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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:- q, `/ x9 b* C. ?- q+ O0 E' d
to do-business
, i1 `: f& K$ `5 h# o rt random 360( W$ d% ?8 o6 Q" C2 R
fd 1" X( }& d$ y$ f. L3 m
ifelse(other turtles-here != nobody)[
* r2 N( Z/ |- M% \- R$ l( \   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题., E: i# p; [( k: {( y
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
; F# j, b( \$ e$ b   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer" z/ T: L8 F5 L5 D4 ]1 V/ D
   set [trade-record-one-len] of self length [trade-record-one] of self8 g7 N: @( p' x  O
   set trade-record-current( list (timer) (random money-upper-limit))* n+ G4 g1 Y2 @$ E2 s" [9 D
" A8 p6 G8 a0 d2 S/ f
问题的提示如下:7 x- _& d3 Y, f

$ k5 X& P% Y* h: Ferror while turtle 50 running OF in procedure DO-BUSINESS
/ ]0 q, n- X" [3 J. Y) I  called by procedure GO( S; m. r* a+ |3 W9 ?$ x/ C5 J
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
1 l6 l$ z9 a8 f
(halted running of go)
1 r: Y- N: N8 P# s5 U: m
, i' n; ?8 Y# j/ k$ z# ~2 v8 q这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~
  }' B; x9 T. H4 h0 k7 Q另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教( {/ R! s: M  Q9 s# j% P9 j  ]
globals[" X5 _8 V6 s! K1 V
xmax
5 f/ e5 B" A& R% b. O! r5 k7 Rymax
- h# P% F5 ^2 e( `' T- p# _- zglobal-reputation-list& ?7 w. o& I3 P( L) z4 Y! D
$ F, j: S/ {/ D7 B9 ^) y
;;
每一个turtle的全局声誉都存在此LIST
& E! H& h5 e# \7 ^" e' y) t3 n' scredibility-list6 ]" A" K9 |: ]
;;
每一个turtle的评价可信度
) L* t1 |8 U! F! o1 dhonest-service
3 \& H0 I% m: b8 }: }5 munhonest-service, a2 X$ J! x, j' S1 i/ {
oscillation7 x# f  {" k7 w* X; U7 [
rand-dynamic- q5 F. t6 r8 {6 _# a
]) P( I& z) f& g

! J" N; c  x& G5 g2 zturtles-own[
* q) l) D1 _; e8 N! }* xtrade-record-all
# L- T, g+ x4 `! d7 i: f;;a list of lists,
trade-record-one组成" I4 c7 t( g4 x
trade-record-one" [- p- i  H) s
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
/ E/ W: ~0 h5 b( }7 M3 G6 V, d; {* W8 N
;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]9 f/ }2 P' X8 r, O
trade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]
( {! o  r% T( G4 Pcredibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list3 [* w; l! l0 g- |2 Q# X  d8 u
neighbor-total- @5 X  \$ c& V5 e: O$ F. A
;;
记录该turtle的邻居节点的数目
. W& Z0 J, X# A* E- Strade-time6 Y* s' x- W& Y
;;
当前发生交易的turtle的交易时间
$ [. s; T% I+ ?! v" e5 Happraise-give: h5 v  i1 r$ y) g
;;
当前发生交易时给出的评价% C+ q' C5 g6 x4 n5 Y
appraise-receive
5 K# H9 K1 Q: u; `;;
当前发生交易时收到的评价" \- ]% U# D; @
appraise-time9 [& p. {$ i. x/ w7 p( w+ a, I
;;
当前发生交易时的评价时间
* k1 D2 j; |. _) zlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
1 ^3 r; ^7 z( y5 ]trade-times-total$ [+ i' P8 R: `: B5 a; m& |+ [
;;
与当前turtle的交易总次数
6 ?6 O# F. U! n& }8 d8 A$ F. _trade-money-total
# g8 n4 Y2 b, s3 |6 @7 m;;
与当前turtle的交易总金额
2 Y* _. E$ c+ @+ D5 N, h; _local-reputation& G3 G% L0 i, v' ?) F
global-reputation# ~$ ?6 E- P! M8 v' P
credibility
0 ~" w" @4 J3 N, g0 B" y! g;;
评价可信度,每次交易后都需要更新
5 t! V  j! r4 C3 ecredibility-all2 b9 a" F' T/ Y) y
;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据
  u$ L4 w7 Y6 A2 G% o7 n) w0 t# l* @0 V# j
;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5
5 |3 n* Z: r0 ucredibility-one$ x7 L: j6 e' d5 i' S  q; x
;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people
% R+ v' g* [$ L  Jglobal-proportion. l: ^! s/ x4 H7 T: f
customer. l) S1 P+ S; @1 N7 G
customer-no" q) |& u( ]2 B' ]
trust-ok" [# M1 F3 E# z) u
trade-record-one-len;;trade-record-one的长度" E( B5 z$ T; ?7 I3 m. C
]  E7 v2 W0 Q8 n# ^( ]3 d1 h
. U' O$ m/ }) d; n% s
;;setup procedure" w8 w* Q+ `  }: j' P- g
4 {" `, ^* e8 e# }; ?8 U
to setup! c$ L! o; J* T2 Z' n( P  Q
7 ?' V% b. U/ v1 o: ]/ L* v6 y
ca
% `5 c" M. i# F5 H3 w" d' q

