Questions tagged [machine-learning]

For questions related to machine learning (ML), which is a set of methods that can automatically detect patterns in data, and then use the uncovered patterns to predict future data, or to perform other kinds of decision making under uncertainty (such as planning how to collect more data). ML is usually divided into supervised, unsupervised and reinforcement learning. Deep learning is a subfield of ML that uses deep artificial neural networks.

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68 views

Learning from events. Supervised, Unsupervised or MDP?

I have a large set of simulation logs for a market simulation of which I want to learn from. The market includes: customers products (subscriptions) The customers choose products and then stick with ...
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Commercial API Q: is there an api for converting vision tags into a caption?

There are many machine learning api for scanning images but they just return a bunch of tags. https://azure.microsoft.com/en-gb/services/cognitive-services/computer-vision/ ...
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153 views

Learning algorithm that filters keyboard clicking in audio feeds

When recording audio for screencasts or similar, very often the keyboard is clearly visible and can start to annoy listeners after a while. NN are quiet good at recognizing patterns. Image ...
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48 views

How to calculate Adaptive gradient?

In the FaceNet paper there mentions an gradient algorithm called 'AdaGrad'(Adaptive Gradient) referenced to this paper which has apparently been used to calculate the gradient of the Triplet Loss ...
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266 views

Analogies and similarity

The more I think about machine learning the more I realize the importance of finding similarities by using analogies as a way of learning. If I want to categorize words into hierarchical tree this ...
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93 views

Prove that there might be an Agent function which cannot be implemented by any Agent program

So i really don't get this question because i always thought the agent program is the same as agent's function, but i read somewhere that this is statement might be true so is this statement actually ...
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269 views

Application of Ai to task scheduling problems on heterogenous platforms

Let's say we have a cluster of 20-2000 heterogenous compute nodes. Consider for example the parallel solution of the helmholtz equation: Now we want to distribute the solution process and, to make ...
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23 views

Can number of Leads be predicted based on previous months

I have a sample set of data about Leads that gets generated every day. Leads are nothing but a user expressing request to be our partner or not. Sample data set is as shown below ...
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56 views

Decision tree doesn't quite work, is there a better alternative?

I have a problem that I have been trying to use decision trees to solve. There is a data set of pricing information for products sold by a company. The goal is to infer the pricing algorithm for each ...
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63 views

Orientation of data set before training simple ANN's

Well, I am new to implementing ANN's and there is something that i want to know. It maybe a bit silly though. I just wanted to know that if we have a simple data set say dependent only on a single ...
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56 views

Build Android News Recommendation app

Please I am interested in building a news recommendation app that will be powered by artificial intelligence. I have being making a whole lot of research on this and will be glad if somebody can tell ...
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233 views

Converting pictures into numerical values

I am working to make my first trained model for image recognition, using the programming language R. First I am attempting to make a function that takes a PNG-image as input, resizes it to 128x128 ...
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146 views

Tuning the parameters of Particle swarm optimization (PSO)

To tune the parameters of Particle swarm optimization (PSO), there are two methods offline and online. In offline manner, the meta-optimization is used to tune the parameters of PSO by using another ...
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88 views

Agent exploration which leads to a negative state where actions are limited

I'm working on a project where I train a Q-learning agent to learn an optimal control policy for a water heater. I've set up a simulation which allows the agent to explore for one year. I then examine ...
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98 views

Infer dependent variables to produce output aligned to trained data

Hypothetical example, say I wanted: P(gender,ethnicity|age,hair); so that the input would aligned to a trained dataset of: ...
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70 views

Can the addition of unnoticeable noise to images be used to create subliminals?

