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Book ; Online: Real-Time Anomaly Detection in Data Centers for Log-based Predictive Maintenance using an Evolving Fuzzy-Rule-Based Approach

Decker, Leticia / Leite, Daniel / Giommi, Luca / Bonacorsi, Daniele

2020

Abstract: Detection of anomalous behaviors in data centers is crucial to predictive maintenance and data safety. With data centers, we mean any computer network that allows users to transmit and exchange data and information. In particular, we focus on the Tier-1 ... ...

Abstract	Detection of anomalous behaviors in data centers is crucial to predictive maintenance and data safety. With data centers, we mean any computer network that allows users to transmit and exchange data and information. In particular, we focus on the Tier-1 data center of the Italian Institute for Nuclear Physics (INFN), which supports the high-energy physics experiments at the Large Hadron Collider (LHC) in Geneva. The center provides resources and services needed for data processing, storage, analysis, and distribution. Log records in the data center is a stochastic and non-stationary phenomenon in nature. We propose a real-time approach to monitor and classify log records based on sliding time windows, and a time-varying evolving fuzzy-rule-based classification model. The most frequent log pattern according to a control chart is taken as the normal system status. We extract attributes from time windows to gradually develop and update an evolving Gaussian Fuzzy Classifier (eGFC) on the fly. The real-time anomaly monitoring system has to provide encouraging results in terms of accuracy, compactness, and real-time operation. Comment: 9 pages, 6 figures, 1 table, IEEE World Congress on Computational Intelligence (WCCI 2020). arXiv admin note: substantial text overlap with arXiv:2004.09986
Keywords	Computer Science - Artificial Intelligence ; Computer Science - Databases ; Computer Science - Machine Learning
Subject code	006
Publishing date	2020-04-25
Publishing country	us
Document type	Book ; Online
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Article ; Online: Preparing Distributed Computing Operations for the HL-LHC Era With Operational Intelligence.

Di Girolamo, Alessandro / Legger, Federica / Paparrigopoulos, Panos / Schovancová, Jaroslava / Beermann, Thomas / Boehler, Michael / Bonacorsi, Daniele / Clissa, Luca / Decker de Sousa, Leticia / Diotalevi, Tommaso / Giommi, Luca / Grigorieva, Maria / Giordano, Domenico / Hohn, David / Javůrek, Tomáš / Jezequel, Stephane / Kuznetsov, Valentin / Lassnig, Mario / Mageirakos, Vasilis /

Olocco, Micol / Padolski, Siarhei / Paltenghi, Matteo / Rinaldi, Lorenzo / Sharma, Mayank / Tisbeni, Simone Rossi / Tuckus, Nikodemas

Frontiers in big data

2022 Volume 4, Page(s) 753409

Abstract: As a joint effort from various communities involved in the Worldwide LHC Computing Grid, the Operational Intelligence project aims at increasing the level of automation in computing operations and reducing human interventions. The distributed computing ... ...

Abstract	As a joint effort from various communities involved in the Worldwide LHC Computing Grid, the Operational Intelligence project aims at increasing the level of automation in computing operations and reducing human interventions. The distributed computing systems currently deployed by the LHC experiments have proven to be mature and capable of meeting the experimental goals, by allowing timely delivery of scientific results. However, a substantial number of interventions from software developers, shifters, and operational teams is needed to efficiently manage such heterogenous infrastructures. Under the scope of the Operational Intelligence project, experts from several areas have gathered to propose and work on "smart" solutions. Machine learning, data mining, log analysis, and anomaly detection are only some of the tools we have evaluated for our use cases. In this community study contribution, we report on the development of a suite of operational intelligence services to cover various use cases: workload management, data management, and site operations.
Language	English
Publishing date	2022-01-07
Publishing country	Switzerland
Document type	Journal Article
ISSN	2624-909X
ISSN (online)	2624-909X
DOI	10.3389/fdata.2021.753409
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Book ; Online: Predicting dataset popularity for the CMS experiment

Kuznetsov, Valentin / Li, Ting / Giommi, Luca / Bonacorsi, Daniele / Wildish, Tony

2016

Abstract: The CMS experiment at the LHC accelerator at CERN relies on its computing infrastructure to stay at the frontier of High Energy Physics, searching for new phenomena and making discoveries. Even though computing plays a significant role in physics ... ...

