CN111310287A - Recommendation method and device for mechanical structure information - Google Patents
Recommendation method and device for mechanical structure information Download PDFInfo
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- CN111310287A CN111310287A CN202010092607.2A CN202010092607A CN111310287A CN 111310287 A CN111310287 A CN 111310287A CN 202010092607 A CN202010092607 A CN 202010092607A CN 111310287 A CN111310287 A CN 111310287A
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Abstract
The invention discloses a recommendation method and a recommendation device for mechanical structure information, which are characterized by firstly obtaining historical mechanical structure reference records and historical mechanical structure search records of a user to be recommended and similar users, and then generating a first mechanical structure list according to the historical mechanical structure reference records and the historical mechanical structure search records of the similar users; generating a second mechanical structure list according to historical mechanical structure reference records of the user to be recommended and similar users, and generating a third mechanical structure list according to historical mechanical structure reference records of the user to be recommended and similar users; generating a fourth mechanical structure list according to the historical mechanical structure reference record and the historical mechanical structure search record of the user to be recommended; and finally, generating a mechanical structure recommendation list according to the first mechanical structure list, the second mechanical structure list, the third mechanical structure list and the fourth mechanical structure list. The embodiment of the invention can improve the working efficiency of a designer in designing mechanical equipment.
Description
Technical Field
The invention relates to the technical field of mechanical design, in particular to a method and a device for recommending mechanical structure information.
Background
A mechanical device is formed by combining mechanical structures of all next stages, in the prior art, when a mechanical designer designs the mechanical device through a terminal device such as a computer, all mechanical structure information is obtained by inquiring various mechanical structures stored in the terminal device, then the mechanical structure information is combined and designed according to needs to form a new mechanical device, the designer searches mechanical structure information to be obtained on the terminal device one by one during each design, the terminal device cannot recommend mechanical structure information which is possibly used in the current design to the designer intelligently, and the work efficiency of the designer is low.
Disclosure of Invention
The embodiment of the invention provides a recommendation method and device for mechanical structure information, which can recommend the mechanical structure information to a mechanical designer according to the past search or reference records of the mechanical designer, and improve the working efficiency of the mechanical designer.
An embodiment of the present invention provides a method for recommending mechanical structure information, including: acquiring historical mechanical structure reference records and historical mechanical structure search records of a user to be recommended and similar users; the similar users are users of which the similarity with the user to be recommended reaches a first preset threshold;
generating a first mechanical structure list according to the historical mechanical structure reference records and the historical mechanical structure search records of the similar users;
searching mechanical structures with the same type and the reference times meeting a first preset condition in a preset mechanical structure information base according to the types of all the mechanical structures in the historical mechanical structure reference records of the user to be recommended and the similar user, and generating a second mechanical structure list;
extracting a related attribute value list according to the mechanical structure attributes of all mechanical structures in the historical mechanical structure reference records of the user to be recommended and the similar users; the mechanical structure attribute comprises a plurality of attribute items, and each attribute item corresponds to an attribute value; then, according to the related attribute value list, searching in the preset mechanical structure information base, and generating a third mechanical structure list by using the mechanical structure of which the mechanical structure attribute accords with a second preset condition;
searching mechanical structures with the same type and the reference times meeting a third preset condition in a preset mechanical structure information base according to the type of each mechanical mechanism in the historical mechanical structure reference record and the historical mechanical structure search record of the user to be recommended, and generating a fourth mechanical structure list;
and generating a mechanical structure recommendation list according to the reference times of all mechanical structures in the first mechanical structure list, the second mechanical structure list, the third mechanical structure list and the fourth mechanical structure list, and then recommending the mechanical structure information of all mechanical structures in the mechanical structure recommendation list to the user to be recommended.
Further, the similarity of two users is calculated by the following formula:
where u, v are two users and N (u) N (v) is a collection of mechanical structures in the historical mechanical structure reference records of the two users.
Further, the generating a first mechanical structure list according to the historical mechanical structure reference record and the historical mechanical structure search record of the similar user specifically includes:
and generating a first mechanical structure list according to the historical mechanical structure reference records of the similar users in the preset days and the historical mechanical structure search records of the similar users in the preset days, wherein the search times exceed a second preset threshold value.
