Riddhiman Das
San Francisco Bay Area
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About
Curious thinker and gritty doer. Techno-Optimist. Aspiring Polymath.
Articles by Riddhiman
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The largest clinical dataset humanity has ever seen - now usable at the patient level!
The largest clinical dataset humanity has ever seen - now usable at the patient level!
I’m pleased to announce that TripleBlind's Privacy Suite, the product that allows access to sensitive data in a…
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34 Comments -
Stay Tuned! Leading Global Professional Services Company Invests in TripleBlindNov 6, 2020
Stay Tuned! Leading Global Professional Services Company Invests in TripleBlind
In about 10 days, we will have a significant announcement. The VC arm of a leading global professional services company…
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The Private Solution to the Schrems II Decision TurmoilAug 4, 2020
The Private Solution to the Schrems II Decision Turmoil
TripleBlind’s proprietary data privacy toolset facilitates aggregation and analysis of data, without exposing the data.…
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Let’s eat a private cakeOct 28, 2019
Let’s eat a private cake
A couple of weeks ago, I left Ant Financial/Alibaba. I am filled with gratitude to Ant Financial & Alibaba and our…
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Your utility token is worthlessNov 27, 2018
Your utility token is worthless
Despite the turbulence in the markets the past two weeks, there’s no doubt that blockchain is the most buzzworthy…
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On the Fat Protocol ThesisOct 31, 2018
On the Fat Protocol Thesis
The infrastructure is here already In 2016, Joel Monegro published the Fat Protocol thesis. The main takeaway from that…
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Hidden in Plain SightNov 12, 2015
Hidden in Plain Sight
While building the data product at mySidewalk, we’ve spent a lot of time thinking and working on how to best help make…
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Can I haz science on my big data, plz?Oct 16, 2015
Can I haz science on my big data, plz?
There’s a lot of hype about big data, cloud computing, machine learning, and data science. From my experience, things…
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Addressing the Data Governance Dilemma in the Age of Big DataSep 8, 2015
Addressing the Data Governance Dilemma in the Age of Big Data
Fun Fact: Over 90% of all the data we have in the world today was generated in the last two years. In fact, almost…
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How to Treat Data as a Business Asset in 8 StepsAug 18, 2015
How to Treat Data as a Business Asset in 8 Steps
SNAPSHOT: Treating data as a business asset and taking advantage of it to improve performance or provide better…
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Activity
13K followers
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Riddhiman Das shared thisLaurie Segall did an incredible job interviewing Sam Altman! Please give it a listen, and make sure to subscribe to her podcast.Riddhiman Das shared thisMy interview with Sam Altman is live! This was an incredibly in-depth conversation. We talk about the Pentagon deal, Sora shutting down, OpenAI's focus, solo entrepreneur billion dollar companies created with AI, scientific and medical breakthroughs, AI addiction, incentives, parenting and the role AI should and shouldn't play. Watch on YouTube or subscribe to Mostly Human wherever you get your podcasts. Excited to share this with everyone! Mostly Human https://lnkd.in/gZckqttz
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Riddhiman Das shared thisLLMs won't solve for healthcare - they're like the world's smartest medical grad who has memorized every textbook and paper, but haven't practiced medicine. World models are like the world's most experienced doctor - who've seen 50mm+ patients. Come join us this Tuesday to discuss world models in healthcare at the House of AI in SF: https://luma.com/h4x966ozBeyond ChatGPT for Health: Why Biology Needs Its Own World Model · LumaBeyond ChatGPT for Health: Why Biology Needs Its Own World Model · Luma
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Riddhiman Das shared thisWe're hosting an event for health-tech & AI hackers in SF. You've probably heard that Large Language Models won't solve for healthcare prediction - we agree because your body isn't correctly represented by English text. Yann LeCun posits that World Models are better suited for healthcare, and we agree - except it's a hard problem because all the data is private and sensitive. But what would you build if you had privacy preserving access to the world's largest healthcare dataset to build a world model? Come join us next Tuesday at our HQ at the House of AI: https://luma.com/h4x966ozBeyond ChatGPT for Health: Why Biology Needs Its Own World Model · LumaBeyond ChatGPT for Health: Why Biology Needs Its Own World Model · Luma