Abstract	The CMS experiment at the LHC accelerator at CERN relies on its computing infrastructure to stay at the frontier of High Energy Physics, searching for new phenomena and making discoveries. Even though computing plays a significant role in physics analysis we rarely use its data to predict the system behavior itself. A basic information about computing resources, user activities and site utilization can be really useful for improving the throughput of the system and its management. In this paper, we discuss a first CMS analysis of dataset popularity based on CMS meta-data which can be used as a model for dynamic data placement and provide the foundation of data-driven approach for the CMS computing infrastructure. Comment: Submitted to proceedings of 17th International workshop on Advanced Computing and Analysis Techniques in physics research (ACAT)
Keywords	Physics - Data Analysis ; Statistics and Probability ; High Energy Physics - Experiment
Subject code	306
Publishing date	2016-02-23
Publishing country	us
Document type	Book ; Online
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Article: Emodinamica dello scompenso del cuore destro nelle cardiopatie mitraliche.

Giommi, L

Giornale italiano di cardiologia

1974 Volume 4, Issue 1, Page(s) 45–55

Title translation	Haemohinamics of the right heart failure in mitral diseases (author's transl).
MeSH term(s)	Adult ; Blood Pressure ; Female ; Heart Failure/etiology ; Heart Failure/physiopathology ; Hemodynamics ; Humans ; Hypertension, Pulmonary/etiology ; Male ; Mitral Valve Insufficiency/complications ; Mitral Valve Stenosis/complications ; Pulmonary Circulation
Language	Italian
Publishing date	1974
Publishing country	Italy
Document type	Journal Article
ZDB-ID	184670-x
ISSN	0046-5968
ISSN	0046-5968
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Article: Miocardiopatia ipertrofico-apicale non ostruttiva. Descrizione di un caso.

Giommi, L / Cavarzerani, A / Olivari, Z / Bolomini, L

Giornale italiano di cardiologia

1983 Volume 13, Issue 3, Page(s) 187–191

Abstract: A 53-year old patient with recurrent atrial fibrillation and atypical angina was found to have hypertrophic non-obstructive apical cardiomyopathy. His electrocardiogram recorded left ventricular hypertrophy and giant inverted T waves. Cross-sectional ... ...

Title translation	Hypertrophic non-obstructive apical cardiomyopathy. A case report.
Abstract	A 53-year old patient with recurrent atrial fibrillation and atypical angina was found to have hypertrophic non-obstructive apical cardiomyopathy. His electrocardiogram recorded left ventricular hypertrophy and giant inverted T waves. Cross-sectional echocardiography revealed a typical ace-of-spade configuration of the left ventricular apex. This feature was confirmed at cardiac catheterization, which failed, however, to detect any intraventricular pressure gradient even after isoproterenol infusion. The apex of the right ventricle was also obliterated by hypertrophied muscle. Thus this case had all the typical findings of hypertrophic non-obstructive apical cardiomyopathy, which were best displayed by electrocardiography, bidimensional echocardiography and left ventriculography.
MeSH term(s)	Angiocardiography ; Cardiomyopathies/diagnosis ; Echocardiography ; Electrocardiography ; Humans ; Male ; Middle Aged
Language	Italian
Publishing date	1983
Publishing country	Italy
Document type	Case Reports ; English Abstract ; Journal Article
ZDB-ID	184670-x
ISSN	0046-5968
ISSN	0046-5968
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Article: Clinical and angiographic follow-up after coronary angioplasty in patients with two-vessel disease: influence of completeness and adequacy of revascularization on long-term outcome.

Cavallini, C / Risica, G / Olivari, Z / Marton, F / Franceschini, E / Giommi, L

American heart journal

1994 Volume 127, Issue 6, Page(s) 1504–1509

Abstract: To assess the influence of the degree of revascularization on long-term results with angioplasty in multivessel disease, 151 consecutive patients with double-vessel disease and successful angioplasty in at least one vessel were prospectively followed up ... ...