Further, according to the types of the mechanical structures in the history mechanical structure reference records of the user to be recommended and the similar user, a mechanical structure with the same type and the reference times meeting a first preset condition is searched in a preset mechanical structure information base, and a second mechanical structure list is generated, specifically:
and searching the first N mechanical structures with the same type and the largest reference times in a preset mechanical structure information base according to the types of the mechanical structures in the historical mechanical structure reference records of the recommended user and the similar user in preset days, and generating a second mechanical structure list.
Further, the extracting a related attribute value list according to the mechanical structure attribute of each mechanical structure in the historical mechanical structure reference records of the user to be recommended and the similar user specifically includes:
extracting mechanical structure attributes of all mechanical structures in historical mechanical structure reference records of the user to be recommended and the similar users within preset days; wherein the mechanical structure attribute comprises the following attribute items: color, material and size;
and counting the number of the mechanical structures corresponding to each type of attribute value according to the attribute value of each attribute item of each mechanical structure, extracting the attribute values of which the number is larger than a preset third threshold value, and generating the related attribute value list.
Further, according to the type of each mechanical mechanism in the historical mechanical structure reference record and the historical mechanical structure search record of the user to be recommended, a mechanical structure with the same type and the reference times meeting a third preset condition is searched in a preset mechanical structure information base, and a fourth mechanical structure list is generated, specifically:
and searching the front W mechanical structures with the same type and the largest reference times in a preset mechanical structure information base according to the types of all the mechanical structures in the historical mechanical structure search records of the historical mechanical structure reference records of the user to be recommended within the preset days, and generating a fourth mechanical structure list.
Further, the generating a mechanical structure recommendation list according to the reference times of each mechanical structure in the first mechanical structure list, the second mechanical structure list, the third mechanical structure list, and the fourth mechanical structure list specifically includes:
extracting the first E mechanical mechanisms with the largest number of times of reference in the fourth mechanical structure list to obtain a first mechanical structure recommendation sublist;
merging the first mechanical structure list, the second mechanical structure list and the third mechanical structure list to generate a fifth recommendation list, and then extracting the first T mechanical structures with the most reference times in the fifth recommendation list to obtain a second mechanical structure recommendation sub-list;
and generating the mechanical structure recommendation list according to the first mechanical structure recommendation sub-list and the second mechanical structure recommendation sub-list.
Further, the mechanical structure information includes a mechanical structure name, a mechanical structure attribute, a mechanical structure type, and a mechanical structure diagram.
On the basis of the above method item embodiment, the present invention correspondingly provides an apparatus item embodiment;
another embodiment of the present invention correspondingly provides a device for recommending mechanical structure information, including: the system comprises a data acquisition module, a first mechanical structure list generation module, a second mechanical structure list generation module, a third mechanical structure list generation module, a fourth mechanical structure list generation module and a recommendation module;
the data acquisition module is used for acquiring historical mechanical structure reference records and historical mechanical structure search records of the user to be recommended and similar users; the similar users are users of which the similarity with the user to be recommended reaches a first preset threshold;
the first mechanical structure list generating module is used for generating a first mechanical structure list according to the historical mechanical structure reference records and the historical mechanical structure search records of the similar users;
the second mechanical structure list generating module is used for searching the mechanical structures with the same type and the reference times meeting a first preset condition in a preset mechanical structure information base according to the types of all the mechanical structures in the historical mechanical structure reference records of the user to be recommended and the similar user, and generating a second mechanical structure list;
the third mechanical structure list generating module is used for extracting a related attribute value list according to the mechanical structure attributes of all mechanical structures in the historical mechanical structure reference records of the user to be recommended and the similar users; the mechanical structure attribute comprises a plurality of attribute items, and each attribute item corresponds to an attribute value; then, according to the related attribute value list, searching in the preset mechanical structure information base, and generating a third mechanical structure list by using the mechanical structure of which the mechanical structure attribute accords with a second preset condition;
the fourth mechanical structure list generating module is used for searching mechanical structures with the same type and the reference times meeting a third preset condition in a preset mechanical structure information base according to the type of each mechanical mechanism in the historical mechanical structure reference record and the historical mechanical structure search record of the user to be recommended, and generating a fourth mechanical structure list;
the recommending module is used for generating a mechanical structure recommending list according to the reference times of all mechanical structures in the first mechanical structure list, the second mechanical structure list, the third mechanical structure list and the fourth mechanical structure list, and then recommending the mechanical structure information of all the mechanical structures in the mechanical structure recommending list to the user to be recommended.
