Posts by JJ Brosnan

Detect credit card fraud with Deephaven

Credit card fraud analysis using DBSCAN and Deephaven

November 17 2021 • 14 min read

Jump right into Python machine learning with Deephaven

Base+ images for AI/ML in Python make getting started quicker than ever

January 14 2022 • 2 min read

Introducing Deephaven Learn: Your new favorite tool for real-time AI in Python

Real-time data science, AI, and ML with Deephaven

January 20 2022 • 5 min read

Real-time classification with Deephaven and SciKit-Learn

Early Diabetes classification via risk factors with Deephaven

February 2 2022 • 9 min read

Real-time sentiment analysis using an LSTM network in TensorFlow

Sentiment Analysis in Deephaven with TensorFlow

February 8 2022 • 9 min read

Speed up Python code that uses NumPy

Python code that uses NumPy can be sped up further by setting array contiguity

March 2 2022 • 5 min read

From 16 to 8 - Which Python packages made it through?

The Round 3 recap of the Python Package tournament

March 28 2022 • 5 min read

The MVP trophy goes to...pandas!

Announcing the winner of the Python Package tournament

April 11 2022 • 4 min read

A new matchmaking format for solo queue players in team games

Creating even teams from a pool of solo queue players for tournament play

May 20 2022 • 7 min read

Store historical crypto data without file bloat

Make Parquet your new data storage standard

June 1 2022 • 3 min read

Calculate cumulative portfolio returns in real time

Using Deephaven for real-time and static portfolio analysis

June 15 2022 • 5 min read

Create your own historical crypto database from scratch

Leverage the CryptoWatch REST API with Deephaven and Parquet

June 23 2022 • 4 min read

Plot crypto prices in real time

Deephaven's plugin enables Matplotlib to work with real-time data

June 24 2022 • 6 min read

My favorite pandas DataFrame viewer

Eyeballs help when cleaning data

August 3 2022 • 12 min read

2 easy steps to inspect any Parquet file in seconds

Break away from CSV altogether

August 12 2022 • 2 min read

Get the most up-to-date crypto data

Using Apache Airflow to transform up-to-date crypto data

September 7 2022 • 4 min read

Crypto price predictions with TensorFlow

An AI model built for static analysis applied to real-time data

September 16 2022 • 4 min read

Nvidia RAPIDS for crypto price prediction

A GPU-centric platform for machine learning

September 23 2022 • 4 min read

Testing machine learning models on simulated real-time data feeds

Leveraging Deephaven's TableReplayer to ensure model efficacy in real time

October 4 2022 • 5 min read

Real-time crypto price predictions with Deephaven and AI

Using the Coinbase API to perform real-time price predictions

October 11 2022 • 7 min read

Publish data like you never have before

URIs make sharing easy

October 25 2022 • 5 min read

Sharing predicted crypto prices with URIs

Deephaven's URI package makes sharing tables easy

October 31 2022 • 3 min read

24 powerful Deephaven tools for data analysis

Tricks for tables every data scientist should know

November 25 2022 • 9 min read

Deephaven tables now support Python type hints

New, simpler query strings

December 14 2022 • 3 min read

Rollup tables for real-time data processing

Combining aggregations with hierarchy

February 10 2023 • 3 min read

Database connectivity comes to Deephaven

Leverage ADBC and ODBC for fast data extraction

February 17 2023 • 3 min read

Leverage GitHub's awesome REST API

Managing user-submitted GitHub issues with Deephaven

March 3 2023 • 5 min read

From database to table

Execute SQL queries in Deephaven

March 17 2023 • 3 min read

Lightning fast Python queries

Overcome Python's limitations with built-in query language methods

May 5 2023 • 8 min read

Real-time windowed and cumulative calculations made easy

Performance and efficiency with expressive syntax

June 22 2023 • 5 min read

A simple (but not obvious) way to improve query performance

Avoid unnecessary recalculations in query strings

June 30 2023 • 3 min read

Real-time semantic search

Deephaven + Weaviate

August 4 2023 • 6 min read

Deephaven and asyncio for live crypto monitoring

Create streaming tables to capture Coinbase data

September 1 2023 • 6 min read

Ultra fast joins with multi-join

Joining multitudes of tables seamlessly and quickly

September 25 2023 • 6 min read

Easily create interactive apps

Deephaven apps via bidirectional plugins

September 29 2023 • 3 min read

Technical analysis made easy

Bollinger Bands with two table operations

October 26 2023 • 6 min read

Technical analysis without external libraries

Calculating indicators and oscillators

November 22 2023 • 4 min read

Deephaven and Iceberg

Big data storage meets big data processing

September 6 2024 • 5 min read

Why partitioned tables are powerful

The benefits of partitioning data

September 27 2024 • 9 min read