In the Prophet Secretary problem, samples from a known set of probability distributions arrive one by one in a uniformly random order, and an algorithm must irrevocably pick one of the samples as soon as it arrives. The goal is to maximize the expected value of the sample picked relative to the expected maximum of the distributions. This is one of the most simple and fundamental problems in onl...

The text of a review expresses the sentiment a customer has towards a particular product. This is exploited in sentiment analysis where machine learning models are used to predict the review score from the text of the review. Furthermore, the products costumers have purchased in the past are indicative of the products they will purchase in the future. This is what recommender systems exploit by...

We characterize a monopolist’s optimal offer of service plans when only some subscribers know their demand (type) already at the contracting stage, while others may learn their demand (type) only after incurring some costs, if at all. While informed customers purchase simpler tariffs, those who are still uninformed purchase tariffs that subsequently allow them to more flexibly adjust their cons...

Driving a car is a complex skill that includes interacting with multiple systems inside the vehicle. Today’s challenge in the automotive industry is to produce innovative In-Vehicle Information Systems (IVIS) that are pleasant to use and satisfy the costumers’ needs while, simultaneously, maintaining the delicate balance of primary task vs. secondary tasks while driving. The authors report a MC...

In this paper , we consider the simplest market situation where a population of heterogeneous individuals, subject to local positive externalities, have to choose repeatedly either to buy or not a unit of a single homogeneous good, at a price determined by a monopolist. We assume that the costumers have idiosyncratic willingness to pay, and suffer positive mutual influences. In previous work [1...

Agile approaches formally appeared ten years ago and nowadays are a valid alternative for organizations developing software. Agile methodologies are especially interesting to those developing Web environments applications, as they can fit properly the special characteristics of this type of developments. In addition, maturity models like CMMI-DEV (Capability Maturity Model Integration for Devel...

A principle with quality assurance of ion chromatography (IC) is presented. Since the majority of scientists and costumers are interested in the determination of the true amount of analyte in real samples, the focus of attention should be directed towards the concept of accuracy rather than focussing on precision. By exploiting the principle of pooled calibrations and retainment of all outliers...

The main aim of Supply Chain Management (SCM) is to produce, distribute, logistics and deliver goods and equipment in right location, right time, right amount to satisfy costumers, with minimum time and cost waste. So implementing techniques that reduce project time and cost, and improve productivity and performance is very important. Emerging technologies such as the Radio Frequency Identifica...

With the spread of e-commerce platforms, it becomes extremely difficult for the costumer to choose the right product from a large number of products, and different sellers based only on his/her own experience, product picture and meta-data. Customer’s reviews present a rich source of information that have an enormous impact on the purchasing decision of the potential consumers, but reading all ...