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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:
6 K( }2 X+ z" J& v- N( Zto do-business ' E0 K) v3 G( p
rt random 360! k& W2 i2 ~# K2 y8 @2 @
fd 1- W8 I& J# r( P
ifelse(other turtles-here != nobody)[
0 b6 N" C, M' Z+ e7 V3 t   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.
5 p1 b# w( s$ d% F: u) F   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    , a' P4 K, t* T* g# {/ E: Y$ ^4 w* J0 k
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer5 \' f' C* a1 ]9 v) A& F
   set [trade-record-one-len] of self length [trade-record-one] of self
& _) \% k- A( b* y. y; }   set trade-record-current( list (timer) (random money-upper-limit))+ y; S; e$ `. [. Q7 }5 _% i! E0 o

0 `- q* P! O! Z3 ^" x6 Y& W问题的提示如下:
' w8 v2 {8 F" W# o  p2 \2 l0 m, l) x
2 R6 v" l1 p+ e) `/ l8 l1 Eerror while turtle 50 running OF in procedure DO-BUSINESS
2 e/ B2 L& t6 j) X/ n' L. s  called by procedure GO3 P! P5 f: @" h1 P0 A4 W
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
; k  X1 g9 a7 j* A$ v4 b. V) r
(halted running of go)2 h$ Z5 @3 N. F4 E) C  B

/ B/ \: \0 V, X! Z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~~, j9 x  M+ |. [. i' 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
  G4 [; I: r/ Q; D2 uglobals[5 o+ f3 W& l3 Q" _$ y& \
xmax
' J( H: S5 R/ S5 E+ Tymax9 G( w! f( W& {/ {* f) X
global-reputation-list6 v: f- X; l  y% t3 k8 {

! r) ]: e& h/ D1 [: o- C2 I. x;;
每一个turtle的全局声誉都存在此LIST6 C# d: D5 _0 Z3 `' ?
credibility-list
9 c* h5 G+ P% N5 c;;
每一个turtle的评价可信度9 t) s( z. g' Q
honest-service
% ~& S+ y9 Z3 Y# S3 a* Sunhonest-service
+ L0 W2 b: c7 X2 C  `2 c& k% foscillation
, ]0 B8 ~: a5 V- I9 crand-dynamic
  j* A0 _; I1 v6 N7 i" r]% E( J# k& b% i  q

! e" P" U: m1 ^. ?+ _8 Xturtles-own[
& j- H+ c5 t; Mtrade-record-all
9 S- M6 z: y/ k8 ~8 };;a list of lists,
trade-record-one组成
$ v- S' ~+ X$ L# @# D$ Q& {trade-record-one; j2 J, l* R& P0 o
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录1 M$ L3 G8 {* @8 X/ J- D
2 P+ ?& Z2 M  C  f, v8 [  R
;;[
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]]
1 B% Z0 d$ G! S4 btrade-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]. T2 D4 G4 E0 C' z" }
credibility-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list
5 t7 X% M9 i# Uneighbor-total
& H5 n, B! L; _/ R# L2 `& G;;
记录该turtle的邻居节点的数目+ {4 ^3 a, S" N& D8 Y. N% u; r
trade-time) b3 O; I% w5 o  O/ L6 [
;;
当前发生交易的turtle的交易时间0 z9 V' i4 k+ A+ H9 q  ?8 K/ w
appraise-give
" T* u; w% I6 {, S  L. K;;
当前发生交易时给出的评价: j7 ]: a9 D5 Q9 ]  l
appraise-receive
7 {' K+ {9 \+ S4 T3 P;;
当前发生交易时收到的评价, s/ R4 ]2 V7 q$ a: s
appraise-time
: r5 W( C* }+ d;;
当前发生交易时的评价时间
; V" r' A# f9 p$ `3 i$ q6 \3 Dlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
# R6 t. b4 `5 C" Etrade-times-total
* K. u) s! ^6 g. s;;
与当前turtle的交易总次数. l3 {6 e, c$ n4 y/ N, \2 q
trade-money-total
# k5 Q1 u: r! h, @- ];;
与当前turtle的交易总金额& P  f4 F4 ^5 g! a: ?8 K
local-reputation- g; L4 {. `1 c# g" X7 k0 V& L; K  S' W
global-reputation. m8 \4 ^5 @) Y9 p8 T$ l
credibility$ v& }3 x! k* B! h
;;
评价可信度,每次交易后都需要更新' @7 L- Z+ q& w$ M6 \4 Q
credibility-all" [: k& \+ a/ c/ z: J4 P
;;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
& F. ~! U( W8 a3 q/ g
2 q  e& o- |1 E6 V! ]3 G$ u;;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
* @& p9 t* q% `. K' F* g" A8 Z% Mcredibility-one" E. w& W3 e" @/ s0 i) Q9 y, L8 {
;;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
9 d: f" Z3 o: y5 H# ]' m- mglobal-proportion( I9 P4 R. }" ~" g# V
customer
9 R5 G, [  M& H; gcustomer-no
. }  x0 V4 v# V  V; Ftrust-ok0 A/ Z& f+ H+ y* q7 e
trade-record-one-len;;trade-record-one的长度+ E. s: F0 g; B* R6 ^
]
0 j& @/ C2 X' i( f0 I8 A: c! V9 N+ B
;;setup procedure
/ ^' N. ]$ Z- R: x# n$ l! G0 f, N7 ?: |5 I* W  X8 U
to setup
7 c% x7 L$ Q) X4 T8 D2 O
5 K" o% V% i& ?  |ca

