Conduct predictive modeling with the help of machine learning
Alcimed’s data science team supports you in building predictive models, by developing data mining or predictive analysis algorithms for internal or external data, with the help of models ranging from linear regression to neuronal networks.
The challenges of predictive modeling
What is predictive modeling?
Predictive models are built on the analysis of past and present data, the goal of which is to predict future events or outcomes. As such, predictive models theorize the future evolution of a variable by identifying the patterns in a large collection of historical data (often referred to as Big Data) obtained by data mining from diverse sources.
This identification is now done in an automatic manner with algorithms and theoretical statistical models, such as linear regression, decision trees, k-means clustering, neuronal networks, or other machine learning techniques.
What are the challenges related to predictive modeling?
Predictive models are tools to help make decisions regarding trends and future behaviors, to improve operational efficacy, to reduce costs, to minimize all types of risk, and more generally to stay competitive on a market.
Numerous challenges must be considered to ensure the right quality of a predictive analysis. Amongst these are choosing an adequate algorithm, defining the right parameters and calibrations, and collecting sufficiently representative training data in high quantity.
For example, to optimize your business’s sales, regression models will allow you to predict the effects of new marketing campaigns on your part of the market (based on historical observations), while classification models could help you better segment your customer base and better guide your commercial strategy. Once the choice has been made, it’s necessary to know which theoretical model is best adapted to your specific problem.
There are a multitude of algorithms in each of these two categories, and making the right choice is not always simple: choosing between a linear regression or polynomial or logistic regression, choosing between a decision tree or an SVM or a neural network, and other similar questions can complicate the decision. The technical characteristics of these techniques makes them more or less suitable, not only for your subject (types of input data, number of dimensions, expected outcomes, etc.), but also for your specific needs (for example, rapidity and power of prediction).
The capacity to interpret the results from the algorithm is an essential aspect to integrate into the specifications of most solutions in business case usages, as our object isn’t to introduce technical opacity into your processes, but rather to make them simpler and ensure that the model is used in the daily operations of your company.
Identifying the right algorithm thus requires both technical expertise and a solid knowledge and understanding of the businesses challenges.
How can we select the most suitable model for our problems and analytical needs?
Trying to maximize these indicators can lead to the inclusion of an enormous amount of variables in predictive analysis, or to use increasingly complex models. It is important to keep a portion of the dataset to test the model on, and not to train it on. Since training data are often more homogenous than real-life data, it is also important to limit the complexity of the machine learning model to the minimum required. Compiling the results from multiple different models is a technique that can limit the inherent biases of each of these models.
How can one ensure the quality of their parameters? How can a forecasting model be adapted in order to anticipate scenarios linked to events that have never happened?
This imbalance can be easy to identify if it concerns the principal object of detection, but is more difficult if it is based on one element amongst others, for example an over-representation of kittens amongst the images. Historic databases can be biased, such as clinical trial databases in which white men are over-represented with respect to the general population. During data collection, it’s important to fix and correct for these biases in our data sources by reducing the size of the over-represented sample (undersampling) or artificially increasing the size of the under-represented sample (oversampling).
How can we improve our selection of inputted data sources to avoid biasing the training of the algorithms?
Which data are sufficiently rich for their analysis to bring value? How can we draw value from our internal or external databases?
How do we support you in your predictive modeling projects
For nearly 30 years, Alcimed has supported industry leader, institutional, SME, and innovative start-up in their projects of innovation and developing new markets.
Skilled in the field and competencies of data science thanks to our dedicated team, we offer personalized support to the senior management and business unit managers (marketing, commercial affaires, operational excellence, etc.) in numerous activity sectors (healthcare, agri-food, energy and mobility, chemistry and materials, cosmetics, aerospace and defense, etc.), where we help you identify the business-specific challenges for which analytical predictions can provide a reliable and solid answer.
Our data science team supports you in each step of your project, from identifying use cases to implementing a predictive model and reflecting on its implications. This includes selection of the right model, the parameters, mining and cleaning of both internal and external data, and the presentation of results in an ergonomic manner. You can count on our expertise to bring your project to a successful conclusion with concrete outcomes!
EXAMPLES OF RECENT PREDICTIVE MODELING PROJECTS CARRIED OUT FOR OUR CLIENTS
Our purpose? Helping both private and public decision-makers explore and develop their uncharted territories: new technologies, new offers, new geographies, possible futures, and new ways to innovate.
Located across eight offices around the world (France, Europe, Singapore and the United States), our team is made up of 220 highly-qualified, multicultural and passionate explorers, with a blended science/technology and business culture.
Our dream? To build a team of 1,000 explorers, to design tomorrow's world hand in hand with our clients.
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