I was reading this report: https://www.theverge.com/2017/4/12/15271874/ai-adversarial-images-fooling-attacks-artificial-intelligence Researchers used noise to trick machine learning algorithms to ...
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8 views

Nonrealtime tracking for object detection (with or without deep features)

I've been doing a search for tracking systems based on bounding box for several days (like Sort, DeepSort, Motpy, ...). But neither is nonrealtime. My problem is based on the tracking of multiple ...
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15 views

Architecture for Logistic Regression with Arbitrary Number of Options

Suppose I want to design a neural network to choose one of several mutually exclusive options. This may normally be done via logistic regression, where the input of the network would be a [batch x ...
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12 views

Low Signal-To-Noise Ratio Data Processing and Model Choices

Attached is a plot showing that y regresses on individual features: Scatter Plot And as shown, each feature has minuscule predictive power on y. I have 130 features like this, all of them are more or ...
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1answer
53 views
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How to predict the best from a set of messages - best practice

Suppose I have a set of messages A,B,C,D and I want to produce the best message for a website user at a given time. For training I plan to show random users a random single message [A/B/C/D] and fill ...
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1answer
17 views

Is it possible to modify or replace the basic network of YOLO?

I have an idea to adapt YOLO algorithm to my application, the original YOLO algorithm is for image classifications, which have 24 convolutional layers with output class of 1000, is it possible to ...
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19 views

ML method for detecting which individuals are best predicted by the features

Broad question to help in finding an appropriate method. So I have a given feature set of (DNA/genetic) predictors and a group of individuals which are either cases or controls for diseaseX. While I ...
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7 views

How to classify “composite” gestures from “primitive” gestures (with IMU data)

I'm exploring this idea: I record IMU data for "primitive" gestures (up-down, left-right, diagonal, circle...) I train a classifier to classify them (on my dataset, RandomForest achieves &...
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12 views

Recommended vehicle trajectory prediction algorithms (based only on lat/lon data)?

Could you recommend me the most suitable algorithms for vehicle trajectory prediction? Although I'm studying kalman filter approaches and they are the most used, are there other common (NN, SVM, RF, ...
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36 views

Is training on single game each time appropriate for an agent to learn to play checkers

I was facing a problem I mentioned in a previous question but after a while, I realize that maybe the problem in the dataset not in the learning rate. I build the dataset from white positions only i.e ...
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11 views

What are the general inequalities needed for the logic gate perceptrons?

I'm trying to understand how the logic gates (e.g. AND, OR, NOT, NAND) can be built into single-layer perceptrons. I understand specific examples of weights and thresholds for the gates, but I'm stuck ...
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1answer
61 views

A way to leverage machine learning to reduce DFS/BFS search time on a tree graph?

I'm not very knowledgeable in this field but I'm wondering if any research or information already exists for the following situation: I have some data that may or may not look similar to each other. ...
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11 views

How to update the error on hidden nodes using back-propogation, given the error on the output nodes and weights

I'm trying to solve question 30 of this paper. The short version of the question is if someone could show me how to do this, I would appreciate it (the answer should be A; -0.0660). The long version ...
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15 views

Is there any solution to the problem of detecting whether a user is having trouble finding something while surfing a webpage?

While a user is navigating through a website, we need to detect whether the user is having trouble finding something in realtime. The output is used to trigger an event that should pop up a FAQ page ...
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16 views

How to build a commercial Image-Image search engine using LSH / Near Duplicate or some other algo on more than 20M images

TL;DR: HOW DO I APPLY LSH WITH A DEEP LEARNING MODEL TO BUILD A IMAGE-IMAGE SEARCH ENGINE ON >20M IMAGES? I want to build a system where I am helping my ...
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44 views

Which approach should I follow to classify tweets into topics?

I am approaching machine learning for the first time because of my studies. I have been given a bunch of tweets and the goal is to classify them per topic. The topics are not predefined, but need to ...
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15 views

How do I find text ellipses using machine learning?

I need to detect text ellipses in scanned text documents. These ellipses are defined by lines next to text. Here is a sample: (This text is a training for pupils. They have to fill in the appropriate ...
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1answer
37 views

How to do early classification of time series event with small dataset?