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Riddhiman Das reposted thisRiddhiman Das reposted thisThe last two years have made one thing clear: Foundation models change entire industries when they are native to the data modality they operate on. LLMs worked not because they were "general AI," but because they were purpose-built for text — trained to model relationships, context, and meaning across massive corpora of unstructured data. That unlocked an explosion of applications in legal, healthcare, sales, and support almost overnight. This article makes a critical and timely point: structured data is the next frontier, and treating tables as flattened text is fundamentally the wrong abstraction. Enterprises don’t suffer from a lack of data — they suffer from too much structured, messy, siloed data spread across ERPs, CRMs, warehouses, and spreadsheets. Today’s workaround is an army of brittle, task-specific models and pipelines. That doesn’t scale. What’s exciting about tabular (and more broadly, relational) foundation models is that they elevate structured data to a first-class citizen: • schemas and column semantics are modeled explicitly • relationships across tables are learned, not hand-coded • generalization happens across tasks, not just within one model From credit decisioning to healthcare risk stratification to industrial forecasting, this is where most of the world’s economic value actually lives. The $600B analytics market is just the visible tip of a much larger iceberg. The real challenge now isn’t only technical — it’s operational and organizational: embedding these models deeply into enterprise workflows, earning trust in high-stakes settings, and delivering reliability at scale. If LLMs taught us anything, it’s that when the right foundation model appears, entire ecosystems form around it. Structured data has been waiting a long time for its moment — and it feels like that moment is finally arriving. Thanks to Chance Mathisen for a great piece. https://lnkd.in/gHWD2urk
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Riddhiman Das shared thisImmigrants everywhere get the job done!Riddhiman Das shared thisI got to share my story with The Times of Israel and explain why as an investor I continue to double down on immigrant entrepreneurs (other than the fact that 80% of US unicorns have an immigrant founder or exec). But I also spent a lot of time talking about how critical your network is as a founder - especially a young, inexperienced founder (as was the case with me), or if you only recently arrived in the country. I launched my first company #AnchorFree to provide free and open internet across the world, including in countries where free speech is suppressed. But I was only 23 years of age and had 0 entrepreneurial experience, so the network we built was vital to the success of the company. The industry heavyweights who mentored us, made intros and opened new doors were game changers and helped us all the way to getting acquired. So when I became an investor at One Way Ventures I wanted to bring that “network effect” to all the immigrant entrepreneurs we backed. With our Pathfinder Collective, we’ve brought together a group of highly successful billion-dollar startup founders that share in our mission to elevate immigrant entrepreneurship. And they’re available to mentor and guide our founders because they’ve experienced many of the same challenges, they believe in community, and like to pay it forward. Sending my appreciation to our community far and wide! https://lnkd.in/guGnQpxSThe Blogs: Why this Jewish VC believes immigrant grit is a key factor for startupsThe Blogs: Why this Jewish VC believes immigrant grit is a key factor for startups
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Riddhiman Das shared thisCongrats on the launch Toby Rush, Greg Storm, Maranda Manning & Tim Massey! “TripleBlind had been asked by a Top 5 global bank to look at a particular problem statement,” Rush said of that startup’s previous work. “It used a lot of similar technology, and the outcomes went really, really well. As we looked at that experience, we said, ‘Hey, this is really a separate product and a separate company.’ So in some ways, the product has been in development with a Top 5 bank as a design partner for two years.” That global bank is working on rolling Ideem out globally and the team already has a couple of early customers in southeast Asia that are using the product, Rush said, stressing that two-factor authentication is a heightened pain point within emerging markets.”Ideem locks in $2.4M seed round for trust tech spinout driven by Toby Rush, startup veteransIdeem locks in $2.4M seed round for trust tech spinout driven by Toby Rush, startup veterans
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Riddhiman Das shared thisClearing things up - Federated Learning is distributed learning, but not private.
