TechJam

Trading Strategy using Reinforcement learning 

 Dr Thomas Starke

 Friday 21st Sep '18 @ 05:00 PM - 07:00 PM

 Location: COEP's Bhau Institute Auditorium

Slides   Video     223 Participants

Over the last two decades trading has seen a remarkable evolution from open-outcry in the Wall Street pits to screen trading all the way to current automation and high-frequency trading (HFT). The success of machine learning and artificial intelligence (AI) seems like natural progression for the evolution of trading. This talk will present a glimpse of the applications of machine learning in autonomous trading systems and provide some practical examples where reinforcement learning is used for devising trading strategies.

About the Speaker:

Dr. Thomas Starke(CEO, AAA Quants) has a PhD. In physics and is tremendously interested in Mathematical modeling and machine learning in Financial markets. He has previously lectured computer simulation at Oxford University and lead strategic research projects for Rolls-Royce Plc.

Anatomy of an E-commerce search engine. 

 Mayur Datar

 Friday 8th Sep '17 @ 05:00 PM - 07:00 PM

 Location: COEP Mini Auditorium, College of Engineering Pune Shivajinagar, Pune.

Slides   Video     302 Participants

In this talk, the chief Data scientist of Flipkart will uncover the various challenges in running an e-commerce search platform like scale, recency, update rates, business shaping etc. He will also explain the overall system architecture of the search platform and get into the details of some of the sub-systems, including the query understanding and rewriting sub-system.

Slice of UX (Story behind the scene) 

 Shantanu Rao

 Wednesday 27th Jul '16 @ 06:30 PM - 07:15 PM

 Location: IDeaS.com, Banner Road, Pune

Slides   Video     37 Participants

We always like to share success stories. How a particular project was executed successfully and how the team was appreciated. There is abundance of such case studies. The case study I am presenting is more like sharing a story about a UX project that was well executed for the outside world, but what happened behind the scene to make it a success is very interesting. Its got nothing to do with any sort of technology trends or best practices on the SDLC process. It’s about how a particular situation was handled, how people were handled, how expectations were managed, how internal conflicts were mitigated, the kind of mistakes that happened, how delivery and excellence teams impact the overall project, how subjectivity plays a role in the entire engagement. How does one adapt to a totally unknown and unchartered situation?

I will also be sharing an analogy called as "The Perpetual design". It explains in a very visual & easy way “How every stake holder (project teams, business, and technology teams) can be convinced about the practicalities of a project.

Patterns of a "good" Test Automation Framework, Locators & Data! 

 Anand Bagmar

 Tuesday 21st Jun '16 @ 06:30 PM - 07:15 PM

 Location: IDeaS.com, Banner Road, Pune

Slides   Video     38 Participants

Building a Test Automation Framework is easy - there are so many resources / guides / blogs / etc. available to help you get started and help solve the issues you get along the journey.

However, building a "good" Test Automation Framework is not very easy. There are a lot of principles and practices you need to use, in the right context, with a good set of skills required to make the Test Automation Framework maintainable, scalable and reusable.

Design Patterns play a big role in helping achieve this goal of building a good and robust framework.

In this talk, we will talk about, and see examples of various types of patterns you can use for:

1. Build your Test Automation Framework
2. Test Data Management
3. Locators / IDs (for finding / interacting with elements in the browser / app)

Using these patterns you will be able to build a good framework, that will help keep your tests running fast, and reliably in your CI / CD setup!

Apache Kafka - A Practical Overview 

 Lalit Mohan Chandra Bhatt

 Thursday 11th Feb '16 @ 06:30 PM - 07:30 PM

 Location: IDeaS.com, Baner Road, Pune

Slides   Video     39 Participants

Apache Kafka is a next generation pub-sub model where the notion of distributed computing is built in. It proposes a unique way of handling message queues and is ideal for handling large volume of messages/logs as seen in internet age. Kafka has also interesting use cases in IoT where it can help ingest large amount of machine data which consumers can process.

In this session, Lalit will give you a good understanding of Kafka, its typical usecases and things to watch-out for.

DevOps is a Philosophy Not a Buzzword 

 Mohit Thatte

 Wednesday 16th Dec '15 @ 06:30 PM - 07:15 PM

 Location: IDeaS.com, Baner Road, Pune

Slides   Video     43 Participants

DevOps as a buzzword has gained a lot of traction in the past few years. It has made it past the hype phase and is strongly in the adoption phase!

But what does "DevOps" mean? Ask this to 5 people and you are likely to get 5 different answers.

In this talk, I will make the case that DevOps is a philosophy. It applies to everything from org structure to code structure to infra structure.

