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.

521 questions with no upvoted or accepted answers
Filter by
Sorted by
Tagged with
1
vote
0answers
19 views

To perform a white box adversarial attack, would the use of a numerical gradient suffice?

I am trying to perform a white box attack on a model. Would it be possible to simply use the numerical gradient of the output wrt input directly rather than computing each subgradient of the network ...
1
vote
0answers
7 views

How do I format task features with a one-hot task identification vector to ensure separate weight matrices for each task in multi-task RL?

I am on Lecture 2 of Stanford CS330 Multi-Task and Meta-learning, and on slide 10, the professor describes using a one-hot input vector to represent the task, and she also explained that there would ...
1
vote
0answers
19 views

Why does the result when restoring a saved DDPG model differ significantly from the result when saving it?

I save the trained model after a certain number of episodes with the special save() function of the DDPG class (the network is saved when the reward reaches zero), but when I restore the model again ...
1
vote
0answers
11 views

Feature extraction for exponentially damped signals

I am looking into exponentially damped signals where it is a stationary signal (after implementing the Adfuller statistical test) and I would like to look into how can I extract meaningful features ...
1
vote
0answers
20 views

How I can identify holes in a 3D CAD file?

How I can identify holes in a 3D CAD file? I want to identify different types of holes, counterbored or countersunk holes. My program lets me extract, for example, the faces and adjacency of the ...
1
vote
0answers
40 views

Where can I get exercises and problems to implement machine learning models and algorithms?

I'm an intermediate machine learning student and want to get more detailed and specific practical intuition about artificial intelligence. I have made a couple of searches over the well-observed ...
1
vote
0answers
10 views

What are the current research trends in recognizing narrative similarity?

I am currently working on a term paper on the topic of Narrative Similarity, based on Loizos Michael's work "Similarity of Narratives". I am trying to find the latest trends within this field of study ...
1
vote
0answers
9 views

How do I decide which norm to use for placing a constraint on my adversarial perturbation?

I am performing an adversarial machine learning attack on a neural network for network traffic classification. For adding adversarial perturbations in features such as packet interarrival times and ...
1
vote
0answers
22 views

How do we minimize loss for a single neuron with a feedback?

Suppose we had a series of single-dimensional data points $X = \{x_1, x_2, \dots, x_n \}$, where $n$ is the number of data points and there corresponding output values $T = \{t_1, t_2, \dots, t_n \}$. ...
1
vote
0answers
35 views

Are PreLU and Leaky ReLU better than ReLU in the case of noisy labels?

Let's assume I want to build a semantic segmentation algorithm, based on Multires-UNET. My GT-masks are messy and generated by a GAN, but they are getting better and better over time. The goal is ...
1
vote
0answers
41 views

What are the pros and cons of deep learning and machine learning to develop a trading system?

As I want to start coding a new Trading AI in this year (first based on Python and later maybe in C++) I stumbled over the following question: Today, I would like to make a pro/contra list with you ...
1
vote
0answers
26 views

Human Aggression Detection Community, Competition and dataset

I'm looking for a community or competition website related to human aggression detection using Deep Learning in a video. Also, I'm looking for a dataset of human aggression activities. Any ...
1
vote
0answers
16 views

Multiple-dimension scaling (MDS) objective for MDS and PCA

The following is the MDS Objective. Let's think of a senario where I apply MDS with/from the solution I obtained from PCA. Then I calculate the objective function on the initial PCA solution and MDS ...
1
vote
0answers
31 views

Which activation functions can lead to the vanishing gradient problem?

From this video tutorial Vanishing Gradient Tutorial, the sigmoid function and the hyperbolic tangent can produce the vanishing gradient problem. What other activation functions can lead to the ...
1
vote
0answers
38 views

Neural Network Results always the same

I have a GRU model which has 12 features as inputs and I'm trying to predict output power. I really do not understand though whether I choose 1 layer or 5 layers 50 neurons or 512 neuron 10 epochs ...
1
vote
0answers
17 views

What algorithm to use for finding artists/bands in text and differentiating between artists that share the same name

Here's the data I have: Text from articles from various music blogs & music news sites (title, summary, full content, and sometimes tags). I used a couple different NLP/NER tools (nltk, ...
1
vote
1answer
40 views

Understaning Bayesian Optimisation graph

I came across the concept of Bayesian Occam Razor in the book Machine Learning: a Probabilistic Perspective. According to the book: Another way to understand the Bayesian Occam’s razor effect is ...
1
vote
0answers
41 views

Which model should I choose to maximise reward of having chosen two numbers from a list?