Abstract	To assess the influence of the degree of revascularization on long-term results with angioplasty in multivessel disease, 151 consecutive patients with double-vessel disease and successful angioplasty in at least one vessel were prospectively followed up for a mean of 14 months (range 6 to 30 months) with clinical evaluation, an exercise stress test, and routine angiography. Patients were divided into three groups according to completeness and adequacy of revascularization: group 1--complete revascularization (no residual stenosis > or = 70%, 51 patients); group 2--incomplete but functionally adequate revascularization (residual stenosis > or = 70% in a vessel < 2 mm in diameter or supplying akinetic or dyskinetic segments of the left ventricle, 56 patients); group 3--incomplete and inadequate revascularization (residual stenosis > or = 70% in a vessel > or = 2 mm in diameter supplying normal or hypokinetic segments, 45 patients). There were no late deaths; one myocardial infarction occurred in group 1 patients, three in group 2, and two in group 3 patients (p = NS). Recurrence of angina was lower in group 1 (13 of 51 or 26%) and group 2 (16 of 56 or 28%) compared with group 3 (23 of 45 or 51%, p < 0.01). A positive stress test for ischemia was present in 20 patients (39%) of group 1, in 30 (54%) of group 2, and in 26 patients (58%) of group 3.(ABSTRACT TRUNCATED AT 250 WORDS)
MeSH term(s)	Aged ; Angioplasty, Balloon, Coronary/methods ; Angioplasty, Balloon, Coronary/statistics & numerical data ; Chi-Square Distribution ; Coronary Angiography ; Coronary Disease/diagnostic imaging ; Coronary Disease/mortality ; Coronary Disease/therapy ; Female ; Follow-Up Studies ; Humans ; Italy/epidemiology ; Male ; Middle Aged ; Prognosis ; Prospective Studies ; Recurrence ; Survival Analysis ; Time Factors ; Treatment Outcome
Language	English
Publishing date	1994-06
Publishing country	United States
Document type	Comparative Study ; Journal Article
ZDB-ID	80026-0
ISSN	1097-6744 ; 0002-8703
ISSN (online)	1097-6744
ISSN	0002-8703
DOI	10.1016/0002-8703(94)90377-8
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Article: Aortic endocarditis after percutaneous balloon valvuloplasty: the role of transesophageal echocardiography in early detection and follow-up.

Chirillo, F / Cavarzerani, A / Totis, O / Bruni, A / Giommi, L / Marton, F / Cuzzato, V

American heart journal

1992 Volume 124, Issue 1, Page(s) 223–225

MeSH term(s)	Aged ; Aortic Valve/diagnostic imaging ; Catheterization/adverse effects ; Echocardiography/methods ; Endocarditis, Bacterial/diagnostic imaging ; Endocarditis, Bacterial/microbiology ; Humans ; Male ; Staphylococcal Infections/diagnostic imaging ; Staphylococcal Infections/etiology ; Staphylococcus epidermidis/isolation & purification
Language	English
Publishing date	1992-07
Publishing country	United States
Document type	Case Reports ; Journal Article
ZDB-ID	80026-0
ISSN	1097-6744 ; 0002-8703
ISSN (online)	1097-6744
ISSN	0002-8703
DOI	10.1016/0002-8703(92)90948-u
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Article: Iter diagnostici e terapeutici nell'embolia polmonare: inchiesta nella Regione Veneto.

Roncon, L / Zonzin, P / Giommi, L / Favretto, G / Fiorencis, R / Zampieri, P / Gazzabin, M / Stritoni, P

Cardiologia (Rome, Italy)

1998 Volume 44, Issue 8, Page(s) 735–741

Abstract: Background: Pulmonary embolism is one of the most frequent cardiopulmonary diseases, but it is often under- or misdiagnosed. In order to address this issue and to identify flow charts that are commonly used in pulmonary embolism diagnosis and treatment, ...