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Riddhiman Das shared thisGrateful for the opportunity, and the body of work that you've done over the last 30 years, Glenn Keet - we're truly standing on the shoulders of giants. Let's do this!Riddhiman Das shared this🌟 Big News in Healthcare Data Sharing! 🌟 We’re thrilled to announce Selfii’s TripleBlind Exchange – the first-of-its-kind safe marketplace for healthcare data. The TripleBlind Exchange revolutionizes how healthcare data is shared and analyzed. By leveraging our cutting-edge encryption technology, we enable organizations to collaborate on full fidelity patient data safely, securely, and ethically – all while maintaining HIPAA compliance without needing complicated de-identification. 🔒 Why is this a game-changer? • Unmatched Privacy: Data remains encrypted throughout the process. • Seamless Collaboration: Work with trusted partners without compromising data security. • Accelerated Insights: Gain critical insights faster, fueling innovation and better patient outcomes. With the TripleBlind Exchange, we’re not just protecting privacy – we’re empowering progress. Together, we can unlock the potential of healthcare data responsibly. 💡 Ready to see it in action? Let’s talk! Learn more here https://lnkd.in/g_AAQjw7
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Riddhiman Das shared thisThis is the story of how technology and data came together to save lives, and pursue the most ambitious idea in healthcare.The largest clinical dataset humanity has ever seen - now usable at the patient level!The largest clinical dataset humanity has ever seen - now usable at the patient level!Riddhiman Das
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Riddhiman Das liked thisRiddhiman Das liked thisThere are still plenty of deniers. Let’s try it with humour on a Wednesday 😀
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Riddhiman Das reacted on thisRiddhiman Das reacted on thisCongrats to my Moonshot mate Peter H. Diamandis (PHD Ventures) on the successful "We Are As Gods" book launch at Massachusetts Institute of Technology! Thanks for bringing Ray Kurzweil. I got my signed copy of his new book and a live forecast for the singularity! We also confirmed with absolute certainty that Alex Wissner-Gross is not (yet) a cyborg.
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Riddhiman Das liked thisRiddhiman Das liked thisOpen PM jobs continue to climb (off their rate-driven collapse) and are now more plentiful than they’ve been since 2022:
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Riddhiman Das reacted on thisRiddhiman Das reacted on thisLaunched in July 2025 by co-founders Gharib Gharibi and Andrew Rademacher, Archia — which just received funding from the inaugural “Digital Health KC Accelerate” initiative, plus earned Digital Sandbox funding last year and raised a pre-seed round — is focused on accelerating safe adoption of AI agents across all major AI providers via a single API, especially for the businesses in the middle market, which make up one-third of the private sector, Gharibi noted. “There are over 200,000 of them located in this area,” he explained. “Most of the companies today are not built to help them. Every day they wait without being able to adopt, it’s really harming them big time.”Archia boosts safe AI adoption for companies struggling to link the tech to solutions they really needArchia boosts safe AI adoption for companies struggling to link the tech to solutions they really need
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Riddhiman Das liked thisRiddhiman Das liked thisThrilled to share that Accenture Ventures has made a strategic investment in XBOW — an autonomous cybersecurity testing platform powered by agentic AI. Here's why this one matters: as AI accelerates the sophistication and speed of cyberattacks, most enterprises are still testing their defenses the old way — periodic, manual, point-in-time. XBOW flips that model. Their platform autonomously maps environments, probes for vulnerabilities, and simulates realistic multi-step attack paths — continuously, at machine speed. The numbers speak for themselves: roughly two-thirds of organizations expect AI to have the biggest impact on cybersecurity in the year ahead, yet fewer than 40% have processes to assess their AI tools' security before deployment. That's a massive, exploitable gap — and exactly where XBOW plays. As part of this partnership, XBOW will be integrated into Accenture's Cyber.AI solution, helping clients move from reactive, human-speed defense to continuous, AI-driven security operations. Offensive security as a continuous capability — not a compliance checkbox — is where the market is heading. Excited to back the team building that future! Thank you for your continued partnership and so energized by the impact our organizations will drive together! Oege de Moor Niroshan Rajadurai Ryan Leininger Rex Thexton Harpreet Sidhu Jonathan Floyd Alan Goff Brittany Phillips Dujon C. Smith Swen Mehta Adriane Harrington Belal Ibrahim Stuart Nicoll Jeffrey Doyle Siobhan McCleary Adam Burden Senthil (Sen) Ramani Lan Guan Aleena Varkey Jason Kemper https://lnkd.in/dkkNGbPEAccenture Invests in XBOW to Advance Continuous Offensive Security Testing and Exposure ManagementAccenture Invests in XBOW to Advance Continuous Offensive Security Testing and Exposure Management
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Riddhiman Das liked thisRiddhiman Das liked thisToday Ethos announces our $22.75M Series A led by Andreessen Horowitz, with participation from General Catalyst, XTX Ventures, Evantic Capital, and Common Magic. You are so much more than what AI can automate. Ethos is here to unlock your potential. The judgment you've built over your career. The instincts that come from having actually done something. The knowledge that lives in your head and nowhere else. Ethos uses AI to map your comparative advantage, then match you to paid opportunities across the economy: expert calls, research, AI training, fractional roles, full-time jobs. 35,000 people are joining Ethos every week. People are making $10,000 every month on Ethos. AI shouldn’t replace you. It should make you irreplaceable.