, A- ]% E/ T5 q, }" l& Q( |initialize-settings

. n7 L7 v, r, V+ N( Z' b* x; W# M* `4 d& M7 @$ _
crt people [setup-turtles]
9 i4 T* f8 |3 L
4 |* o3 P! C8 a% H' P' g0 @
reset-timer

) l2 m+ }& k+ x
2 L) a; y5 \$ A1 [- j8 |poll-class

+ x7 A% K5 E) C3 O/ b8 Y
' D3 r8 Q  R2 \$ w$ Qsetup-plots
' P/ O$ t  Y% ]. q+ b" i

3 P6 E( R" S2 b; ~) T/ Z3 Vdo-plots
9 x* E, c# e8 h$ Y4 t
end1 O9 \' E8 V( w
+ K& i% \8 W" s! b+ X
to initialize-settings+ g+ P4 t9 H" ?
* X) M' _% p8 l) |5 X: {/ j7 |
set global-reputation-list []
: O, ]5 E: ^3 c" y5 H

0 Y8 `8 v) f( D" {8 b2 l- ~5 U3 D$ r' qset credibility-list n-values people [0.5]

) G9 V( p& m: O0 U, Q% B+ h
7 k7 }* t9 q% eset honest-service 0
, q1 N* X8 G+ W

2 f2 K; {+ t+ G# E7 i8 {* Uset unhonest-service 0
5 e# Q% G" Q5 e! G8 f

4 {" {+ N: h, f. hset oscillation 0
+ q1 ^( {. f( m6 T+ s
7 S2 A6 E: E- W* w% M
set rand-dynamic 0
* q/ A* C3 J. x' [  o, V1 ?! W4 z
end0 P6 P. B  N, A( i& u
2 D% a! }" Y' R3 H0 J
to setup-turtles
" A' e& F9 N+ @# S  tset shape "person"  P+ j  _2 a% Y
setxy random-xcor random-ycor
6 b8 j- D( }  Q4 Z' Uset trade-record-one []
" {' B9 o7 E/ U5 K% r4 V
' X3 |8 L1 z. a9 ~0 \9 I
set trade-record-all n-values people [(list (? + 1) 0 0)]
& c* t8 K' w% @
7 k$ a# t/ }1 |/ E9 s
set trade-record-current []
" }! K6 n/ w. M; ~. r0 e. `+ oset credibility-receive []
0 N" q: F5 l) Y% z) P# S2 Fset local-reputation 0.5" c, H0 [2 e0 \: {9 y* N- ~4 m
set neighbor-total 08 g6 Z: R- u6 ?8 L. v1 k+ O2 {
set trade-times-total 0
# l8 T' |; P& l( }5 ^; q7 K/ Nset trade-money-total 09 L  {5 I" J# v* _; j
set customer nobody
8 Z8 K  Z  o6 J. F5 J" kset credibility-all n-values people [creat-credibility]
  V( c7 Z% S- N; j) a4 N9 \set credibility n-values people [-1]8 R; ~1 A$ ~+ D3 l( x$ u
get-color: [, @. ^6 Z' V  O