Title translation	The diagnostic and therapeutic procedures in pulmonary embolism: a survey in the Veneto Region.
Abstract	Background: Pulmonary embolism is one of the most frequent cardiopulmonary diseases, but it is often under- or misdiagnosed. In order to address this issue and to identify flow charts that are commonly used in pulmonary embolism diagnosis and treatment, 191 clinical wards of internal medicine, cardiology, geriatrics, pneumology and intensive care units, located in the Veneto Region, were surveyed. Methods: An anonymous questionnaire was mailed to each ward in order to collect clinical diagnostic information on all pulmonary embolisms which occurred during 1993. Among the returned questionnaires, 114 (59.6%) had usable information for the analysis. Results: The vast majority of participating centers reported in 1993 less than 10 pulmonary embolism events. No significant differences were observed between internal medicine, geriatrics, pneumology wards and intensive care units. The reported events, however, were slightly higher in the divisions of cardiology with an annual average of 12 events per center. First level diagnostic procedures, such as ECG, chest X-ray and arterial blood gas analysis were chosen and performed in all patients. Interestingly, Doppler echocardiography, which is often not included in official guidelines for pulmonary embolism diagnosis, was performed in 56% of the participating centers. On the contrary, ventilation-perfusion lung scanning, which is considered highly predictive in many diagnostic algorithms, was underutilized (35% perfusion scan, 20% ventilation scan). This underuse was probably due to technical and organizational difficulties. Pulmonary angiography, the most accurate procedure for the diagnosis of pulmonary embolism, was performed in 28% of the patients. During the acute phase, intravenous heparin was commonly used; 91% of patients received the infusion continuously, 4% intermittently. Thrombolysis was performed in 25% of the patients. The preferred drugs were recombinant tissue-plasminogen activator (67%), followed by urokinase (20%) and streptokinase (13%). To start thrombolytic therapy, 20% of the interviewed clinicians considered sufficient the evidence of clinical manifestations of pulmonary embolism confirmed by echocardiographic data. At discharge, prescription of oral anticoagulant drugs was common (78%) for at least 6 months (47%). Standardized procedures for the diagnosis and treatment of pulmonary embolism were already implemented in 13% of the participating centers. Conclusions: These data suggest a common effort to define unanimous conventional protocols in the management of pulmonary embolism. It should be underlined, however, that a particular attention to the clinical manifestations and a productive collaboration among clinicians with different expertise are required to improve the diagnosis and treatment of pulmonary embolism.
MeSH term(s)	Diagnostic Imaging/statistics & numerical data ; Diagnostic Imaging/utilization ; Fibrinolytic Agents/therapeutic use ; Heparin/therapeutic use ; Humans ; Italy ; Pulmonary Embolism/diagnosis ; Pulmonary Embolism/drug therapy ; Surveys and Questionnaires ; Thrombolytic Therapy/statistics & numerical data ; Thrombolytic Therapy/utilization
Chemical Substances	Fibrinolytic Agents ; Heparin (9005-49-6)
Language	Italian
Publishing date	1998-07-21
Publishing country	Italy
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	1437-0
ISSN	0393-1978 ; 0366-5313
ISSN	0393-1978 ; 0366-5313
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Article: Dissecazione aortica di tipo A: ruolo della angiografia nella valutazione delle caratteristiche morfologiche; confronto con i reperti anatomici e chirurgici.

Giommi, L / Cavallini, C / Franceschini, E / Marton, F / Risica, G / Olivari, Z / Cuzzato, V

Giornale italiano di cardiologia

1991 Volume 21, Issue 1, Page(s) 41–48

Abstract: To evaluate the reliability of cineangiography in identifying some morphologic characteristics of type A aortic dissection, the angiograms of 36 consecutive patients were retrospectively revised and compared with the surgical of necropsy findings. The ... ...

