Search Results for author: Mostafa Haghir Chehreghani

Found 10 papers, 3 papers with code

Heterophily-Aware Fair Recommendation using Graph Convolutional Networks

1 code implementation31 Jan 2024 Nemat Gholinejad, Mostafa Haghir Chehreghani

In this paper, we propose a fair GNN-based recommender system, called HetroFair, to improve items' side fairness.

Fairness Recommendation Systems

Strong Transitivity Relations and Graph Neural Networks

1 code implementation1 Jan 2024 Yassin Mohamadi, Mostafa Haghir Chehreghani

Local neighborhoods play a crucial role in embedding generation in graph-based learning.

 Ranked #1 on Node Classification on Citeseer (1:1 Accuracy metric)

Node Classification

Content Augmented Graph Neural Networks

2 code implementations21 Nov 2023 Fatemeh Gholamzadeh Nasrabadi, AmirHossein Kashani, Pegah Zahedi, Mostafa Haghir Chehreghani

More precisely, we propose models wherein a structural embedding using a GNN and a content embedding are computed for each node.

The Embeddings World and Artificial General Intelligence

no code implementations14 Sep 2022 Mostafa Haghir Chehreghani

From early days, a key and controversial question inside the artificial intelligence community was whether Artificial General Intelligence (AGI) is achievable.

Common Sense Reasoning

Effectively Counting s-t Simple Paths in Directed Graphs

no code implementations10 Mar 2021 Mostafa Haghir Chehreghani

An important tool in analyzing complex social and information networks is s-t simple path counting, which is known to be #P-complete.

Social and Information Networks Data Structures and Algorithms

Hierarchical Correlation Clustering and Tree Preserving Embedding

no code implementations18 Feb 2020 Morteza Haghir Chehreghani, Mostafa Haghir Chehreghani

We propose a hierarchical correlation clustering method that extends the well-known correlation clustering to produce hierarchical clusters applicable to both positive and negative pairwise dissimilarities.

Clustering Representation Learning

Sublinear Update Time Randomized Algorithms for Dynamic Graph Regression

no code implementations28 May 2019 Mostafa Haghir Chehreghani

Existing exact algorithms for updating the solution of dynamic graph regression require at least a linear time (in terms of $n$: the size of the graph).

Graph Regression regression

On the Theory of Dynamic Graph Regression Problem

no code implementations26 Mar 2019 Mostafa Haghir Chehreghani

Then, we show that given a n*m update-efficient matrix embedding (e. g., the adjacency matrix) and after an update operation in the graph, the exact optimal solution of linear regression can be updated in O(nm) time for the revised graph.

Graph Regression regression

Learning Representations from Dendrograms

no code implementations21 Dec 2018 Morteza Haghir Chehreghani, Mostafa Haghir Chehreghani

Then, to address the model selection problem, we study the aggregation of different dendrogram-based distances respectively in solution space and in representation space in the spirit of deep representations.

Clustering Model Selection +1

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