. ]4 K5 s/ }. v! r- g  n# b
end9 r$ y# _& m5 O, @( g+ q
# [/ h+ g/ W8 D* e/ ^
to-report creat-credibility& e) ?% `- P0 H- |$ o
report n-values people [0.5]
5 k# h' q, u6 Z# s, oend
1 y4 V+ o! b( x% ]/ H- G6 n" x$ \+ K8 T% z+ a/ ], }3 d  @# {
to setup-plots
6 S9 `% P! N& [- b3 ~9 d- P" `& x& I/ A9 @8 [& i0 Q- ]2 }! @
set xmax 30

7 g. }- X# x! r3 N" f1 _8 M6 x
! l8 I! D( @) }( C: d  ~set ymax 1.0

" A3 R) _$ u% @5 G/ k2 c6 @- j2 A1 V9 I* u4 S& X- w7 A' S
clear-all-plots

, B7 _3 H' f' Y5 v( U1 y# ~2 M( S2 h! t. D) [
setup-plot1

/ S9 R3 E5 z! d8 S$ ?  N
5 E( Z- z& m. }  P/ K$ Q7 _' msetup-plot2

2 D/ n+ O: Z* Z; T4 ~7 j6 B3 k
4 j. C& X5 Q0 u7 m0 O1 }- psetup-plot3

6 k+ Z$ b# F: L' _8 M" `  gend
/ \% z5 x4 }, g# T3 |/ N1 j9 n0 z2 L/ i: s. J- l
;;run time procedures
: a2 S- @6 I( F" _, M' Z* P
/ D2 U5 t5 Q9 r6 e/ `! j$ Wto go  f$ U" r" P5 x% ?
" y4 ~0 E4 S9 H# }6 B6 E1 Z( |
ask turtles [do-business]

" ^, i$ @+ {0 `/ R* Send
( O+ z" d4 v. y. G5 O# e, I; J  @$ N$ y% D! K6 V
to do-business
- I2 L1 g/ ~8 e8 y" M
) o! I0 M4 t& _

& g( I$ A% v) ]/ y# h8 j" jrt random 360

( M$ M# H! i/ F/ @: {- _6 g1 @8 V- Z# Q6 L% {9 N8 Z
fd 1
4 ~0 D1 T) O" c  `2 ?3 B
7 [" u, P0 I7 s# i- U
ifelse(other turtles-here != nobody)[

  `# c$ p1 \/ V* _
4 S" z3 p' m1 P5 p* O6 iset customer one-of other turtles-here

( M) a5 r) Q0 w: o
# X0 P8 a  H4 s;; set [customer] of customer myself
. G: a& J  V6 N( o8 {
! M: h6 A3 n0 o( K+ T
set [trade-record-one] of self item (([who] of customer) - 1)
- v2 R5 D1 E* K9 N& }3 }! |! {[trade-record-all]of self8 v7 V& ~! W) @7 C  \
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
2 i6 n3 v/ X2 ~( |. f3 R

" o$ S0 ]# ?: B0 v5 |set [trade-record-one] of customer item (([who] of self) - 1)
" F2 L* W' X4 v. M( _/ X[trade-record-all]of customer