The embodiment of the invention has the following beneficial effects:
the embodiment of the invention provides a recommendation method and a recommendation device for various mechanical structure information, wherein the method comprises the steps of firstly obtaining historical mechanical structure reference records and historical mechanical structure search records of a user to be recommended and similar users, and then generating a first mechanical structure list according to the historical mechanical structure reference records and the historical mechanical structure search records of the similar users; generating a second mechanical structure list according to the types of all mechanical structures in the historical mechanical structure reference records of the user to be recommended and the similar user, and generating a third mechanical structure list according to the mechanical structure attributes of all mechanical structures in the historical mechanical structure reference records of the user to be recommended and the similar user; generating a fourth mechanical structure list according to the type of each mechanical mechanism in the historical mechanical structure reference record and the historical mechanical structure search record of the user to be recommended; and finally, generating a mechanical structure recommendation list according to the reference times of all mechanical structures in the first mechanical structure list, the second mechanical structure list, the third mechanical structure list and the fourth mechanical structure list, and recommending the mechanical structure information of all the mechanical structures in the mechanical structure recommendation list to the user to be recommended. Because the historical mechanical structure reference record and the historical mechanical structure search record of the user to be recommended can well show some mechanical structures which may be needed by the user to be recommended when the user to be recommended designs mechanical equipment at ordinary times, the mechanical structure recommendation list is generated according to the historical mechanical structure reference record and the historical mechanical structure search record of the user to be recommended and recommended to the user, and therefore if the mechanical structure which is needed by the current design of the user to be recommended is exactly in the generated mechanical structure recommendation list, the user to be recommended does not need to search again, and therefore the working efficiency of the user to be recommended on the design of the mechanical equipment is improved to a certain extent.
Drawings
Fig. 1 is a schematic flow chart of a method for recommending mechanical structure information according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of an apparatus for recommending mechanical structure information according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, an embodiment of the present invention provides a method for recommending mechanical structure information, including the following steps:
step S101, obtaining historical mechanical structure reference records and historical mechanical structure search records of a user to be recommended and similar users; the similar users are users of which the similarity with the user to be recommended reaches a first preset threshold value.
And S102, generating a first mechanical structure list according to the historical mechanical structure reference record and the historical mechanical structure search record of the similar user.
Step S103, according to the types of all mechanical structures in the historical mechanical structure reference records of the user to be recommended and the similar user, searching the mechanical structures which have the same type and the reference times meeting a first preset condition in a preset mechanical structure information base, and generating a second mechanical structure list.
Step S104, extracting a related attribute value list according to the mechanical structure attributes of all mechanical structures in the historical mechanical structure reference records of the user to be recommended and the similar users; the mechanical structure attribute comprises a plurality of attribute items, and each attribute item corresponds to an attribute value; and then searching in the preset mechanical structure information base according to the related attribute value list, and generating a third mechanical structure list according to the mechanical structure of which the mechanical structure attribute accords with a second preset condition.
Step S105, according to the type of each mechanical mechanism in the historical mechanical structure reference record and the historical mechanical structure search record of the user to be recommended, mechanical structures which are identical in type and meet third preset conditions are searched in a preset mechanical structure information base, and a fourth mechanical structure list is generated.
Step S106, generating a mechanical structure recommendation list according to the reference times of all mechanical structures in the first mechanical structure list, the second mechanical structure list, the third mechanical structure list and the fourth mechanical structure list, and recommending the mechanical structure information of all the mechanical structures in the mechanical structure recommendation list to the user to be recommended.
In step S101, the historical mechanical structure reference record and the historical mechanical structure search record of the user to be recommended and the similar user refer to reference and search records of the mechanical structure in a preset mechanical structure information base for the user to be recommended and the similar user in preset days, the preferred preset days are 3 days, and the mechanical structure information of various mechanical structures is stored in the preset mechanical structure information base. In the embodiment of the present invention, the mechanical structure information includes, but is not limited to, a mechanical structure name, a mechanical structure attribute, a mechanical structure type, and a mechanical structure diagram.