I will use examples from the world of sports to explain my interpretation of the DevOps philosophy.

I will also share some insights on how adopting the DevOps philosophy can help your organization operate more effectively.

Balancing Object-Functional Design in React.js Guided by Tests 

 Naresh Jain

 Thursday 8th Oct '15 @ 06:30 PM - 08:30 PM

 Location: IDeaS.com, Baner Road, Pune

Slides   Video     35 Participants

When we think of OO, most people think of modeling THE real world in software by mapping every real world object (nouns) to entities in software. These entities are then modeled using Is-A-Has-A relationship to build complex, polymorphic hierarchies with deep object graphs. State is stored and mutated in-place inside the object to achieve the desired functionality. This paradigm leads to a fairly convoluted design and encourage imperative style of programming.

Not everyone who has designed large complex systems, think of OO the same way. For instance, people who Test Drive, do not have the luxury of a big-up-front design, instead they focus on small and incremental design. IME, TDD facilities a design that is side-effect free and encourages a declarative style of programming. While decoupling and composing objects in a functional style with the right granularity of abstraction.

Let's assume we've to build a web commenting and discussion feature (like Disqus). And we've a requirement to implement this as a React component. Can we apply pure functional principles to design this? Or will the design be better if we try a classical OO JS approach? In this live demo, we'll build this component from scratch and see how TDD will help us drive an object-functional design to strike a pragmatic balance between the 2 paradigms.

Micro-service Architectures with Gilmour 

 Aditya Godbole

 Thursday 3rd Sep '15 @ 06:30 PM - 07:30 PM

 Location: IDeaS.com, Baner Road, Pune

Slides   Video     45 Participants

• Why microservices?
• Common patterns in designing microservices
• Common concerns and solutions
• Handling failures
• Composing microservices - Unix philosophy applied to microservices

Client-Side Performance Testing of a Responsive Website 

 Anand Bagmar

 Thursday 13th Aug '15 @ 06:30 PM - 08:30 PM

 Location: IDeaS.com, Baner Road, Pune

Slides   Video     40 Participants

In this workshop, we will see the different dimensions of Performance Testing and Performance Engineering, and focus on Client-side Performance Testing.

Before we get to doing some Client-side Performance Testing activities, we will first understand how to look at client-side performance, and putting that in the context of the product under test. We will see, using a case study, the impact of caching on performance, the good & the bad! We will then experiment with some tools like WebPageTest and Page Speed to understand how to measure client-side performance.

Lastly - just understanding the performance of the product is not sufficient. We will look at how to automate the testing for this activity - using WebPageTest (private instance setup), and experiment with yslow - as a low-cost, programmatic alternative to WebPageTest.

Expected Learnings

1. What is Performance Testing and Performance Engineering.
2. Hand's on experience of some open-source tools to monitor, measure and automate Client-side Performance Testing.
3. Examples / code walk-through of some ways to automate Client-side Performance Testing.

Prerequisites

1. Participants are required to bring their own laptop for this workshop.
2. Also, please install phantomJS on your machine (http://phantomjs.org/download.html)

Testing business logic using DSLs in Clojure 

 Mayank Jain

 Thursday 16th Jul '15 @ 06:30 PM - 08:30 PM

 Location: IDeaS.com, Baner Road, Pune

Slides   Video     50 Participants

Testing business logic quickly becomes tricky, as applications grow and scale. Example based unit and integration tests, and exploratory tests become poor choices to check and verify a large state space. Also such methods are not well-suited to clearly describe the state space / transitions we want to test.

Since we use Clojure to write test suites and tools at Helpshift, we tried experimenting with DSLs to express some of our testing problems. We've found that mini DSLs can indeed become useful to describe and test fairly complicated business logic.

In this talk I will cover some of the mini-DSL approaches we've tried, demonstrate one of them by example, and discuss the benefits and drawbacks based on current experience.

Android App Automation using Simple English 

 Sameer Sawant,  Shreyas Patil

 Thursday 9th Apr '15 @ 06:00 PM - 08:00 PM

 Location: IDeaS.com, Baner Road, Pune

Slides   Video     26 Participants

Yes the title is correct, you can automate android apps simply using English sentences with the help of Selenium-Cucumber and Appium. Selenium-Cucumber provide some set of predefined steps using which you can automate android app in less time and more efficiently. You need not code much, just write predefined steps and boom, your app is ready to test!!