4 N2 ?' g( U7 o$ V
- z5 Q! K5 U# t$ Z' Yset [trade-record-one-len] of self length [trade-record-one] of self
9 }, {  |7 n9 |
) P. N8 ~: o  `" X
set trade-record-current( list (timer) (random money-upper-limit))
1 L4 D# S# P+ q- y3 U

3 {" ?9 g8 f" W6 C- x2 [ask self [do-trust]
" E3 T9 K8 B* X) x% P8 _! k7 j;;
先求ij的信任度
5 f) g, h5 @, l6 S; ]
  p% D9 \$ @; @: r3 I, K! hif ([trust-ok] of self)6 R& L6 S0 W) Z; v8 g4 c
;;
根据ij的信任度来决定是否与j进行交易[
8 Q1 ~. V$ z' L4 h! Aask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
9 y$ A6 P( y' B! y) E# h
2 Q# Y' y, v1 w6 }+ ~[

$ z$ e( y* l# H7 t5 _8 a7 `2 C* U6 B. ?" i- ^
do-trade
% l( e' y, v% L) Q5 W; O# {* [

$ h4 m: |$ o) j) rupdate-credibility-ijl

( y: u" o3 V! S" u' i' T1 y) W) `' Q& S  I3 e# W# ?4 [/ O
update-credibility-list- ~7 D/ h1 G# i# k  j
+ \4 G2 c- h2 [; {8 J; J* ^9 |
6 ^8 _2 q' q% ~1 j! C  E- T
update-global-reputation-list

6 V$ D# r% F8 O. t
2 D. p% {+ L: c  Ppoll-class
# K3 o  G  I' ?) ?, e

+ P- X- Q3 T1 A% A" ^get-color

( h* a- b2 m1 x( |# [- u& B) J. f; f; K0 I) i0 w% c
]]! z, v# X& X; a9 A  G; X  R

2 \% R9 b9 j3 o: H1 j% L;;
如果所得的信任度满足条件,则进行交易
' ^* h0 Q# d; I, Q4 N' N8 r9 p5 I; y
/ ~8 F( p4 F% Z+ R[

3 s* K& N3 Q! L: ~# T+ o0 Y# r2 s! b5 {' r( n' O) w- j7 w+ t
rt random 360

8 w7 N# j, w, L
6 z/ u  J- Q9 qfd 1

* U( r& _: b3 D4 U# ^
/ `0 [$ W5 b- D]
' z: o$ H. Z, n% d7 l* A/ W) c
$ R" B/ E2 _5 f- z: z
end
: \1 k$ `6 d: s7 i$ T: h
7 Y9 q- Y! p; M: t" G
to do-trust 3 T5 Q9 p4 Q! r- J! C
set trust-ok False& g! W9 H: y( z) K7 {$ T

( i. t. I1 I# r1 d" O4 p) t  M

' u- O! _$ j7 }let max-trade-times 0- m1 h2 j$ ~% L5 {+ G
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]: K& Y, Z4 H# i% v  d1 D( U% \
let max-trade-money 0
# z% R; c) d* n0 Vforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
" ]8 {5 W! N. E7 b1 n6 t8 m, vlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))* w5 a. ~* o" s# t! R

: s% y  K6 u. A/ E( _; ^" l& u
8 c9 S* U  z' e3 M9 `# I: y
get-global-proportion, b. g- b& v3 K9 q. l& B: I
let trust-value
" t7 ?/ T( O/ V8 N) ~local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

