[Links of the Day] 01/10/2019 : Capital venture relationships and investments, Neural Network normalisation Technic, Lossless data compression using deep learning

• The Dynamics of Venture Capital Relationships : Study of VC network of relationship. The authors found that having a deeper relationship leads to fewer, not more future co-investments. Moreover, deeper relationships lead to lower exit performance, even after controlling for endogeneity. Interestingly, deeper relationships first lead to lower performance and subsequently lead to a slowdown in the relationship intensity. Relationship effects are more negative for VC firms with less central network positions, and for deals made in “hot” investment markets.
• Cerebras : a new technique for normalizing hidden activations on neural networks. This allows researchers to greatly accelerated their training sequence without the need to be a Google or AWS with dedicated accelerators. [presentation] [git]
• Bit-swap : lossless data compression technique using deep learning.

[Links of the day] 18/05/2016: Cache Compression and Phase change memory

• Statistical Compression Cache Designs : Cache memories play a critical role in bridging the latency, bandwidth, and energy gaps between cores and off-chip memory. Compressing Cache allow to save space and can offer good tradeoff in term of space / cache hit ratio.
• Yet Another Compressed Cache : INRA version of cache compression
• Phase-change memory : IBM demonstrate reliable storing of 3 bits of data per cell in PCM. However it still a long way from competing against 3DXpoint but can become a valid replacement in future storage solution

Links of the day 03 - 08 - 2015

Today's links  03/08/2015 : API cheat sheet, NVMe, Git for #Bigdata , Huffman compression explained

• Over API : cheat sheet for many programming language python , Javascript, NodeJS, ruby, Css, and many more
• NVMe Integrator's List : Full list of NVMe devices straight form UNH IOL
• DAT : US gov data collaboration tool , basically a git for data.
• Huffman - part1 [part2] - [part3] : nice series of posts on Huffman encoding

Links of the day 02 - 04 - 2015

Today's links 02/04/2015: Billing &  payment, #Bitcoin Lightning transactions, Compression benchmark, #unikernel

• Billing & Payments Engineering Meetup II : lots of very interesting talk about the difficulty of processing payements at scale while maintaining compliance and security [first meetup]
• Lightning Networks Part I - Revocable Transactions : very good break down by Rusty Russel of the Lightning Network paper. The promise of this work is exceptional: instant reliable transactions across the bitcoin network.
• Squash Benchmark : compression benchmark with 28 datasets, each of which is tested against 23 plugins containing 39 codecs at every compression level they offer—the number varies by codec, but there are 178 in total, yielding 4,984 different settings. The benchmark is currently run on 8 different machines (with more coming soon!) for a current grand total of 39,872 configurations.
• A VM for every URL: interesting experiment where the author tries to run a single unikernel per URL, not really anything significant can be derived from the experiment but it shows the direction the industry is going for. 

Links of the day 26 - 01 - 2015

Today's links 26/01/2015: #compression, text extraction, #cloud message queue comparison and #benchmarking

• ZSTD : short for Z-Standard ( and not Zombie-STD - dirty mind...), is a new lossless compression algorithm, aiming at providing both great compression ratio andspeed for your standard compression needs. It delivers decompression a rate around ~500 MB/s per core and compressiong rate of 200 MB/s ( so no real time for you).
• Ocropus : when you need to extract text from an image 
• Comparison of Message Queue Architecture on AWS : the short version is that if you are not latency sensitive and don't want to spend too much effort use SQS for job management and Kinesis for event stream processing. On the contrary if latency is critical ELB or RabbitMQs (or beanstalkds) for job management and Redis for event stream processing.
• Flotilla : Automated message queue orchestration for scaled-up benchmarking.

Compression, César 1991

Links of the day 23 - 09 - 2014

Today's links 23/09/2014: #AI , #Compression , #realtime data

• blosc : an extremely fast, multi-threaded, meta-compressor library optimized to leverage CPU cache line layout to maximize throughput. Designed to transmit data to the processor cache faster than a memcpy() OS call and Leverages SIMD (SSE2) and multi-threading capabilities present in modern multi-core processors. There is APIs for C and Python. Moreover it can use different, very fast compressors.
• The Log:What every software engineer should know about real-time data's unifying abstraction by linkedin engineering team.
Artificial Intelligence: Foundations of Computational Agents (2010) : book by David Poole and Alan Mackworth

Links of the day 28 - 07 - 2014

Today : hash , compression, economics in Memory DB and anonymity made simple

• xxHash : a fast 64 bit wide non cryptographic hash ( code ) 
• History of Lossless Data Compression Algorithms : a very nice overview of the history of loss less data compression algorithms by IEEE
• The Sacred Economy :  how the money system will have to change—and is already changing, didn't have time to read it yet, but planning too. ( or if you want the book directly )
• Aerospike : Flash optimised nosql database has been open sourced.. They have some bold claim on the performance of their product 
• Streisand : sets up a new server running L2TP/IPsec, OpenSSH, OpenVPN, Shadowsocks, Stunnel, and a Tor bridge. It also generates custom configuration instructions for all of these services. At the end of the run you are given an HTML file with instructions that can be shared with friends, family members, and fellow activists.