Bibliographic record
Abstract
Most real-world optimization has several objectives that generally conflict with each other.Investors in the capital markets pursue several objectives to optimize stock portfolio as well.The present study aimed to optimize multi-objective portfolio using imperialist competitive algorithm in Tehran Stock Exchange.The statistical sample included the top 30 companies listed in Tehran Stock Exchange (TSE) from 2005 to 2015.For this aim, we first used an autoregressive integrated moving average (ARIMA) model to model the return series.Then, portfolio risk was firstly calculated based on generalized autoregressive conditional heteroscedasticity (GARCH) variance models in compliance with the Markowitz approach.Moreover, the results obtained from the present study showed that the imperialist competitive algorithm works well in developing stock portfolios.According to the findings, it is confirmed and recommended to apply the imperialist competitive algorithm for selecting and optimizing stock portfolios.The successful performance of this algorithm is due to the continuous superiority over the certificate market portfolio to the claim of their compatibility with the problem, which is not negligible and deniable.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.002 |
| Meta-epidemiology (narrow) | 0.002 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.002 | 0.003 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.003 | 0.002 |
| Open science | 0.001 | 0.003 |
| Research integrity | 0.003 | 0.001 |
| Insufficient payload (model declined to judge) | 0.963 | 0.965 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; the direct Gemma label and the distilled Codex classifier agree on what is shown here.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".