrat is very close to the #caret package in R. There is a very good documentation of the #PyCrat package for free at pycaret.gitbook.io/docs. #PyCrat is designed to simplify and automate workflows for building, training, and deploying machine learning models.

#AI can be our best companion—if we know the fundamentals—allowing us to stand on the shoulders of #AI and the vast knowledge base built by previous programmers on #GitHub, #StackOverflow, and #StackExchange. #Copilot #GoogleColab

I was analyzing the 50-day vs. 200-day moving average using #Python when I encountered some errors. I turned to #AI for quick solutions. I could not be more excited about all what is available at my fingertips in mini-seconds. #Copilot #GoogleColab

#SEO - "Outside the industry, nobody knows what we do” - Schultheiß & Lewandowski (2021).

Can @bsky.app verify this? I kept hearing we're entering the 💰 #GoldenAgeofAmerica - am I on an #AlternateReality?

I’m just a humble two-legged mammal trying🥵 to feed a family — with #ZeroInterestInPolitics, no red or blue wines. Just wondering: is there a magic way for surviving this💰 #GoldenAge?

Can @bsky.app or anyone credible check the story being pushed for publication? Does this happen randomly or regularly?

I’m a #DataNerd who started worrying about food🍕 supplies for my kids this fall. Will my kids have anything to eat when these farmers take an unpaid vacation🏖️? #GoldenAgeofAmerica💰

I was told we’re entering the💰 #GoldenAgeofAmerica -so I assume imported groceries (funded by #tariffs magically paid by foreigners, of course) will be falling from the sky any minute now?
Should I even bother #shopping? Or just wait outside with a basket and hope for a #sandwich🥪 and #pizza🍕 storm?

I was told we’re entering the💰 #GoldenAgeofAmerica -so I assume imported groceries (funded by #tariffs magically paid by foreigners, of course) will be falling from the sky any minute now?
Should I even bother #shopping? Or just wait outside with a basket and hope for a #sandwich🥪 and #pizza🍕 storm?

Can @bsky.app verify the story? I kept hearing we're entering the 💰 #GoldenAgeofAmerica - am I on an #AlternateReality?

I’m just a humble two-legged mammal trying to feed a family — with #ZeroInterestInPolitics, no red or blue wines. Just wondering: is there a way for surviving this💰 #GoldenAge?

Can @bsky.app or anyone credible check the story being pushed for publication? Is this happening randomly or regularly?

I’m a #DataNerd who started worrying about food supplies for my family this fall. Will my kids have anything to eat when these farmers take an unpaid vacation? #GoldenAgeofAmerica

Your struggle isn’t weakness. It’s proof you’re still in the fight. Don’t give up. The climb is brutal, but the view is worth it. #PositiveEnergy

Really enjoy reading these well-made trade-off charts!

This is awesome! More insights📊 = More wisdom🧠. #FiveThirtyEight was probably a pioneer in this field. There is a dedicated R package for much of the #DataViz work they used in their stories:
cran.r-project.org/web/packages...

$SPY MACD hitting elevated zones reminds me of previous cycles 📊 When we see hits around 1.5 like July 3rd, it's worth noting the historical context - similar extreme readings often preceded significant corrections. Not a sell signal, but worth watching for divergence! #SPY #MACD #TechnicalAnalysis

Now a similar upward momentum to Mar 2025 is emerging, though that surge in March was followed by a sharp drop in April. #MACD is typically mean-reverting—extreme values may signal reversals. How do you think this July trend will play out? Note: No Investment Advice #SPY #DataViz #Trading #RStats

📈 Just built an MACD chart for $SPY using #RStudio & #plotly. The divergence patterns and signal crossovers from Mar-May 2025 tell quite a story! Love how the histogram captures momentum shifts. Note: No Investment Advice #DataViz #Trading #RStats #plotly

📊Just plotted $SPY data with moving averages. The blue line (50-day) crossed above the red line - LONG bullish signal! From ~$380 to $620 since 2023. The chart doesn't predict the future though. What do you think will happen next?🐃or 🐻
Note: No Investment Advice
#SPY #GoldenCross #Trading #RStats

This is cool, @libbyheeren.bsky.social . Can't wait to try it out!

Console New Line starts with + instead of > how do you change that That usually means that it's waiting for you to finish the line of code, e.g. with a closing parenthesis or brace. To give up on a line, try Ctrl-C.

Sometimes, when a closing parenthesis or brace is missing in #Rstats code, a plus sign may appear in the R console. To convert this plus sign back to the > prompt, simply press Ctrl C. Reference: forum.posit.co/t/console-ne...

loreabad6 - Overview Researcher - MSc. Geospatial Technologies - Environmental Engineer / Remote Sensing for the Environment - Spatial Analyses - R Programming - Statistics - loreabad6

What a talented, young scientist!!! Just found her #GitHub site: github.com/loreabad6. She will be remembered!

This past week has been a strong one📊 for all except #GOOG:
#SOFI leads with a mammoth 22% weekly surge, capped by today's 6% jump.
#HOOD soared 20%, continuing its rally with today’s 13% spike.
#NVDA and #AMZN had weekly gains of above 5%.
📊🧠Note: For learning purposes only. Not investment advice.

📈Wrapping up today's stock analysis:
🟢 SoFi (#SOFI) and Robinhood (#HOOD)leading with highest sentiment despite moderate mention volumes - strong bullish signals
🔴 Big Techs: #AMZN & #GOOG showing weaker sentiment despite high mention volumes
#MarketSentiment #Trading

I just ran a word frequency analysis on some Reddit posts scraped from #WallStreetBets using #Rstats. It looks like discussions about calls vs. puts have been hot. Any other types of analyses do you think might be useful? #TradingTips #Trading #OptionsTrading

- #AI is the new electricity -- by Andrew Ng
- LLM is the new OS
- Prompt/Chat is the new intelligent terminal
- Cursor is the new app
- Decade of agents, not year of agents
- Code was easy part, web stack (auth, payments, domain) & deployment was the hard part

YouTube video by Y Combinator Andrej Karpathy: Software Is Changing (Again)

@karpathy.bsky.social's keynote at #AI Startup School in San Francisco that received 29k likes within three days.
youtube.com/watch?v=LCEm...
- Software 1.0 = computer code programs computer
- Software 2.0 = weights programs neural net
- Software 3.0 = prompts programs LLM
#ai #LLM #agent

Wonder where the AI learned that from and how, eh?
2026 - My #LLM is replacing me! #AI #CoPilot

🧠What #AI tools do you use regularly? Some of my favorite ones are:
✅ Claude & Cursor (AI-paired programming—my coding speed is up significantly)
✅ OpenAI (Idea Generation)
It’s beyond tooling—it's about real value through deep skills:
🧠System thinking
🛠️ Automation

An AI agent is like a smart thermostat: it senses the room temp, decides if it's too hot or cold, and acts by adjusting the heat. 🔁
In business, AI agents do the same—monitor data, make decisions, and take action.
#AIAgent is coming. Are you ready?🧠📊
#AI #BusinessTech #LLM