CN113628716A - A prescription recommendation system - Google Patents

A prescription recommendation system Download PDF

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CN113628716A
CN113628716A CN202110897823.9A CN202110897823A CN113628716A CN 113628716 A CN113628716 A CN 113628716A CN 202110897823 A CN202110897823 A CN 202110897823A CN 113628716 A CN113628716 A CN 113628716A
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prescription
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medicines
medicine
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CN113628716B (en
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鲁昭龙
黎远帆
徐盛
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Xiamen Yifang Jianshu Information Technology Co ltd
Basebit Shanghai Information Technology Co ltd
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    • G—PHYSICS
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    • G16H20/00—ICT specially adapted for therapies or health-improving plans, e.g. for handling prescriptions, for steering therapy or for monitoring patient compliance
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Abstract

本发明公开了一种处方推荐系统，包括特征抽取模块、处方预测模块、药品扩展模块、药品禁忌检查模块、剂量友好化模块和配伍禁忌模块，所述处方预测模块中包含若干按照专科类别分别构建的专科处方模型。本发明实现了在同一个任务中同时训练预测药品种类和剂量，从而为患者提供更加精准和个性化的推荐处方。

Figure 202110897823

The invention discloses a prescription recommendation system, comprising a feature extraction module, a prescription prediction module, a drug expansion module, a drug contraindication checking module, a dose-friendly module and a compatibility contraindication module. The specialist prescription model. The invention realizes training to predict the type and dosage of medicines in the same task at the same time, so as to provide patients with more accurate and personalized recommended prescriptions.