" Z5 X3 R: b( n8 r; s3 p0 @1 p: W0 Mif(trust-value > trade-trust-value)
6 ~. g( |$ S0 V$ K0 W[set trust-ok true]
. k# e8 m1 D- y: u& wend
) f" @4 q* x8 |3 |) E; G3 @- Q- a4 I3 M1 [6 x
to get-global-proportion
8 y4 I/ h: r1 V( aifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3); g; q& n$ y0 y9 E# L+ c
[set global-proportion 0]
( c8 v6 Y* [. f3 J" T( u4 y3 n) J  U) w[let i 0
4 {* J3 u1 c' {, ]let sum-money 0: A- F5 l4 l- j% l, J/ K, ?& x
while[ i < people]
; Z% X9 \, r# M1 p: S[
+ _* _8 l5 D% ]: z& nif( length (item i
- Y% E4 W% L" N( k" g- n7 z1 }[trade-record-all] of customer) > 3 )
- }* i9 {% K) W, N: v
[' v$ T  {8 u  Y5 }+ Y5 F# j
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))8 r3 h5 k& u" B# w8 h
]
9 `9 ^: ~6 ?0 d% B0 R" G' ~]) j5 d$ ~8 \4 G
let j 0( y9 S7 \5 I, l3 k7 _/ V
let note 08 |% ^7 q% T3 c
while[ j < people]
/ `2 E5 g: A# e[. {4 ?- i2 Z) d' m
if( length (item i- _1 \1 z  i: {+ ~1 a' |
[trade-record-all] of customer) > 3 )
, w# u4 k8 J& J$ O* b
[
4 x3 i* e5 `5 j5 |ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
  D8 e, R: U# |# J[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
, R* v$ U' K4 D7 Z8 k- Y+ s[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]$ ?9 z! [: `) l% p  y
]
; V6 L6 Z9 h" d9 M: M% q]
; C! G0 a8 H1 M! s3 i1 ?set global-proportion note
& ^% q0 n2 G& z3 c' D( r]% F$ k5 _- o  B% R9 H! }8 _) Q( l
end! l! i  M/ P+ T, X7 Z& l

( h: e( h# A% |  j, Xto do-trade
# Q, H7 p: I" m# U* g5 \;;
这个过程实际上是给双方作出评价的过程4 ?; Z8 d0 ?; N+ H
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价9 P7 j" U! ]0 o9 v
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价& {: U9 x0 H' V- g
set trade-record-current lput(timer) trade-record-current
: N% d+ M: v2 C$ v6 U: J" M& k* ^;;
评价时间# I& \0 i8 `8 V- r  [! N! G; L0 x
ask myself [
9 O1 R* u- ^/ b, |" o- fupdate-local-reputation
8 D8 y( ?! \2 R' m4 a  ?set trade-record-current lput([local-reputation] of myself) trade-record-current( ^  {5 r5 x7 h+ q6 `; S% B6 T4 ^& n
]+ l' L( E$ @; F' j  m- q8 R
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself* {7 h' b1 y; Z2 v: l
;;
将此次交易的记录加入到trade-record-one
! r8 x8 b2 C4 l  C) m: t  Z2 C2 ~set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)& \* \9 d- d# C8 t$ F: i+ J8 W
let note (item 2 trade-record-current )6 b, a$ n8 \. C# n
set trade-record-current8 [0 m9 f% x* o5 V8 T3 N0 o
(replace-item 2 trade-record-current (item 3 trade-record-current))

% p* x8 S5 H& x. |/ J& Aset trade-record-current$ I/ t" Y: S0 E, m
(replace-item 3 trade-record-current note)& n8 @8 |4 U# I% O6 t' j

( }* y; y$ T/ e, R- A

% H8 V( W4 e. E, Sask customer [4 a& Z  C' C6 T& }3 Z" h
update-local-reputation' Y  g/ n* D# x" @* R) y! A- D
set trade-record-current5 Y6 `9 I# x4 d
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
2 ~5 G0 X* Z6 M: f
]
! w0 v1 M3 w" H% I1 v% {
) W# M6 b+ s) \8 h* I" I' C
, u# z3 R/ M1 f7 r
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer  H+ q/ l, M$ j! ~( ^( Q# O3 b
1 V* i. D: Z" {1 H9 P* W
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
1 d# W5 V6 M5 B5 p6 B;;
将此次交易的记录加入到customertrade-record-all
6 f% H7 M! K5 ^8 _+ kend
; [' y. U  A3 \
' E- W7 a' O3 r; S% ]2 Kto update-local-reputation
& U" W) O2 _: F2 hset [trade-record-one-len] of myself length [trade-record-one] of myself
& V0 @! l( m# R9 c5 [! z& U# l! W7 ^( m  V' Y