In session we will cover:

• Why selenium-cucumber
• What is selenium-cucumber
• How to setup selenium-cucumber for mobile testing
• Demonstration

Bootiful Mongo 

 Paul Samargia,  Steve Finck

 Thursday 12th Mar '15 @ 06:00 PM - 08:00 PM

 Location: IDeaS.com, Baner Road, Pune

Slides   Video     41 Participants

Java is not dead and Mongo really is Web-Scale! Join us for a fast-paced, hands-on session where we will cover the new SpringIO Platform and specifically Spring Boot. We will also discuss Mongo DB and demonstrate its clustering, replication and partitioning capabilities.

Techniques for Effectively Slicing User Stories 

 Naresh Jain

 Thursday 27th Nov '14 @ 06:00 PM - 08:00 PM

 Location: IDeaS.com, Baner Road, Pune

Slides   Video     23 Participants

In order to achieve my goals, as a buyer of your product, I want awesome feature.

AT: make sure your users stories don't get in the way.

Users Stories, the tool teams use to break big ideas into small demonstrable deliverable, are easy to describe and challenging to write effectively. In this hands-on workshop you'll learn how to write great user stories that adhere to the INVEST principle. We'll learn various techniques to slice your stories using the vertical-slicing approach. We will discuss what elements should be included in the stories, what criteria you should keep in mind while slicing stories; why the size of your user story is important and how to make them smaller and efficient.

• Quick overview of Stories and Slicing Metaphor - 5 mins
• What do you do to Large Stories? Spike, Split, Stub & Timebox (SSST) technique. - 5mins
• Acceptance Criteria - 10 mins
• Core Slicing Techniques: - 60 mins
  1. System Slice
     1.a. Static vs. Dynamic
     1.b. Real-time vs. Batch Processing
     1.c. Build vs. Buy
     1.d. Automated vs. Manual Steps
     1.e. Defer certain roles
  2. Behavioural Slice
     2.a. Adjusting Sophistication - MVF (Minimum Viable Feature) or Walking Skeleton
     2.a.1. Acceptance Criteria
     2.b. By-pass certain steps in the workflow
     2.c. Focus on Happy Path First (edge cases later)
     2.d. No options - 1 option - Many options
  3. Incrementally improve ‘Ilities' (Usability, Scalability, Reliability, etc.)
     3.a. Simpler UI (even consider using a standard UI)
     3.b. Minmal Data
     3.c. Improve Performance Iteratively
• Product Discovery and Story Mapping - 10 mins

Global Day of Coderetreat 2014 

 Dhaval Dalal

 Saturday 15th Nov '14 @ 10:00 AM - 06:00 PM

 Location: IDeaS.com, Baner Road, Pune

Slides   Video     32 Participants

Coderetreat is a day-long, intensive practice event, focusing on the fundamentals of software development and design. By providing developers the opportunity to take part in focused practice, away from the pressures of 'getting things done', the coderetreat format has proven itself to be a highly effective means of skill improvement. Practicing the basic principles of modular and object-oriented design, developers can improve their ability to write code that minimizes the cost of change over time.

Cross-browser Cloud Testing using Omelet 

 Kapil Aggarwal

 Thursday 6th Nov '14 @ 06:00 PM - 08:00 PM

 Location: IDeaS.com, Baner Road, Pune

Slides   Video     14 Participants

• Multi Parallel testing
• Data driver testing
• Step level report generation
• BrowserStack Integration/Auto tunnel
• Auto screen Shot of failed test steps
• Command Line support for CI integration
• ExpectedConditionsExtended for PageObjects Design pattern
• Auto Re-Run failed test cases and many more...

• how to create effective tests for web apps using PageObject pattern
• how to execute these tests as part of your CI builds
• how to execute these tests in parallel on a cloud infrastructure for cross-browser compatibility testing
• how to review the testing report

Code Jugalbandi 

 Dhaval Dalal,  Ryan Lemmer

 Saturday 18th Oct '14 @ 10:30 AM - 01:00 PM

 Location: IDeaS.com, Baner Road, Pune

Slides   Video     26 Participants

In Indian classical music, we have Jugalbandi, where two lead musicians or vocalist engage in a playful competition. There is jugalbandi between Flutist and a Percussionist (say using Tabla as the instrument). Compositions rendered by flutist will be heard by the percussionist and will replay the same notes, but now on Tabla and vice-versa is also possible.

In a similar way, we will perform Code Jugalbandi to see how the solution looks using different programming languages and paradigms.

Structure of a Melody

Quick intro: the creator of the melody is called Bramha and the other(s) who listen to the melody and play accordingly is/are called Krishna.