Figure 202110897823

Description

Prescription recommendation system
Technical Field
The invention relates to the technical field of computers, in particular to a prescription recommendation system.
Background
In clinical work, the prescription recommendation system can improve the work efficiency of a third-level hospital, can achieve the aim of 'knowledge sinking of a higher-level hospital' for a primary hospital, achieves the effect of knowledge inheritance, and has important value.
Existing prescription recommendation systems mainly use collaborative filtering techniques or model classifier modes. The method adopts a collaborative filtering technology, wherein the statistical distribution of the medication information of the same diagnosed patient is obtained according to the statistics of the medication information of the same diagnosed patient, and then the medicine which is similar to the target patient and has the highest use rate is recommended, and the method lacks enough generalization capability; the model classifier mode only can train the medicine type, and the numerical variable of the dosage cannot be effective.
Disclosure of Invention
To solve the above problems, the present invention provides a prescription recommendation system.
The invention adopts the following technical scheme:
a prescription recommendation system comprises a feature extraction module, a prescription prediction module, a medicine expansion module, a medicine contraindication checking module, a dose friendly module and a compatibility contraindication module, wherein the prescription prediction module comprises a plurality of special prescription models which are respectively constructed according to special categories;
the work flow of the system is as follows:
s1, inputting medical record information and the special category, and extracting the patient characteristics in the medical record by a characteristic extraction module;
s2, inputting the patient characteristics into a corresponding special prescription model by a prescription prediction module according to the special category of the medical record information to predict the prescription, and outputting a recommended medicine and a corresponding dosage and usage;
s3, the medicine expansion module searches for similar medicines which have the same type and the same main components as the recommended medicines from the medicine library;
s4, the medicine contraindication checking module checks whether the use contraindication exists according to the medical record information;
s5, the dose friendly module converts the main component dose of the medicine into a user-friendly administration mode according to the specific specifications of the recommended medicine and the similar medicine;
s6, the incompatibility module further checks whether the prescription has incompatibility among medicines and outputs a final recommended prescription.
Further, the characteristics in the medical record information comprise symptom signs, examination results, medical history, patient age and patient sex.
Further, the specialist prescription model is used for classifying and scoring the medicines, and divides the medicines into a plurality of main classes according to the functions of the medicines, wherein each main class comprises a plurality of sub-classes of medicines which have the same functions and can be replaced mutually, and each sub-class of medicines comprises a plurality of commonly used doses.
Further, the special prescription model comprises a representation layer, an embedding layer, a multi-residual layer, an application layer and a multitask loss function, wherein the representation layer is used for collecting medicine function characteristics, and the application layer comprises a main classification scoring layer, a sub-classification scoring layer and a dose grade scoring layer.
Further, the primary classification scoring layer is used for weighting and scoring the primary classification; the sub-classification scoring layer is used for carrying out weight scoring on the sub-class medicines; the dose grade scoring layer is used for weighting and scoring the common dose of the subclass medicines.
Further, the multitask penalty function L is specifically:
Figure BDA0003198683340000021
wherein p ismainA probability estimate representing a principal class;
Figure BDA0003198683340000022
probability estimation of the corresponding subcategories of the ith main classification is represented;
Figure BDA0003198683340000023
a probability estimate representing the dose corresponding to the jth sub-class of the ith main class; gtmainA fact label representing a master classification;
Figure BDA0003198683340000024
representing the ith master classificationA fact label for the corresponding sub-category;
Figure BDA0003198683340000025
a fact label of a dose corresponding to a jth sub-class of the ith main class;
Figure BDA0003198683340000026
indicating whether the dose classification is legal.
After adopting the technical scheme, compared with the background technology, the invention has the following advantages:
1. the prescription prediction module of the prescription recommendation system adopts a special prescription model which is respectively constructed and trained according to special categories, so that the number of medicines to be distinguished by a single model is greatly reduced, the model is a deep learning model which simultaneously represents multiple tasks, the fusion of multi-mode characteristics is realized by using a deep cross network, specifically, a representation layer is the characteristics of a patient, an application layer divides corresponding medicines into a plurality of classes according to functions aiming at different special categories and medicine functions, no overlapping exists between the classes, the dosage and the usage of each medicine are also independently divided into a branch, namely, the same representation layer information is adopted to train the selection of the classes of the application layer, the selection of the medicines in the classes and the selection of the medicine dosage usage, so that the types and the dosages of the medicines are simultaneously trained and predicted in the same task, the defect that the existing model classifier cannot take effect on the dose numerical type variable is overcome;
2. through the combination of the prescription prediction module and the medicine expansion module, similar medicines are expanded from recommended medicines while the medical record information of the patient is fully considered, and the medicine expansion module has better generalization capability;
3. the system also adopts medical record information of a clinical outstanding doctor as a training material, and the characteristic extraction module extracts a plurality of information such as symptom signs, inspection and medical history in the medical record and matches demographic information such as age, gender and the like as characteristics, so that a more personalized recommended prescription is provided for a patient;
4. the dosage friendly module is combined with the specification of the medicine, the prescription recommendation result is converted into a dosage friendly form, and the patient can conveniently take the medicine according to the prescription.
Drawings
FIG. 1 is a system flow diagram of the present invention;
FIG. 2 is a diagram of a medicine sorting structure according to the present invention;
FIG. 3 is a block diagram of the specialist prescription model of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Examples
As shown in fig. 1, a prescription recommendation system includes a feature extraction module, a prescription prediction module, a drug expansion module, a drug contraindication check module, a dose-friendly module and a compatibility contraindication module, wherein the prescription prediction module includes a plurality of special prescription models respectively constructed according to special categories;
the work flow of the system is as follows:
s1, inputting medical record information and the special category, and extracting the patient characteristics in the medical record by a characteristic extraction module;
s2, inputting the patient characteristics into a corresponding special prescription model by a prescription prediction module according to the special category of the medical record information to predict the prescription, and outputting a recommended medicine and a corresponding dosage and usage;
s3, the medicine expansion module searches for similar medicines which have the same type and the same main components as the recommended medicines from the medicine library;
s4, the medicine contraindication checking module checks whether the use contraindication exists according to the medical record information;
s5, the dose friendly module converts the main component dose of the medicine into a user-friendly administration mode according to the specific specifications of the recommended medicine and the similar medicine;
s6, the incompatibility module further checks whether the prescription has incompatibility among medicines and outputs a final recommended prescription.
The specialist prescription model is used for classifying and scoring medicines, as shown in fig. 2, the medicine is divided into a plurality of main classes according to the functions of the medicines, each main class comprises a plurality of sub-classes of medicines which have the same functions and can be replaced with each other, and each sub-class of medicines comprises a plurality of common dosages.
As shown in fig. 3, the specialist prescription model comprises a presentation layer, an embedding layer, a multi-residual layer, an application layer and a multitask loss function, wherein the presentation layer is used for collecting the medicine function characteristics, and the application layer comprises a main classification scoring layer, a sub-classification scoring layer and a dose level scoring layer. The main classification scoring layer is used for carrying out weight scoring on the main classification; the sub-classification scoring layer is used for carrying out weight scoring on the sub-class medicines; the dose grade scoring layer is used for weighting and scoring the common dose of the subclass medicines.
The multitask loss function L specifically includes:
Figure BDA0003198683340000041
wherein p ismainA probability estimate representing a principal class;
Figure BDA0003198683340000051
probability estimation of the corresponding subcategories of the ith main classification is represented;
Figure BDA0003198683340000052
a probability estimate representing the dose corresponding to the jth sub-class of the ith main class; gtmainA fact label representing a master classification;
Figure BDA0003198683340000053
a fact label representing a sub-classification corresponding to the ith main classification;
Figure BDA0003198683340000054
a fact label of a dose corresponding to a jth sub-class of the ith main class;
Figure BDA0003198683340000055
indicating whether the dose classification is legitimate or not,
Figure BDA0003198683340000056
indicating that the dose classification is not legal,
Figure BDA0003198683340000057
indicating that the dose classification is legal.
The following takes a prescription recommendation process as an example:
1. inputting complete medical record information;
2. and extracting different types of features, namely One-hot types, by a feature extraction module, wherein the method comprises the following steps: acute upper respiratory infection, 10 indicates the diagnosis of the disease, 01 indicates the undiagnosed disease; time type (by day), such as cough days 3; floating point type, such as age (unit year), 3.5 means 3 and half years; all the different types of features are connected in series to form a long vector to form a complete feature, namely the patient feature;
3. the patient characteristics are fed into a prescription prediction module that outputs recommended medications and corresponding dosages and regimens, such as azithromycin (three times a day, 20g each);
4. the information is sent to a medicine expansion module to expand the medicine clarithromycin;
5. the medicine contraindication checking module checks that no special symptoms exist and the medicine can be taken;
6. a dosage friendly module for outputting friendly administration mode, for example, the azithromycin is 10 g/bag, and then the azithromycin is output (three times a day, 2 bags each time);
7. the incompatibility module can be used for prescription dispensing without incompatibility in the prescription.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (6)