In a preferred embodiment, the similarity of two users is calculated by:
the method comprises the steps that u and v are two users, N (u) ∩ N (v) shows that the number of mechanical structures in a new set is obtained by taking the intersection of sets of the mechanical structures in historical mechanical structure reference records of the two users, and after the new set is formed, N (u) shows the number of the mechanical structures in the historical mechanical structure reference record of the u user, and N (v) shows the number of the mechanical structures in the historical mechanical structure reference record of the v user.
For example, the mechanical structure in the history mechanical structure reference record of the U user is a butterfly valve, a cylinder and an idler wheel, the mechanical structure in the history mechanical structure reference record of the v user is a butterfly valve, a cylinder, a bottle blocking structure and an idler wheel assembly, and the mechanical structure in the new set formed by taking the intersection of the set of the mechanical structures in the history mechanical structure reference records of the two users is the butterfly valve and the cylinder, so that the number of the mechanical structures in the new set is 2, namely the value of n (U) ∩ n (v) at this time is 2, and n (U) is | n (U) | n (v) |3| 4| 12.
In the invention, a user to be recommended and a plurality of other users are selected firstly, then the similarity between the user to be recommended and each other user is calculated respectively through the formula, once the similarity reaches a first preset threshold value, the other users are taken as the similar users, and the preferred first preset threshold value is 0.5.
And step S102, specifically, according to the historical mechanical structure reference records of the similar users in the preset number of days and the historical mechanical structure search records in the preset number of days and the search times of which exceed the second preset threshold, generating a first mechanical structure list. The preferred preset number of days is consistent with the preset number of days in step S101, which is 3 days (the preset number of days involved in all steps in the embodiment of the present invention is consistent), and the second preset threshold is 5, that is, the mechanical structure in the history mechanical structure application record within 3 days of the similar user, the mechanical structure in the search record within 3 days and the search times exceeding 3 times are determined, and then the two are combined to form the first mechanical structure list. For example: historical mechanical structure reference records for a similar user over 3 days are: butterfly valve, cylinder, inertia wheel. The corresponding quoted times are respectively 3 times of butterfly valve, 5 times of cylinder and 7 times of inertia wheel. The historical mechanical structure search records of similar users within 3 days are as follows: the corresponding search times are butterfly valve 5 times, filling nozzle component 4 times, cylinder bottle separating mechanism 2 times, cylinder 6 times and inertia wheel 9 times. Then the first list of mechanical structures generated at this time is: butterfly valve, cylinder, inertia wheel, filling mouth subassembly.
For step S103, specifically, according to the types of the mechanical structures in the historical mechanical structure reference records of the user to be recommended and the similar user, a second mechanical structure list is generated by searching for a mechanical structure in a preset mechanical structure information base, where the mechanical structure has the same type and the reference times meet a first preset condition, and specifically:
and searching the first N mechanical structures with the same type and the largest reference times in a preset mechanical structure information base according to the types of the mechanical structures in the historical mechanical structure reference records of the recommended user and the similar user in preset days, and generating a second mechanical structure list.
The method comprises the steps of merging historical mechanical structure reference records of a recommended user and similar users within preset days, searching the first N mechanical structures with the same type and the largest reference times in a preset mechanical structure information base according to the types of all mechanical structures in a merged set, and generating a second mechanical structure list.
It should be noted that each mechanical structure is classified into different types according to the decomposition level in the preset mechanical structure information base, and the types specifically include the following types: industry type, equipment, special equipment model, subsystem, mechanism, component, part. Of course, the specific classification standard and the number of types can be adjusted according to actual situations. The value of N is preferably 5.
It is assumed that the historical mechanical structure reference records of the user to be recommended are butterfly valve (component class), air cylinder (component class) and bottle blocking structure (part class).
Historical mechanical structure references for similar users are recorded as butterfly valve (parts class), cylinder (parts class), inertia wheel (parts class).
Then, the set obtained by combining the historical mechanical structure reference record of the user to be recommended and the historical mechanical structure reference record of the similar user is as follows: butterfly valve (parts), cylinder (parts), bottle blocking structure (parts) inert wheel (parts). The types of the mechanical structures in the set are component types and part types, then the first 5 mechanical structures with the types belonging to the component types or the part types are searched in a preset mechanical structure information base at the moment, and the first mechanical structures with the largest number of times of calling are called within 3 days, so that a second mechanical structure type table is generated.