I would like to build a real-time binary classifier that can predict an event of interest that is occurring as soon as it starts. These are electromyographic signals, and the event classification ...
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1answer
42 views

What is “Pattern Theory”?

I came across Grenander's work "Probabilities on Algebraic Structures" recently and found that much of Grenander's work focused on what he called "Pattern Theory." He's written ...
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20 views

Network structure of generative model for classification

I'm trying to model a generative model for classification problem, especially aiming to solve an imbalanced data problem. However, I couldn't get intuitive understanding for generative classifier in ...
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1answer
50 views

Why does k-means have more bias than spectral clustering and GMM?

I ran into a 2019-Entrance Exam question as follows: The answer mentioned is (4), but some search on google showed me maybe (1) and (2) is equal to (4). Why would k-means be the algorithm with the ...
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13 views

Are there any good self annotating methods in machine learning

Currently I want to train a deep learning model on finger detection (drawing bounding boxes around fingers), so I haven't found an annotated dataset, so I decided to make it myself. but the number of ...
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20 views

How to deal with predictions for data outside the range of the training dataset in neural networks?

I’ve set up a neural network model to experiment with predicting foreign exchange rates based on various economic data. The model learned fine and the test data is OK ($R^2 = 0.88$). But I can't ...
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17 views

Estimating depth/perspective of image

I'd like to find a method in which the depth or perspective of an image is estimated. I imagine this could perhaps be done based on how quickly classified objects, such as cars or humans, grow or ...
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1answer
106 views

How to fill NaNs in Cross-Validation?

I have been searching this but did not find the answer, so sorry if this is a duplicated question. I was working with cross-validation, where some doubts came to my mind, and I am not sure about which ...
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23 views

Find the distance between two objects from a 45 degree tilted camera images taken from a drone with a specific elevation from the ground

I have a project where i'm supposed to find the distance and the height of a specific object in an image taken by a drone using one camera. I have looked into perspective transformation/correction but ...
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35 views

Which models can I use for supervised learning with images?

I have to do a project that detects fabric surface errors and I will use machine learning methods to deal with it. I have a dataset that includes around six thousand fabric surface images with the ...
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17 views

Utilizing continuous variables in concept learning algorithms

Suppose I'm using the Spambase dataset, with 57 real continuous variables and one binary label, and I'd like to implement the Find-S or LGG or similar algorithms. How do I represent the dataset for ...
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1answer
22 views

Which machine learning technique can I use to match one set of data points to another?

I have two measuring devices. Both measure the same thing. One is accurate, the other is not, but does correlate with a non-fixed offset, some outliers, and some noise. I won't always be using the ...
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25 views

Find repeating patterns in sequence data

I have database of sequential events for multiple animals. The events are represented by integers so it looks something like: ...
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15 views

How would named recognition and entity linking interface with subsequent machine learning model?

I have a database containing summary of the movie, the price of the movie, location, language. I would like to make a prediction on 'like' based on previous like of a user. I am wonder how the output ...
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38 views

Is the “mlpconv” layer in the “Network in Network” paper computing $1 \times 1$ convolutions or not?

I am reading the Network in Network paper. This is the equation they introduce for their mlpconv layer (equation 2 in the paper, page 3): $$ \begin{aligned} f_{i, j,...
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29 views

Transforming neural network target values before training

Consider the scenario in which I am measuring certain $f(a,x)$, which i want to be the target value for some related input $g(a,x)$. In other words, I am trying to map $$g(a,x)\Rightarrow f(a,x)$$ I ...
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19 views

Extracting specific information from an Invoice images

Tried to extract only specific information from the images but Couldn't, We have to automate this process using this as the format of the Images keeps on changing. LinkSample data What I have Tried: <...
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33 views

Bigger models get higher losses

I'm training a model with the transformer encoder architecture on a given fixed set of data. The task I'm solving has a trivial approximation which consists in copying part of the input to the output, ...

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