I am looking for a technique to train a machine learning model to choose two items from a list. So, given a list $x=[x_1, x_2, x_3, x_4, \dots, x_n]$, the model needs to choose two elements $(x_i, ...
1
vote
1answer
41 views

Pros and Cons of Seq2Seq vs Bidirectional RNN

It seems to me that Seq2Seq models and Bidirectional RNNs try to do the same thing. Is that true? Also, when would you recommend one setup over another? Thanks!
1
vote
0answers
32 views

How can I normalize gamestates in order to use with a machine learning library?

I have currently collected 150000 gamestates from playing a Monte Carlo Tree Search AI player against a basic rule based AI at the game of Castle. The information captured represents the information ...
1
vote
1answer
38 views

How is the probability transition matrix populated in the Markov process (chain) for a board game?

Following on from my other (answered) question: With regards to the Markov process (chain), if an environment is a board game and its states are the various position the game pieces may be in, how ...
1
vote
0answers
29 views

Where can I find people solving this smoothing, filtering, temporal learning problem?

Consider a prediction problem for example. This is a loss function (negative log likelihood) that I am roughly talking about: \begin{align*} J_{\text{train}} &= -\sum_t \log L\left(\theta_t, ...
1
vote
0answers
120 views

What's the difference in using multiple convolutional layers and no pooling versus using a single convolutional layer and a single max pooling layer?

I'm currently working on a college project in which I'm designing a Deep Q-Network that takes images/frames as an input. I've been searching online to see how other people have designed their ...
1
vote
1answer
33 views

How does the regression layer in the localization network of a spatial transformer work?

I am trying to understand the spatial transformer network mentioned in this paper https://papers.nips.cc/paper/5854-spatial-transformer-networks.pdf. I am clear about the last two stages of the ...
1
vote
0answers
20 views

Which generative methods are better for generating graphs, while preserving node and edge labels?

I started to dig into the topic of graph generation and I have a question - which out of generative methods (autoregressive, variational autoencoders, GANs, any other?) are better for generating ...
1
vote
0answers
33 views

Weird border artifacts when training a CNN

I've been trying to use this DeepLabv3+ implementation with my dataset (~1000 annotated images of the same box, out of the same video sequence): https://github.com/srihari-humbarwadi/...
1
vote
0answers
21 views

Steps to train and re-train a good model

I'm still a bit new to deep learning. What I'm still struggling, is what is the best practice in re-training a good model over time? I've trained a deep model for my binary classification problem (...
1
vote
0answers
20 views

What are some of the best methods in detecting facial movement using state-of-the-art machine learning models?

I am currently working on implementing a lip reading system in Python using machine learning and image processing. Currently, two initial implementations have provided promising results, albeit not ...
1
vote
0answers
19 views

Where can I find good tutorials on user tailored recommendation system for web?

I'm currently working on my uni project, but I have no idea where to start for the user tailored recommendation system on web. Where can I find a good guide on it, preferrably on languages like php ...
1
vote
0answers
23 views

Pytorch deep learning models and tabular data representation

I have quite a naive question regarding Pytorch deep learning models and tabular data representation. So, assume I have a dictionary of tables. Each table has some number of columns: categorical and ...
1
vote
0answers
27 views

Noise Cancellation on live audio stream

I want to build an application which takes a live audio from source (mic) and filtering the noise (unwanted sounds like chattering, traffic noises) and fetch into an application for further processing....
1
vote
0answers
19 views

Neural network seems to just figure out the probability of a specific result

I am really new to neural networks, so i was following along with a video series, created by '3blue1brown' on youtube. I created an implementation of the network he explained in c++. I am attempting ...
1
vote
0answers
16 views

Post-classification after inference

I designed a fire detection using Deep Learning based classification approach. In my training dataset, I have both fire and fire smokes are supposed to be detected (all under "fire"; mostly real fires ...
1
vote
0answers
36 views

Is Gradient Descent algorithm a part of Calculus of Variations?