For step S104, extracting a related attribute value list according to the mechanical structure attribute of each mechanical structure in the historical mechanical structure reference records of the user to be recommended and the similar user, specifically:
extracting mechanical structure attributes of all mechanical structures in historical mechanical structure reference records of the user to be recommended and the similar users within preset days; wherein the mechanical structure attribute comprises the following attribute items: color, material and size;
and counting the number of the mechanical structures corresponding to each type of attribute value according to the attribute value of each attribute item of each mechanical structure, extracting the attribute values of which the number is larger than a preset third threshold value, and generating the related attribute value list.
And then searching in the preset mechanical structure information base according to the related attribute value list, wherein the mechanical structure with the mechanical structure attribute meeting a second preset condition generates a third mechanical structure list, which specifically comprises the following steps:
and searching in the preset mechanical structure information base, wherein the mechanical structure attribute comprises mechanical structures of which the attribute values of at least M attribute items are in the related attribute value list, and generating a third mechanical structure list.
Specifically, the historical mechanical structure reference records of the user to be recommended are a butterfly valve (color: silver, material: aluminum alloy, size: A), a cylinder (color: copper, material: copper alloy, size: B), and a bottle blocking structure (color: silver, material: aluminum alloy, size: C).
The historic mechanical structure quotes for similar users are recorded as butterfly valve (color: silver, material: aluminum alloy, size: a), cylinder (color: copper, material: copper alloy, size: B), inertia wheel (color: silver, material: iron alloy, size: D).
And merging the historical mechanical structure reference record of the user to be recommended and the historical mechanical structure reference record of the similar user (namely, taking the union of the two records) to obtain a butterfly valve (the color is silver, the material is aluminum alloy and the size is A), a cylinder (the color is copper, the material is copper alloy and the size is B), a bottle blocking structure (the color is silver, the material is aluminum alloy and the size is C) and an inertia wheel (the color is silver, the material is iron alloy and the size is D). The number of the mechanical structures corresponding to the silver attribute value is 3, the number of the mechanical structures corresponding to the copper attribute value is 1, the number of the mechanical structures corresponding to the aluminum alloy attribute value is 2, the number of the mechanical structures corresponding to the copper alloy attribute value is 1, the number of the mechanical structures corresponding to the iron alloy attribute value is 1, the number of the mechanical structures corresponding to the dimension a attribute value is 1, the number of the mechanical structures corresponding to the dimension B attribute value is 1, the number of the mechanical structures corresponding to the dimension C attribute value is 1, the number of the mechanical structures corresponding to the dimension D attribute value is 1, and the third threshold value is 1, so that the finally extracted related attribute value list is the silver color and the aluminum alloy material. And then searching a mechanical structure with at least M attribute values in the related attribute value list in a preset mechanical mechanism information base, and if M is 2, just searching a mechanical structure with the attribute values including silver color and aluminum alloy materials in the preset mechanical mechanism information base to form a third mechanical structure list.
And step S105, specifically, according to the type of each mechanical mechanism in the historical mechanical structure reference record and the historical mechanical structure search record of the user to be recommended in the preset number of days, searching the previous W mechanical structures with the same type and the largest reference times in a preset mechanical structure information base, and generating a fourth mechanical structure list.
The historical mechanical structure reference records of the user to be recommended are assumed to be a butterfly valve (component class), a cylinder (component class) and a bottle blocking structure (part class); the historical mechanical structure searching records are butterfly valves (parts), air cylinders (parts), bottle blocking structures (parts), fixing knobs (parts) and electric eyes (parts).
And merging (merging) the historical mechanical structure reference record and the historical mechanical structure search record of the user to be recommended to obtain a butterfly valve (component), a cylinder (component), a bottle blocking structure (component), a fixed knob (component) and an electric eye (component), wherein the butterfly valve (component), the cylinder (component), the bottle blocking structure (component), the fixed knob (component) and the electric eye (component) can be all mechanical structures belonging to the component and the component, and then the former W mechanical structures which are of the type of the component or the component and have the largest reference times are searched in a preset mechanical structure information base to generate a fourth mechanical structure list. Preferably, W is. The first 5 mechanical structures with the types of parts or components and the maximum number of references are searched in a preset mechanical structure information base, and a fourth mechanical structure list is generated.
