A Greedy Approach to Hide Sensitive Frequent Itemsets with Reduced Side Effects

The hiding of sensitive knowledge in the form of frequent itemsets, has gained increasing attention over the past years. This paper highlights the process of border revision, which is essential for the identification of hiding solutions bearing no side-effects, and provides efficient algorithms for the computation of the revised positive and the revised negative borders. By utilizing border revision, we unify the theory behind two exact hiding algorithms that guarantee optimal solutions both in terms of database distortion and side-effects introduced by the hiding process. Following that, we propose a novel extension to one of the hiding algorithms that allows it to identify exact hiding solutions to a much wider range of problems (than its original counterpart). Through experimentation, we compare the exact hiding schemes against two state-of-the-art heuristic algorithms and demonstrate their ability to consistently provide solutions of higher quality to a wide variety of hiding problems.

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Association Rule Hiding Based on Intersection Lattice

Mathematical Problems in Engineering ◽

10.1155/2013/210405 ◽

2013 ◽

Vol 2013 ◽

pp. 1-11 ◽

Cited By ~ 4

Author(s):

Hai Quoc Le ◽

Somjit Arch-int ◽

Ngamnij Arch-int

Keyword(s):

Side Effects ◽

Association Rules ◽

Association Rule ◽

Low Complexity ◽

Vital Role ◽

Frequent Itemsets ◽

Intersection Lattice ◽

Data Sanitization ◽

Knowledge Preservation ◽

Sensitive Knowledge

Association rule hiding has been playing a vital role in sensitive knowledge preservation when sharing data between enterprises. The aim of association rule hiding is to remove sensitive association rules from the released database such that side effects are reduced as low as possible. This research proposes an efficient algorithm for hiding a specified set of sensitive association rules based on intersection lattice of frequent itemsets. In this research, we begin by analyzing the theory of the intersection lattice of frequent itemsets and the applicability of this theory into association rule hiding problem. We then formulate two heuristics in order to (a) specify the victim items based on the characteristics of the intersection lattice of frequent itemsets and (b) identify transactions for data sanitization based on the weight of transactions. Next, we propose a new algorithm for hiding a specific set of sensitive association rules with minimum side effects and low complexity. Finally, experiments were carried out to clarify the efficiency of the proposed approach. Our results showed that the proposed algorithm, AARHIL, achieved minimum side effects and CPU-Time when compared to current similar state of the art approaches in the context of hiding a specified set of sensitive association rules.

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Gastric Ulcers Produced by Cisplatin

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100099337 ◽

1981 ◽

Vol 39 ◽

pp. 582-583

Author(s):

S.K. Aggarwal ◽

J. San Antonio

Keyword(s):

Electron Microscopy ◽

Single Dose ◽

Side Effects ◽

Antitumor Agent ◽

Gastric Ulcers ◽

Enzyme Cytochemistry ◽

Intestinal Toxicity ◽

Ovarian Cancers ◽

Inner Surface

Cisplatin (cis-dichlorodiammineplatinum(II)) a potent antitumor agent is now available for the treatment of testicular and ovarian cancers. It is however, not free from its serious side effects including nephrotoxicity, gastro intestinal toxicity, myelosuppression, and ototoxicity. Here we now report that the drug produces peculiar bloating of the stomach in rats and induces acute ulceration.Wistar-derived rats weighing 200-250 g were administered cisplatin(9 mg/kg) ip as a single dose in 0.15 M NaCl. After 3 days the animals were sacrificed by decapitation. The stomachs were removed, the contents analyzed for pepsin and acidity. The inner surface was examined with a dissecting microscope after a moderate stretching for ulcers. Affected areas were fixed and processed for routine electron microscopy and enzyme cytochemistry.The drug treated animals kept on food and water consistently showed bloating and lesions (Fig. 1) with a frequency of 6-70 ulcers in the rumen section of the stomachs.

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Effects of cisplatin treatment on the rat neurohypophysis

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100142256 ◽

1986 ◽

Vol 44 ◽

pp. 122-123

Author(s):

J.M. Fadool ◽

P.J. Boyer ◽

S.K. Aggarwal

Keyword(s):

Side Effects ◽

Urine Output ◽

Morphological Changes ◽

Limiting Factor ◽

Antineoplastic Drugs

Cisplatin (CDDP) is currently one of the most valuable antineoplastic drugs available. However, it has severe toxic side effects of which nephrotoxicity is the major dose limiting factor in its use. It induces morphological changes in the kidney with hampered urine output. The present study is an effort to determine the influence of the drug on the neurohypophysis for any antidiuretic effects on the kidney.

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Severe Drooling and Treatment With Botulinum Toxin

Perspectives on Swallowing and Swallowing Disorders (Dysphagia) ◽

10.1044/sasd21.1.15 ◽

2012 ◽

Vol 21 (1) ◽

pp. 15-21

Author(s):

Merete Bakke ◽

Allan Bardow ◽

Eigild Møller

Keyword(s):

Botulinum Toxin ◽

Side Effects ◽

Health Risk ◽

Flow Rate ◽

Clinical Evidence ◽

Acetylcholine Release ◽

Psychosocial Problems ◽

Rate Reduction ◽

Local Inhibition ◽

Surgical Treatments

Severe drooling is associated with discomfort and psychosocial problems and may constitute a health risk. A variety of different surgical and non-surgical treatments have been used to diminish drooling, some of them with little or uncertain effect and others more effective but irreversible or with side effects. Based on clinical evidence, injection with botulinum toxin (BTX) into the parotid and submandibular glands is a useful treatment option, because it is local, reversible, and with few side effects, although it has to be repeated. The mechanism of BTX is a local inhibition of acetylcholine release, which diminishes receptor-coupled secretion and results in a flow rate reduction of 25–50% for 2–7 months.

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