• Say you are the Bramha of a melody, and when playing (showing - demo) your melody, you can do loud thinking and/or soliloquies as you code along.
• Once Bramha is done creating, Krishna replays the same melody differently and again thinks aloud while demoing it.
• After both Bramha and Krishna are done, they converse reflecting upon the approach, pro and cons of each. This natural conversational style, like the fire-side chats will be very reinforcing and involve the audience.
• Before the end of a jugalbandi round, participants will be asked to do a small exercise using their favourite language.
• At the end of a jugalbandi round - both bow down to the audience to indicate completion of the current round.

Workshop

During the workshop we will explore functional programming tenets through melodies. We will cover one tenet per melody by coding it in various languages like Java, Clojure, Scala, Groovy, Ruby and some JavaScript, Dr.Racket and Haskell. So get your favourite IDE set-up with the above to code-along and then do an exercise.

Time Break-up per melody

• Roughly each melody will span about 25-30 mins, during each melody we will take turns to code and explain the tenet along the way - roughly 20mins
• An exercise for the participant. For the exercise, each participant will find a new fellow jugalbandist per melody to perform a code jugalbandi between them. - 10 mins

Target Audience

Programmers intrigued by Functional Paradigm.

Our hope is that via a Code Jugalbandi session:

• People programming in different paradigms - imperative or functional, can see how each language solves the same thing differently.
• Promote learning by comparison and contrast - a natural way for human mind to grasp new things.
• It can also become a source of inspiration to try out a new languages and paradigms.
• Would give people confidence that being polyglot can be within their reach.

A Case for Graph Databases 

 Dhaval Dalal,  Gopi Kori

 Thursday 11th Sep '14 @ 06:00 PM - 08:00 PM

 Location: IDeaS.com, Baner Road, Pune

Slides   Video     15 Participants

Intro to Graph Databases and NoSQL

Gopi Kori

The session covers Introduction to Neo4j, basic operations, fundamentals of graph modeling, querying, creating and updating with the Cypher query language and a quick survey of real-world use cases.

A Case for Graph Databases

Dhaval Dalal

These days we hear a lot about NoSQL and particularly graph database. But before jumping straight into development using any graph database, we should ask the following questions - 'what makes it a case for GraphDB? And can you prove it?' Basically de-risking and making a case for management buy in. Further, its important to convince ourselves.

In this talk, I'll first highlight some cases where GraphDB will be useful. Followed by some insights from a comparison we did between Neo4j and MySQL/MSSQL. By the end of this session, you'll understand the advantages of using a GraphDB and also what questions to ask before selecting a GraphDB.

Fulfilling Promises 

 Anshul Bajpai

 Thursday 24th Jul '14 @ 06:00 PM - 08:00 PM

 Location: IDeaS.com, Baner Road, Pune

Slides   Video     13 Participants

A conventional asynchronous code with multilevel of callbacks is usually called as callback hell. And what makes it worse is, when we have to handle errors with them. We all have seen it. We all have cribbed about it.

In this talk, we will see how promises can be used to get rid of these callback hells and see how multiple promises can be chained together and how values are pushed down and errors are bubbled up in this chain.

I will also cover how we can wrap our existing asynchronous calls into promises and pass them around in our codebase seamlessly.

Microservices Architectural Pattern 

 Jesal Mistry,  Ketan Soni,  Supriya Joshi

 Thursday 10th Jul '14 @ 06:00 PM - 08:00 PM

 Location: IDeaS.com, Baner Road, Pune

Slides   Video     18 Participants

1. Understanding how 'micro' is micro
2. Ensuring that the business requirement is met within the micro service ecosystem
3. Setting up standard processes such as continuous integration, deployments, integration testing
4. Addressing devops requirements such as monitoring, alerting, production environment setup
5. How to scale the design
6. Making the services discoverable and documenting them with ease.

Inverting the Testing Pyramid 

 Naresh Jain

 Thursday 12th Jun '14 @ 06:00 PM - 08:00 PM

 Location: IDeaS.com, Baner Road, Pune

Slides   Video     48 Participants

Most software organizations today suffer from what Naresh calls, the 'Inverted Testing Pyramid' problem. They spend maximum time and effort manually checking software. Some invest in automation, but mostly building slow, complex, fragile end-to-end GUI test. Very little effort is spent on building a solid foundation of unit and acceptance tests. This over-investment in end-to-end tests is a slippery slope. Once you start down this path, you end up investing even more time and effort on testing which gives you diminishing returns.

In this session Naresh Jain will explain the key misconceptions that have led to the inverted testing pyramid approach being massively adopted, main drawbacks of this approach and how to turn your organization around to get the right testing pyramid.