For step S106, specifically extracting the top E mechanical mechanisms with the largest number of times of reference in the fourth mechanical structure list, and obtaining a first mechanical structure recommendation sub-list;
merging the first mechanical structure list, the second mechanical structure list and the third mechanical structure list to generate a fifth recommendation list, and then extracting the first T mechanical structures with the most reference times in the fifth recommendation list to obtain a second mechanical structure recommendation sub-list;
and generating the mechanical structure recommendation list according to the first mechanical structure recommendation sub-list and the second mechanical structure recommendation sub-list.
Preferably E is 2 and T is 3.
Assume the fourth mechanical structure list is: the device comprises a reflector adjusting assembly, guardrails, welding strips, a motor and a locking button, wherein the first two mechanical structures with the largest number of times of reference are the guardrails and the motor, and the first mechanical structure recommendation sub-list is the guardrails and the motor.
The first mechanical structure list is assumed to be the assembly of a filling nozzle assembly, a cylinder bottle separating mechanism, an inertia wheel, a cross locking knob, an adjusting shaft and an idler wheel; the second mechanical structure list is: the assembling machine comprises a reflection assembly, a metering cylinder assembly, a central guardrail shaft and a guardrail support; third mechanical structure list: the bottle stopper comprises a cylinder body, an assembling machine, a bottle blocking mechanism, a filling nozzle assembly and a filling nozzle lifting assembly; then the fifth recommendation list generated by combining the first mechanical structure list, the second mechanical structure list, and the third mechanical structure list is: the device comprises a filling nozzle assembly, a cylinder bottle separating mechanism, an inert wheel, a cross locking knob, an adjusting shaft, an idler wheel assembly, an assembling machine, a reflecting assembly, a metering cylinder assembly, a central guardrail shaft, a guardrail support, a cylinder body, a bottle blocking mechanism and a filling nozzle lifting assembly; the first 3 mechanical structures with the largest number of times of reference in the fifth recommendation list are assumed to be inertia wheels, adjusting shafts and central guardrail shafts; the second mechanical structure recommendation sub-list is an idler wheel, an adjustment shaft, a center fence shaft.
And finally, generating a recommended list of the mechanical structure, which comprises a guardrail, a motor, an inertia wheel, an adjusting shaft and a central guardrail shaft. And then recommending the mechanical structure information of each mechanical structure in the mechanical structure recommendation list to a user to be recommended.
On the basis of the method item test example, correspondingly providing an apparatus item embodiment;
as shown in fig. 2, another embodiment of the present invention provides an apparatus for recommending mechanical structure information, including: the system comprises a data acquisition module, a first mechanical structure list generation module, a second mechanical structure list generation module, a third mechanical structure list generation module, a fourth mechanical structure list generation module and a recommendation module;
the data acquisition module is used for acquiring historical mechanical structure reference records and historical mechanical structure search records of the user to be recommended and similar users; the similar users are users of which the similarity with the user to be recommended reaches a first preset threshold;
the first mechanical structure list generating module is used for generating a first mechanical structure list according to the historical mechanical structure reference records and the historical mechanical structure search records of the similar users;
the second mechanical structure list generating module is used for searching the mechanical structures with the same type and the reference times meeting a first preset condition in a preset mechanical structure information base according to the types of all the mechanical structures in the historical mechanical structure reference records of the user to be recommended and the similar user, and generating a second mechanical structure list;
the third mechanical structure list generating module is used for extracting a related attribute value list according to the mechanical structure attributes of all mechanical structures in the historical mechanical structure reference records of the user to be recommended and the similar users; the mechanical structure attribute comprises a plurality of attribute items, and each attribute item corresponds to an attribute value; then, according to the related attribute value list, searching in the preset mechanical structure information base, and generating a third mechanical structure list by using the mechanical structure of which the mechanical structure attribute accords with a second preset condition;
the fourth mechanical structure list generating module is used for searching mechanical structures with the same type and the reference times meeting a third preset condition in a preset mechanical structure information base according to the type of each mechanical mechanism in the historical mechanical structure reference record and the historical mechanical structure search record of the user to be recommended, and generating a fourth mechanical structure list;
the recommending module is used for generating a mechanical structure recommending list according to the reference times of all mechanical structures in the first mechanical structure list, the second mechanical structure list, the third mechanical structure list and the fourth mechanical structure list, and then recommending the mechanical structure information of all the mechanical structures in the mechanical structure recommending list to the user to be recommended.