/ K* ^$ t7 x& H% {) S4 h$ {+ T2 E: };;if [trade-record-one-len] of myself > 3

  |+ q' C4 i9 o( J1 Uupdate-neighbor-total& s6 l' {* j# H
;;
更新邻居节点的数目,在此进行
2 b( V1 r3 d9 l9 R- v- Z' wlet i 36 n* q" H% G: O" L
let sum-time 0
2 J6 D1 H* N$ d: x) g" h5 Jwhile[i < [trade-record-one-len] of myself]. g: I4 \, ^, H
[0 m  m) U2 q( \9 n' M' j1 g
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
* A* B3 l8 Y! ^2 P$ \3 ?- Sset i
4 k) ^% Z( M+ G$ G4 X& g( i + 1)
* M2 \2 t" x2 Y, P5 C& Q
]7 [% V) e: t7 A6 l6 t
let j 3
4 ^" s; F2 i8 }" n( t5 r5 y# ]* J& Ylet sum-money 0& N8 k6 |) u4 D+ _3 U- s. T
while[j < [trade-record-one-len] of myself]5 t' w: i6 U) S( C+ z
[$ Q% g# ~; y/ I3 T. o9 y+ g
set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)$ p) X$ G7 B" \) y- \* X
set j
* D# p/ `5 R$ I: Z5 m2 A+ l( j + 1)
+ L9 Y- v3 t  A1 ?* C1 O
]/ m  l: ?+ t+ i0 r+ [
let k 3
2 A: b  {' u; }7 Z  s0 g* Ylet power 09 U' r) Q7 ^+ o0 G- }
let local 0
& O4 K( `! r. R) B3 Swhile [k <[trade-record-one-len] of myself]  r2 S3 V* f2 J' s+ J! R6 I
[
/ |+ l) j- }% F3 j+ n: \  C7 Qset local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money)
4 v$ P1 @4 g5 a: ^set k (k + 1)8 {0 W" E4 l4 Z1 ^
]1 y" z0 [, {% Z0 k1 u6 G/ \! A9 }
set [local-reputation] of myself (local)( ^0 K$ Z8 z$ {
end$ b7 D; x) f. F1 q0 i4 W: P
0 C* K3 z* @' ?" L
to update-neighbor-total
/ ]# ~8 ?/ t0 j! u
, P9 R' x& k& o% \if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]0 u! [  n! w" b
) N$ G+ i8 b6 C1 I1 \; w
. K! v" E% @) q' x, i. X; w( g
end
/ Q( w/ J0 [" H: X0 e& P; P9 R$ y% ~- z/ o9 z( c) p
to update-credibility-ijl * u* }! v8 b; j$ O7 c! R

0 H) |* R8 R& `0 Y3 |;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。( I$ H6 n# A- S6 C: W2 _4 k
let l 0. a$ g1 f3 l3 [2 E
while[ l < people ]0 i1 F) f3 ]1 X
;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价* g  `1 Q( E# A5 ]8 Q) \6 I5 W
[
# P8 w6 J. L" hlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
3 E" B& O# \, {" P- Lif (trade-record-one-j-l-len > 3)
8 g1 N$ G# `9 k2 S6 c% l[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one
( o% k; T$ S% ^! |3 z0 ^let i 3
4 G# v" U* k  d" Ilet sum-time 0
% t% S5 h* A8 c# b5 Pwhile[i < trade-record-one-len]
  C7 b5 J; I* v' }6 y& X3 U- ]2 l[; ^- H6 M+ d1 U9 H) w2 ~5 B
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )/ t0 Y" ?3 W* `/ Z; h% M
set i
5 `; ]" ~8 }. I. E* a( i + 1)