; N8 S3 P; \/ g& t7 J. W4 ~- H6 v' B( A6 l, w6 m7 p  {; u" K
initialize-settings
# l( o! ~) J% p4 ?! u+ q' C% r
  O0 m* H9 }) p0 M% b2 M
crt people [setup-turtles]

& t2 \5 t- Y3 Y5 D
4 T! p- p& P( b3 Hreset-timer
# t; p1 k7 c! m# h  i" m! ^
0 ~( C1 ^! V" W4 \/ @" _* a
poll-class

, \% p) r, S6 w7 h. e
% a& s9 M& z( X; Isetup-plots

* h5 d$ j9 a/ o+ e6 X+ @! s1 t: G/ p3 j0 b9 t" U4 @" a5 b+ w7 g
do-plots
/ I+ k$ Y1 ^- X
end& y4 v& |* Q) ]5 O) h

5 {- y1 w$ I. R6 e% L) t" P( dto initialize-settings
  V7 N+ Z( p) P, O1 e+ V9 C. x3 z( R7 {* o1 y  B# g- J5 [
set global-reputation-list []

8 c8 ?. p( s) c; ?1 e; G8 C$ i$ d" X' W; J
set credibility-list n-values people [0.5]

4 S) y1 ?% K. |; W$ f! A. r+ y, K: M
set honest-service 0
3 K  p5 {4 n& Q" P* M( ^* J9 c5 x6 K0 B

5 Q$ n( _* e5 h" W# X  u) X, Rset unhonest-service 0
  \2 t: S2 b/ C$ O
0 {& q. |5 E/ ?
set oscillation 0
5 |  e9 D6 m0 z" [! C5 I0 W! r& O
" f! p3 t0 m+ c' q: Y5 E" N0 j# B
set rand-dynamic 0
, y! H' ?9 x0 a& }+ t, i" K4 D
end
% X9 r! P1 `$ f1 a) e- j8 s# k! B: I0 ^) X& T
to setup-turtles
. v) \) g, N/ T( G2 B) g7 n: Nset shape "person"
3 P6 j' ], @+ l2 Zsetxy random-xcor random-ycor
9 T3 Z( B# `+ j. p/ d% V0 n& u+ Gset trade-record-one []3 I" ?" `) W! N
7 C, F$ V+ d1 J4 U# d# `- v; p
set trade-record-all n-values people [(list (? + 1) 0 0)]
9 _. n, Z* N% }1 w0 D; Z4 L! ]
: p. c7 r* p. u' e0 V: |5 O
set trade-record-current []
7 K. l1 c  N  j. j" `  N: p  \6 {5 fset credibility-receive []4 e$ U5 U, N0 p0 P6 F# k
set local-reputation 0.5; L+ A# l- y5 I
set neighbor-total 01 ?" m+ Y# j' B
set trade-times-total 0
1 ~& l/ w5 o+ A: F9 Tset trade-money-total 0
9 Z, \: h8 }" T9 jset customer nobody5 x9 t: I' i; N5 }; E
set credibility-all n-values people [creat-credibility]
5 T3 ]: v, V  m- }. Tset credibility n-values people [-1]; v0 v$ }( R7 J4 h
get-color
* |( ^1 q0 E7 P2 ~
) Y! [: Q. I$ o& i2 s
end
' ^: Z1 f3 i: s# Q9 n
( H; D8 m6 T' n  b$ G2 @to-report creat-credibility9 e& I/ v3 U8 s; {7 ^: F: L% s9 `
report n-values people [0.5], D/ c' ~* m7 @2 R( [
end
# C$ h  G' H6 d2 O4 g! ]3 T" H4 e/ M; \
to setup-plots
9 X" F7 v$ u6 L% @
+ a+ K9 U& T  Sset xmax 30

! {! X: @  r8 d* u# \. g7 o: [2 Z+ w
set ymax 1.0

. o8 U- m) a; {8 |. A7 O* d0 }' c# k2 J* S: l/ |
clear-all-plots

& ?! d9 I/ [) T) }! h5 B7 K5 A. g' c; v
setup-plot1
) d) W# z$ H/ K7 B: m: ~+ }: j
' ~: e3 Y, H4 U- ?6 ?# V+ F
setup-plot2

: s) u) x7 ?( ]& c! E6 _
5 W$ ^1 F2 k7 P1 }  S9 esetup-plot3
6 A% W( n  Q% P  ^
end
9 x9 p6 |1 u0 r$ Y9 \+ m
% k- D9 T/ M$ V9 U6 G" z, `5 E;;run time procedures2 i: V8 l# v4 _  c# i/ B  Z
9 x' P3 W3 u& x
to go3 @# t: Z' N3 z/ i
* G5 h( C! u: `, v
ask turtles [do-business]