The method of the present invention may be implemented as a method for recommending mechanical structure information according to any method embodiment of the present invention.
The recommendation device of the mechanical structure information can be computing equipment such as a desktop computer, a notebook computer, a palm computer and a cloud server. The recommendation of the mechanical structure information can include, but is not limited to, a processor and a memory. It will be understood by those skilled in the art that the schematic diagram 2 is merely a recommended example of the mechanical structure information, and does not constitute a limitation on the recommended means of the mechanical structure information, and may include more or less components than those shown, or some components in combination, or different components.
It should be noted that the above-described device embodiments are merely illustrative, where the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. In addition, in the drawings of the embodiment of the apparatus provided by the present invention, the connection relationship between the modules indicates that there is a communication connection between them, and may be specifically implemented as one or more communication buses or signal lines. One of ordinary skill in the art can understand and implement it without inventive effort.
By implementing the embodiment of the invention, the mechanical structure recommendation list can be generated and recommended to the user according to the historical mechanical structure reference record and the historical mechanical structure search record of the user to be recommended, so that if the mechanical structure required by the current design of the user to be recommended is exactly in the generated mechanical structure recommendation list, the user to be recommended does not need to search again, and the working efficiency of the user to be recommended on the design of mechanical equipment is improved to a certain extent.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (10)
1. A method for recommending mechanical structure information is characterized by comprising the following steps:
acquiring historical mechanical structure reference records and historical mechanical structure search records of a user to be recommended and similar users; the similar users are users of which the similarity with the user to be recommended reaches a first preset threshold;
generating a first mechanical structure list according to the historical mechanical structure reference records and the historical mechanical structure search records of the similar users;
searching mechanical structures with the same type and the reference times meeting a first preset condition in a preset mechanical structure information base according to the types of all the mechanical structures in the historical mechanical structure reference records of the user to be recommended and the similar user, and generating a second mechanical structure list;
extracting a related attribute value list according to the mechanical structure attributes of all mechanical structures in the historical mechanical structure reference records of the user to be recommended and the similar users; the mechanical structure attribute comprises a plurality of attribute items, and each attribute item corresponds to an attribute value; then, according to the related attribute value list, searching in the preset mechanical structure information base, and generating a third mechanical structure list by using the mechanical structure of which the mechanical structure attribute accords with a second preset condition;
searching mechanical structures with the same type and the reference times meeting a third preset condition in a preset mechanical structure information base according to the type of each mechanical mechanism in the historical mechanical structure reference record and the historical mechanical structure search record of the user to be recommended, and generating a fourth mechanical structure list;
and generating a mechanical structure recommendation list according to the reference times of all mechanical structures in the first mechanical structure list, the second mechanical structure list, the third mechanical structure list and the fourth mechanical structure list, and then recommending the mechanical structure information of all mechanical structures in the mechanical structure recommendation list to the user to be recommended.
2. A recommendation method of mechanical structure information according to claim 1, characterized in that the similarity of two users is calculated by the following formula:
3. the method for recommending mechanical structure information according to claim 1, wherein the generating a first mechanical structure list according to the historical mechanical structure reference record and the historical mechanical structure search record of the similar user specifically comprises:
and generating a first mechanical structure list according to the historical mechanical structure reference records of the similar users in the preset days and the historical mechanical structure search records of the similar users in the preset days, wherein the search times exceed a second preset threshold value.
4. The method for recommending mechanical structure information according to claim 1, wherein the step of searching for the mechanical structures with the same type and the number of times of reference meeting a first preset condition in a preset mechanical structure information base according to the types of the mechanical structures in the historical mechanical structure reference records of the user to be recommended and the similar user to generate a second mechanical structure list specifically comprises the steps of:
and searching the first N mechanical structures with the same type and the largest reference times in a preset mechanical structure information base according to the types of the mechanical structures in the historical mechanical structure reference records of the recommended user and the similar user in preset days, and generating a second mechanical structure list.
5. The method for recommending mechanical structure information according to claim 1, wherein the extracting of the relevant attribute value list according to the mechanical structure attribute of each mechanical structure in the historical mechanical structure reference records of the user to be recommended and the similar user specifically comprises:
extracting mechanical structure attributes of all mechanical structures in historical mechanical structure reference records of the user to be recommended and the similar users within preset days; wherein the mechanical structure attribute comprises the following attribute items: color, material and size;
and counting the number of the mechanical structures corresponding to each type of attribute value according to the attribute value of each attribute item of each mechanical structure, extracting the attribute values of which the number is larger than a preset third threshold value, and generating the related attribute value list.