0 o! J0 ]# F& q9 v: k/ f/ W- t]
# h( x2 \9 K3 B# B& Q! v6 Zlet credibility-i-j-l 0; }2 `, Z! T% A( G4 I
;;i
评价(jjl的评价)- T- n) J0 T: ?/ `' C: ~% b
let j 3& Z+ T# H1 \2 Y  p8 X+ g) D/ u$ O
let k 4- B0 K4 p8 L0 Y5 X+ p
while[j < trade-record-one-len]
* V* a" K: {7 \$ J[1 T6 W9 I9 ?" x; o$ }
while [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉
' ?/ I  V% p( f0 T* A, r( xset credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)
, F7 _4 K# m" N( O9 Fset j$ C+ B4 |: F+ H$ Y
( j + 1)
1 h1 R: i8 H' a3 c3 m2 R
]
  n/ Y3 B+ D$ dset [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))
) [1 h9 S7 F1 y+ j. F; M  b5 Z. M# R! W* H

% a" \+ ^& Y  i: H& glet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))( I( d. ?- M! l' U; M& m: d& H
;;
及时更新il的评价质量的评价
! K+ R2 ?) w: Bset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]: i: h+ n: I) k8 P
set l (l + 1)3 n5 b, c9 `+ P* ]0 C: v6 s# P
]5 Q  Q8 J! b4 A: E/ R/ n, E
end* q+ H5 `9 h8 h! l

: [- ?8 V4 O2 B4 qto update-credibility-list  h$ F+ y' k! d( E# F3 ]4 T
let i 0' z6 W4 N7 O  [, c& _& r- {
while[i < people]
9 T; z8 v7 h6 s. m[7 K/ E, j, M& A
let j 0
% Q! A6 n5 b. f7 _# j/ Jlet note 0) W8 }% V: P: F5 O7 E  p
let k 0
+ j  |: Z, k. E$ c$ l3 A: J;;
计作出过评价的邻居节点的数目
) |2 o2 }5 q3 W) ]while[j < people]; P1 X$ E4 G- e  h; s
[4 L1 W+ h9 l  ^6 X+ t# Z' Z
if (item j( [credibility] of turtle (i + 1)) != -1)  J" O7 h- ]% i* k
;;
判断是否给本turtle的评价质量做出过评价的节点
5 _6 C* k( }1 R! T& W: N# p4 n[set note (note + item j ([credibility]of turtle (i + 1)))# _" o, O  N+ O$ ~
;;*(exp (-(people - 2)))/(people - 2))]

' M6 I$ B; y1 rset k (k + 1)( e6 j, i2 A0 Z) w
]
% M2 O8 \( M6 m; Q2 Cset j (j + 1)
  X" v0 o- r" w1 U! e]
; e, Z$ L( X$ H4 Sset note (note *(exp (- (1 / k)))/ k)& z, @% n! {5 g; z9 C  Z2 Q8 E
set credibility-list (replace-item i credibility-list note)
/ s! Z4 m! _% g, Mset i (i + 1)
( c! }& p: Y! c. X]$ P5 I$ D! f; l/ z( E" u
end$ l' E" B1 Y$ ]