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Riddhiman Das liked thisRiddhiman Das liked thisI love this observation from Turing Award winner Richard Hamming.
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Riddhiman Das liked thisRiddhiman Das liked thisIs venture capital dead? Many argue that the concentration of capital, like we’re seeing right now, could mean the end of the industry. 5 firms committed 73% of all LP commits in Q1 this year… What does this mean for founders raising? Should you still raise venture in 2026?
Publications
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Using Transfer Learning and BPDFHE to Improve Ocular Image Recognition Accuracy
Riddhiman Das
See publicationWe used image enhancement algorithms along with transfer learning to fine-tune a deep convolutional neural network to perform ocular image recognition. To enhance the input images, we used a novel color image histogram equalization technique called Brightness Preserving Dynamic Fuzzy Histogram Equalization, which showed significant accuracy improvements: on the test data, using AlexNet, the ROC Area Under the Curve (AUC) increased to over 0.99, Equal Error Rate (EER) decreased 4-fold and…
We used image enhancement algorithms along with transfer learning to fine-tune a deep convolutional neural network to perform ocular image recognition. To enhance the input images, we used a novel color image histogram equalization technique called Brightness Preserving Dynamic Fuzzy Histogram Equalization, which showed significant accuracy improvements: on the test data, using AlexNet, the ROC Area Under the Curve (AUC) increased to over 0.99, Equal Error Rate (EER) decreased 4-fold and dropped below 4%, and decidability (a measure of class separability) increased from 1.89 to 4.17.
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Apps Gone Rogue: Maintaining Personal Privacy in an Epidemic
Ramesh Raskar, Isabel Schunemann, Rachel Barbar, Kristen Vilcans, Jim Gray, Praneeth Vepakomma, Suraj Kapa, Andrea Nuzzo, Rajiv Gupta, Alex Berke, Dazza Greenwood, Christian Keegan, Shriank Kanaparti, Robson Beaudry, David Stansbury, Beatriz Botero Arcila
See publicationContainment, the key strategy in quickly halting an epidemic, requires rapid identification and quarantine of the infected individuals, determination of whom they have had close contact with in the previous days and weeks, and decontamination of locations the infected individual has visited. Achieving containment demands accurate and timely collection of the infected individual's location and contact history. Traditionally, this process is labor intensive, susceptible to memory errors, and…
Containment, the key strategy in quickly halting an epidemic, requires rapid identification and quarantine of the infected individuals, determination of whom they have had close contact with in the previous days and weeks, and decontamination of locations the infected individual has visited. Achieving containment demands accurate and timely collection of the infected individual's location and contact history. Traditionally, this process is labor intensive, susceptible to memory errors, and fraught with privacy concerns. With the recent almost ubiquitous availability of smart phones, many people carry a tool which can be utilized to quickly identify an infected individual's contacts during an epidemic, such as the current 2019 novel Coronavirus crisis. Unfortunately, the very same first-generation contact tracing tools have been used to expand mass surveillance, limit individual freedoms and expose the most private details about individuals. We seek to outline the different technological approaches to mobile-phone based contact-tracing to date and elaborate on the opportunities and the risks that these technologies pose to individuals and societies. We describe advanced security enhancing approaches that can mitigate these risks and describe trade-offs one must make when developing and deploying any mass contact-tracing technology. With this paper, our aim is to continue to grow the conversation regarding contact-tracing for epidemic and pandemic containment and discuss opportunities to advance this space.
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Noubar Afeyan
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“Nature doesn’t try to abstract itself in a human-understandable form.” At the core of my conversation with Peter Lee was the fact that nature is staggeringly complex. It’s evolved over billions of years, meaning it has a billions-of-years head start on any human attempts to understand it. But now, AI is giving humans a tool that can process and decipher much more of nature’s complexity. And in doing so, it is totally transforming biomedical research. The coming together of human, nature, and machine intelligences will create what I call #polyintelligence. It will lead to new medicines, treatments, and technologies that promise to improve the lives of millions of people around the world. It will also challenge humans to become comfortable working alongside AI on problems and solutions that we don’t necessarily understand. Thanks to Peter and Microsoft Research for having me on to talk about how AI is changing the way we do research and about how we are building a polyintelligent future at Flagship Pioneering with ProFound Therapeutics, Quotient Therapeutics, and Lila Sciences, among others.