6. The method for recommending mechanical structure information according to claim 5, wherein the step of searching for the mechanical structure whose mechanical structure attribute meets a second preset condition in the preset mechanical structure information base according to the related attribute value list generates a third mechanical structure list, specifically:
and searching in the preset mechanical structure information base, wherein the mechanical structure attribute comprises mechanical structures of which the attribute values of at least M attribute items are in the related attribute value list, and generating a third mechanical structure list.
7. The method for recommending mechanical structure information according to claim 1, wherein a fourth mechanical structure list is generated by searching for a mechanical structure with the same type and the number of times of reference meeting a third preset condition in a preset mechanical structure information base according to the type of each mechanical structure in the historical mechanical structure reference record and the historical mechanical structure search record of the user to be recommended, and specifically:
and searching the previous W mechanical structures with the same type and the largest reference times in a preset mechanical structure information base according to the types of all the mechanical structures in the historical mechanical structure reference record and the historical mechanical structure search record of the user to be recommended within the preset number of days, and generating a fourth mechanical structure list.
8. The method for recommending mechanical structure information according to claim 1, wherein the generating a recommended list of mechanical structures according to the number of references of each mechanical structure in the first list of mechanical structures, the second list of mechanical structures, the third list of mechanical structures, and the fourth list of mechanical structures specifically comprises:
extracting the first E mechanical mechanisms with the largest number of times of reference in the fourth mechanical structure list to obtain a first mechanical structure recommendation sublist;
merging the first mechanical structure list, the second mechanical structure list and the third mechanical structure list to generate a fifth recommendation list, and then extracting the first T mechanical structures with the most reference times in the fifth recommendation list to obtain a second mechanical structure recommendation sub-list;
and generating the mechanical structure recommendation list according to the first mechanical structure recommendation sub-list and the second mechanical structure recommendation sub-list.
9. The recommendation method for mechanical structure information according to any of claims 1 to 8, wherein the mechanical structure information includes a mechanical structure name, a mechanical structure attribute, a mechanical structure type, and a mechanical structure diagram.
10. An apparatus for recommending mechanical structure information, comprising: the system comprises a data acquisition module, a first mechanical structure list generation module, a second mechanical structure list generation module, a third mechanical structure list generation module, a fourth mechanical structure list generation module and a recommendation module;
the data acquisition module is used for acquiring historical mechanical structure reference records and historical mechanical structure search records of the user to be recommended and similar users; the similar users are users of which the similarity with the user to be recommended reaches a first preset threshold;
the first mechanical structure list generating module is used for generating a first mechanical structure list according to the historical mechanical structure reference records and the historical mechanical structure search records of the similar users;
the second mechanical structure list generating module is used for searching the mechanical structures with the same type and the reference times meeting a first preset condition in a preset mechanical structure information base according to the types of all the mechanical structures in the historical mechanical structure reference records of the user to be recommended and the similar user, and generating a second mechanical structure list;
the third mechanical structure list generating module is used for extracting a related attribute value list according to the mechanical structure attributes of all mechanical structures in the historical mechanical structure reference records of the user to be recommended and the similar users; the mechanical structure attribute comprises a plurality of attribute items, and each attribute item corresponds to an attribute value; then, according to the related attribute value list, searching in the preset mechanical structure information base, and generating a third mechanical structure list by using the mechanical structure of which the mechanical structure attribute accords with a second preset condition;
the fourth mechanical structure list generating module is used for searching mechanical structures with the same type and the reference times meeting a third preset condition in a preset mechanical structure information base according to the type of each mechanical mechanism in the historical mechanical structure reference record and the historical mechanical structure search record of the user to be recommended, and generating a fourth mechanical structure list;
the recommending module is used for generating a mechanical structure recommending list according to the reference times of all mechanical structures in the first mechanical structure list, the second mechanical structure list, the third mechanical structure list and the fourth mechanical structure list, and then recommending the mechanical structure information of all the mechanical structures in the mechanical structure recommending list to the user to be recommended.
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