As in https://en.wikipedia.org/wiki/Calculus_of_variations The calculus of variations is a field of mathematical analysis that uses variations, which are small changes in functions and ...
1
vote
0answers
16 views

Transpose convolution in TiF-GAN: How does “same” padding works?

This question should be quite generic but I faced the problem in the case of the TiF-GAN generator so I am going to use it as an example. (Link to paper) If you check the penultimate page in the ...
1
vote
0answers
32 views

How to exploit translational symmetry for extrapolation in video generation using machine learning

I'll try to rephrase my problem in the context of video processing. Imagine that initial frame of video has some translational symmetry. The frame evolves according to an update rule. I generate a ...
1
vote
0answers
28 views

OCR - Text recognition from Image

I plan to develop OCR application using tensorflow to get the value from the image. Text in the image may handwritting or text printed. From the image, my ocr appplication will able to get the value ...
1
vote
0answers
41 views

How is clustering used in the unsupervised training of a neural network?

How is clustering used in the unsupervised training of a neural network? Can you provide an example?
1
vote
0answers
25 views

Is there any paper that uses truncated neural networks?

Recently, I've found good success in truncated neural networks ie functions of the form $$ g=f1_{[-M,M]^d}, $$ where $f:\mathbb{R}^d\to\mathbb{R}^n$ is a feed-forward neural network and $1_{[-M,M]^d}$ ...
1
vote
0answers
18 views

Training dataset for convolutional neural network classification - will images captured on the ground be useful for training aerial imagery?

I am an agronomy graduate student looking to classify crops from weeds using convolutional neural networks (CNNs). The basic idea that I am wanting to get into involves separating crops from weeds ...
1
vote
0answers
27 views

How can I match numbers with expressions?

Let's say I have the number 123.45 and the expression one hundred twenty-three and forty-five cents. Can I develop AI to identify these two values as a match? If I can, how should I do that?
1
vote
0answers
43 views

Find the nearest object in a image which is captured from camera?

Objective : To find the nearest object (closer distance object) in the single camera image. But Image Contains multiple objects shown below: I searched in the net and found this formula to ...
1
vote
0answers
20 views

Flattened vector observation or convolutional neural network input?

This is more of a general question of how to model/preprocess 'visual' state-observations to an Agent in Reinforcement Learning that I'll illustrate with an example. Say you have a reinforcement ...
1
vote
0answers
43 views

Reinforcement learning possible with big action space?

I’m experimenting with reinforcement learning for a 2D pixel plotting task, and am running into an issue that (I think) has to do with the big action space. It goes like this: The Agent gets two ...
1
vote
0answers
22 views

How are data assimilation and machine learning different?

This might seem like a really silly question, however I have not been able to find any answers to it on the internet. From my rough understanding of data assimilation, it combines data with ...
1
vote
0answers
32 views

Relationship between model complexity (depth) and dataset size

I'm new to deep learning. I was wondering what's the relationship between a deep model complexity (e.g. total number of parameters, or depth) and the dataset size? Assuming I want to do a binary ...
1
vote
0answers
46 views

How can I recognise the name of a molecule given an image of its structure?

I want to recognize the name of the chemical structure from the image of the chemical structure. For example, in the image below, it is a benzene structure, and I want to recognize that it is benzene ...
1
vote
1answer
28 views

Is CNN capable of extracting the descriptive statistics features

I was trying to build a CNN model. I used time series data of daily temperature to predict if there is risk of an event, say bacteria growth. I calculated the descriptive statistics of the time series,...
1
vote
0answers
15 views

Need to analyze input CSV files and determine whether input file is good or bad w.r.t it's data

We have a scenario where we need to implement an Artificial Intelligence solution which will evaluate the input data file of my Azure Data Factory pipeline and let us know whether the file is good or ...
1
vote
0answers
57 views

Finding the right model

Let us say that i have two ball throwing machines which has some algorithm running in the back-end for releasing the balls. One machine shows it throws 5 balls in 1 sec. Other shows the exact ...

1
4 5
6
7 8
11