  b: i. O* Y6 M" U( a5 V. z5 O4 Eto update-global-reputation-list4 o3 {( _) a7 Z' o
let j 0
( W, W1 d5 D7 v  M" A: x% Ywhile[j < people]
( L7 r- S# N, R[/ Z, h" K) G+ `) l. A
let new 0
0 A, h" o4 C' \: h5 T# B$ U;;
暂存新的一个全局声誉  Z1 ^* @0 E5 I# \- D
let i 0: M! M$ n; s6 P' A
let sum-money 0/ u' `9 r! U% E7 _5 C
let credibility-money 0
1 [2 x7 }) s  r* bwhile [i < people]" v4 F: S" e4 Q  |, |; M. l
[
4 x. u0 p9 m9 c+ nset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))% Q! j; z: }  J; c+ C
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))& W" v6 M: b/ P' ~, x8 ~
set i (i + 1)) _4 n( c, ^- p2 V- |
]
8 n" B& E( B- D0 D0 l+ L, m9 Ilet k 0' j! F7 m$ V, [: b, d5 \
let new1 0
( G# Q" U/ e9 D# {0 s  R8 F: s3 Gwhile [k < people]
& a0 P2 h9 W  l+ `* t7 |[  ^- u' q+ c% _, E0 [( p
set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)& K# Q+ n) k- J% K  T9 a
set k (k + 1)
" y/ M3 b8 g) t0 T# E: Z]
1 M! C% M- E  ]8 t) C' Hset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) + ~1 g* ]* j$ |$ p! e$ A
set global-reputation-list (replace-item j global-reputation-list new)2 z7 L$ K5 g: _7 q! w  Q( D* ~. f
set j (j + 1)* \: c; j* t% k# E, A6 Q7 C
]/ z2 g" d. X2 h
end6 g5 h0 J, \# y& h

: \9 m+ v, ^% r( ^1 j5 F# g* J, @3 C1 G) y) x, E
) o( p) e& u0 n5 [9 r8 e- F0 \2 \
to get-color
) R5 ~- q, Z1 {1 [8 i+ R# r) G6 ~" p. k8 m3 r2 O
set color blue

+ h* ~" i( i7 Hend
! A$ ]9 o3 s# R
0 k; i+ @) q% K, K5 {8 V% O2 e# mto poll-class
7 D$ u9 H) [) }3 e+ L. }end9 I; u( a3 y. c/ `

0 A7 j8 ~# U9 n$ T$ }! F' r: F; Oto setup-plot1) R5 ^+ Q) f3 K( W4 R+ v5 I! S

" A9 v& O. }5 P+ ?* a7 Wset-current-plot "Trends-of-Local-reputation"

. ]. s% P" ^4 n5 g: P7 |# G9 s
! A, t4 k* v+ Sset-plot-x-range 0 xmax
) M. Q7 Z/ o( ^* e; X

0 q2 E$ P" O3 P  ~set-plot-y-range 0.0 ymax

- Z! q, F( _) d# j5 dend7 S# Y0 [3 i7 V' ^( ^) {

' |) D9 n! Q0 a0 `, Lto setup-plot2% n; O7 I1 `3 x; Q

. e  |; P% q7 Q+ i& Mset-current-plot "Trends-of-global-reputation"
2 p/ D3 A9 Y! [, \) j7 X

4 L) b- X- ]) C$ K. {set-plot-x-range 0 xmax

4 I$ t5 u8 A: T: @$ P! K! W3 C" p8 D! ^5 Q2 }
set-plot-y-range 0.0 ymax

  ?9 i5 f- i+ wend) `6 J! ~$ ?. [$ d' r
: S4 I* b, y( z0 B
to setup-plot3$ z% Y5 N" v  R. b% R
+ G" }- e: \7 H
set-current-plot "Trends-of-credibility"
3 Z+ `% K  m! C, e

! F, [; T9 U+ ^$ s/ Yset-plot-x-range 0 xmax

) O2 T  P4 Q  u4 m* a. g& [
* P0 O0 E6 x9 j" ^$ R# C" sset-plot-y-range 0.0 ymax
& B$ F+ p- M0 ]% h$ b" O& v
end
* t* q  n$ f3 X6 w
. I" o- I  x- }to do-plots
! A  L" J+ \& xset-current-plot "Trends-of-Local-reputation"
" E# _- r7 p/ m" X! u9 c) F6 Eset-current-plot-pen "Honest service"; H; \( i4 O) l
end
2 c' I' m: ~9 m. ]% F$ K. u+ a; @; a, x& U# N
[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.
0 y# h  ?8 {" J9 A  L! T
) T+ s) [, e! S. s这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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