Title translation	Type A aortic dissection: the role of angiography in identifying morphologic features in comparison with autopsy and surgical findings.
Abstract	To evaluate the reliability of cineangiography in identifying some morphologic characteristics of type A aortic dissection, the angiograms of 36 consecutive patients were retrospectively revised and compared with the surgical of necropsy findings. The following features were examined: site and extension of intimal tear (s); extension of the wall dissection; coronary and brachiocephalic arteries involvement; coexisting anuloaortic ectasia; aortic valve state. The angiographic diagnosis of site and extension of the intimal tear was correct in 97 (35/36) and 100% of cases respectively. In one case the presence of an intimal tear at the level of the aortic arch was missed because of the superimposition of the innominate artery. The extension of the wall dissection was correctly identified in 24 out of 25 patients. In one case the presence of distal false lumen thrombosis made the correct diagnosis impossible. The brachiocephalic arteries involvement was always correctly stated while the coronary involvement was suspected in 6 and confirmed in 5 (1 false positive). Anuloectasia was suspected in 12 and confirmed in 10 (2 false positives). In our experience the most challenging diagnosed were the presence of aortic arch tears and the aortic arch and coronary arteries involvement in the dissection. This study confirms that many morphologic features of type A aortic dissection can be adequately assessed by cineangiography.
MeSH term(s)	Adult ; Aged ; Aneurysm, Dissecting/diagnostic imaging ; Aneurysm, Dissecting/pathology ; Aneurysm, Dissecting/surgery ; Angiography ; Aortic Aneurysm/diagnostic imaging ; Aortic Aneurysm/pathology ; Aortic Aneurysm/surgery ; Aortic Valve/diagnostic imaging ; Aortic Valve/pathology ; Autopsy ; Coronary Angiography ; Coronary Vessels/pathology ; Female ; Humans ; Male ; Middle Aged ; Retrospective Studies
Language	Italian
Publishing date	1991-01
Publishing country	Italy
Document type	Journal Article
ZDB-ID	184670-x
ISSN	0046-5968
ISSN	0046-5968
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Article: Coronary angioplasty in single-vessel complex lesions: short- and long-term outcome and factors predicting acute coronary occlusion.

Cavallini, C / Giommi, L / Franceschini, E / Risica, G / Olivari, Z / Marton, F / Cuzzato, V

American heart journal

1991 Volume 122, Issue 1 Pt 1, Page(s) 44–49

Abstract: Percutaneous transluminal coronary angioplasty (PTCA) of complex coronary lesions (plaque ulceration and/or thrombus) has an increased risk of procedural complications. To assess the influence of these angiographic features on immediate and long-term ... ...

Abstract	Percutaneous transluminal coronary angioplasty (PTCA) of complex coronary lesions (plaque ulceration and/or thrombus) has an increased risk of procedural complications. To assess the influence of these angiographic features on immediate and long-term results of PTCA, we prospectively compared the success rate, incidence of procedural complications, and restenosis rate in two groups of patients selected on the basis of the presence (study group = 30 patients) or absence (control group = 200 patients) of complex morphology at the time of angioplasty. The two groups were similar with regard to extent of coronary artery disease and site of coronary stenosis. Patients in the study group had a higher incidence of periprocedural acute coronary occlusion (47% vs 6%; p less than 0.01), which in 78% of the cases was successfully treated with repeat angioplasty and intracoronary thrombolysis. Univariate correlates of this complication were Canadian Cardiovascular Society class IV (57% vs 19%; p less than 0.05) and recent (less than 30 days) onset of worsening of symptoms (71% vs 31%; p less than 0.05). The incidence of acute myocardial infarction was slightly higher in the study group (6.7% vs 2%; p = NS), and the success rate with redilatation was the same (90%). Clinical and angiographic follow-up data were obtained from all patients in whom the procedure was successful; the restenosis rate was 55% in the study group compared with 36% in the control group (p less than 0.05).(ABSTRACT TRUNCATED AT 250 WORDS)
MeSH term(s)	Acute Disease ; Angioplasty, Balloon, Coronary/adverse effects ; Arterial Occlusive Diseases/etiology ; Coronary Disease/etiology ; Coronary Disease/therapy ; Female ; Follow-Up Studies ; Humans ; Male ; Middle Aged ; Prognosis ; Prospective Studies ; Recurrence ; Time Factors
Language	English
Publishing date	1991-07
Publishing country	United States
Document type	Journal Article
ZDB-ID	80026-0
ISSN	1097-6744 ; 0002-8703
ISSN (online)	1097-6744
ISSN	0002-8703
DOI	10.1016/0002-8703(91)90756-8
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