1. A prescription recommendation system, characterized by: the system comprises a characteristic extraction module, a prescription prediction module, a medicine expansion module, a medicine contraindication checking module, a dose friendly module and a compatibility contraindication module, wherein the prescription prediction module comprises a plurality of special prescription models which are respectively constructed according to special categories;
the work flow of the system is as follows:
s1, inputting medical record information and the special category, and extracting the patient characteristics in the medical record by a characteristic extraction module;
s2, inputting the patient characteristics into a corresponding special prescription model by a prescription prediction module according to the special category of the medical record information to predict the prescription, and outputting a recommended medicine and a corresponding dosage and usage;
s3, the medicine expansion module searches for similar medicines which have the same type and the same main components as the recommended medicines from the medicine library;
s4, the medicine contraindication checking module checks whether the use contraindication exists according to the medical record information;
s5, the dose friendly module converts the main component dose of the medicine into a user-friendly administration mode according to the specific specifications of the recommended medicine and the similar medicine;
s6, the incompatibility module further checks whether the prescription has incompatibility among medicines and outputs a final recommended prescription.
2. A prescription recommendation system as claimed in claim 1, wherein: patient characteristics in the medical records include signs of symptoms, test results, medical history, patient age, and patient gender.
3. A prescription recommendation system as claimed in claim 2, wherein: the medicines are divided into a plurality of main classes according to the functions of the medicines in the special prescription model, each main class comprises a plurality of sub-classes of medicines which have the same functions and can be replaced mutually, and each sub-class of medicines comprises a plurality of common doses.
4. A prescription recommendation system as claimed in claim 3, wherein: the special prescription model comprises a representation layer, an embedding layer, a multi-residual layer, an application layer and a multitask loss function, wherein the representation layer is used for collecting the characteristics of the patient, and the application layer comprises a main classification scoring layer, a sub-classification scoring layer and a dose grade scoring layer.
5. A prescription recommendation system as claimed in claim 4, wherein: the main classification scoring layer is used for carrying out weight scoring on the main classification; the sub-classification scoring layer is used for carrying out weight scoring on the sub-class medicines; the dose grade scoring layer is used for weighting and scoring the common dose of the subclass medicines.
6. A prescription recommendation system as claimed in claim 5, wherein: the multitask loss function L specifically includes:
Figure FDA0003198683330000021
wherein p ismainA probability estimate representing a principal class;
Figure FDA0003198683330000022
probability estimation of the corresponding subcategories of the ith main classification is represented;
Figure FDA0003198683330000023
a probability estimate representing the dose corresponding to the jth sub-class of the ith main class; gtmainA fact label representing a master classification;
Figure FDA0003198683330000024
a fact label representing a sub-classification corresponding to the ith main classification;
Figure FDA0003198683330000025
a fact label of a dose corresponding to a jth sub-class of the ith main class;
Figure FDA0003198683330000026
indicating whether the dose classification is legal.
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CN115116581A (en) * 2022-07-22 2022-09-27 中国平安人寿保险股份有限公司 Recommended method, recommended device, electronic device and storage medium
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