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Will Price
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mpathic is becoming THE partner to the AI industry as they work to safeguard users from adverse mental health and safety outcomes As millions of users — including large numbers of young people — increasingly turn to AI chatbots as their first-line “counselors” and confidants, Seattle-based startup mpathic is stepping in to ensure those digital agents don’t provide dangerous advice when it matters most.
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Michal Barodkin
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LLMs are getting commoditized. The pace of core model breakthroughs has clearly slowed. We are no longer seeing step-function jumps from “just a bigger model”. For most real systems today: • architecture matters more than the base LLM, • planning, orchestration, memory, and verification dominate quality, • the model itself is increasingly a replaceable component. In my own code factory, I can swap GPT, Claude, or Gemini with minimal impact. There are differences in latency and edge cases, but they no longer define the system. The next real breakthroughs will not come from GPT-6. They will come from new architectures built around models, not inside them. LLMs are becoming infrastructure. Systems are becoming the product.
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Lauren Bilbo
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At Logical Health, we’re combining AI with declarative, logic-based programming to deliver highly accurate results in healthcare. Super cool to see MIT exploring a similar approach: their new paper Teaching LLMs to Plan shows how step-by-step logical reasoning boosted planning accuracy from 28% to 94%. The future of AI isn’t just bigger models. It’s smarter, more reliable ones that align with real-world needs. Arxiv Link: https://lnkd.in/gnN-XYGs
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Barry O'Reilly
Artificial Organizations • 22K followers
🧠 "Zoom in. Zoom in a little more..." — Imagine performing surgery and having to talk someone through moving your images mid-procedure. Sherry Chang, CEO and co-founder of Neural Lab, shares how touchless gesture control is eliminating this chaos in the OR—enabling sterile, precise interaction in high-stakes environments. This isn’t a cool demo—it’s a life-saving transformation. Watch the full episode here: - youtube: https://lnkd.in/gbkU_XQJ - spotify: https://lnkd.in/gMZkt5ws #healthtech #visualintelligence #unlearnpodcast
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Sandeep Kunkunuru
Samyama.AI • 2K followers
"To be fair, if humanity were to use less compute, we would reduce carbon emissions. But If we are going to use more, data centers are the cleanest way to do it; and computation produces dramatically less carbon than alternatives. Google had estimated that a single web search query produces 0.2 grams of CO2 emissions. In contrast, driving from my home to the local library to look up a fact would generate about 400 grams. Google also recently estimated that the median Gemini LLM app query produces a surprisingly low 0.03 grams of CO2 emissions), and uses less energy than watching 9 seconds of television. AI is remarkably efficient per query — its aggregate impact comes from sheer volume. Major cloud companies continue to push efficiency gains, and the trajectory is promising." https://lnkd.in/g2_xvGS5
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Joshua Kelly
3K followers
In healthcare, almost all of the LLM performance evaluation research has been dedicated to studying clinical correctness. But that leaves another important domain out the picture: interoperability performance. At FHIR DevDays Flexpa launched an LLM Eval for FHIR, where we focused on key interoperability tasks like generating and transforming FHIR resources. LLMs are, perhaps surprisingly to some, extremely adept at understanding and manipulating FHIR, separate from the question of terminology accuracy. With access to the $validator operation, an agent can generate de novo FHIR resources from short natural language descriptions of healthcare events.
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Nishantha Ruwan
IWROBOTX Software Inc. • 2K followers
The authors present LERD, a novel Bayesian neural dynamical framework designed to improve diagnosis and monitoring of neurodegenerative diseases like Alzheimer’s using multichannel EEG data. Traditional machine learning approaches in this domain often treat classifiers as “black boxes” and fail to explicitly model the underlying neural dynamics generating the observed signals. In contrast, LERD infers latent neural events and their relational structure directly from EEG without requiring external event or interaction labels, combining a continuous-time event inference module with a stochastic event generation process. An electrophysiology-inspired dynamical prior guides the learning process, promoting physiologically meaningful representations. The paper also contributes a theoretical analysis that provides a tractable training bound and stability guarantees for the inferred latent relational dynamics. Extensive experiments on synthetic data and two real Alzheimer’s EEG cohorts show LERD consistently outperforms strong baseline methods, while yielding latent summaries that align with known physiological characteristics of the disease. These results suggest that modeling latent event interactions and dynamics offers a more interpretable and accurate approach for EEG-based neurodegenerative classification than traditional black-box classifiers. https://lnkd.in/g-nH6tyT
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