5 D+ S5 u4 ]  u3 p7 iend8 o4 v& ?% n( ~9 F$ y! j

& f4 C5 W* K6 F$ Fto do-business 0 h1 g4 Q1 b1 H0 h9 z" X/ H) S7 T
1 j! l+ A) z( n' f: E9 h
! K$ i& A; p, j8 x
rt random 360
7 q0 n# r+ E8 Y# c8 {' O9 H

' P6 A+ V7 P  W4 s4 g% G$ k1 Ofd 1
5 b5 N' l/ K: \, t9 n

. q- ?/ T. s% M% k1 nifelse(other turtles-here != nobody)[
$ e; C4 Q9 C7 L- h
5 w* c; F2 m. O1 ]; C: r4 g, R
set customer one-of other turtles-here
1 h; A6 z/ b* i' g" U/ Z/ g( Q9 A  V

+ P/ b  A+ T6 N9 B6 P;; set [customer] of customer myself
' w' K: Y, T3 I; o

! r8 s( l1 g& uset [trade-record-one] of self item (([who] of customer) - 1)
; E3 ?% `3 }+ [1 g) A& u[trade-record-all]of self
& L+ y% A* v( N" E( A. B;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
" z2 h5 Q; X0 f% C

) ?  g6 E/ e* y0 @7 Y( ?( l3 l2 F, Bset [trade-record-one] of customer item (([who] of self) - 1)
" a: ?1 v* Q6 }' j) t[trade-record-all]of customer

8 N# Y) L% W# r. n+ \* {- O
, F" B+ b1 y( g, pset [trade-record-one-len] of self length [trade-record-one] of self
+ b) `$ ]4 t* l% F  ~( f
7 |+ z% T" j' |/ z$ _( {
set trade-record-current( list (timer) (random money-upper-limit))

+ M6 D1 I- I* n8 y1 ]1 y, q; U- w8 ^2 _8 G' O: L; I7 B
ask self [do-trust]6 n( W) Y, W! X$ r" o
;;
先求ij的信任度
3 m3 t1 p3 H4 p  Z
* F$ ^5 U  D! p4 R6 v5 H( f4 sif ([trust-ok] of self): c: b2 H  G! P
;;
根据ij的信任度来决定是否与j进行交易[
1 M  j. ^. C2 b3 Bask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
2 j. e6 D/ `! ~$ D9 n) k5 t. N
3 c$ I# z) o' {! s& ?8 B[

$ Q6 I1 I5 v1 s1 u- O. T. Q) d5 p  S) x' o# j
do-trade
2 Z3 k4 _- M0 J" N5 M& V

' b: Q6 K% U5 Zupdate-credibility-ijl
$ W+ A' ~6 Z; N

/ Q# l$ @! z9 L- zupdate-credibility-list
( E( q7 K; v' m& a4 {" K( ~; x, H

8 g0 M3 L% g7 v. C! Z7 c1 G0 R1 X6 o! W
update-global-reputation-list
) R* s& V+ ?. r) p8 W% I9 N0 @( |

4 T2 v% }5 }- Q4 q) U3 T8 vpoll-class
: X" V7 o2 H5 {: f$ G" ~
0 {# f  l' s+ y; J4 i
get-color

0 `# f* F! E' q. M) r
! Z) a' [( x4 x1 ?- z]]
) e- S! D* }2 s2 P8 i9 ~0 Z4 [
+ b' B0 ?) `* p;;
如果所得的信任度满足条件,则进行交易
# t; S9 l+ `8 u* O% h8 x2 \' n: `+ G# s6 K1 I8 a
[
1 e9 V5 Q# z8 ~) A
( l+ j8 `8 [+ y8 x$ Z
rt random 360

1 `( c( U8 H$ u
1 D" I; f. O' F; dfd 1
; O  v3 K, }2 E

4 B& L: l$ W8 Y- e- f]

" C6 l- m9 `6 G5 f1 K; ]. Q- ^  ~: P8 W, X
end
  I' N+ {! p8 o: j- o3 Q
1 o( y% Y& i) v3 B0 E  d
to do-trust
7 s# N: t6 L3 e& t! y7 Cset trust-ok False! }( w5 ^4 k; J+ P; [/ A1 e

& I2 f, S7 P  Q1 `
; `  ~9 k0 D# c
let max-trade-times 0
# a* z4 b0 v* X& oforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
/ j* [; O* |& ?4 ylet max-trade-money 0
  h* `- n3 V% ~8 |foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]+ a. g6 K/ V) b4 U" x8 g9 N
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
6 |6 z7 G' i  i% B
! _: B, R* h2 C* D
4 a1 j2 |' y/ }/ _; O
get-global-proportion
' X  L% }- g; Wlet trust-value5 x6 @7 h2 x/ K; ]( ~
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)
: O: T2 R' S, H9 \. [
if(trust-value > trade-trust-value)- Z/ c9 H3 _3 r' ~2 |& ~0 ~
[set trust-ok true]/ z( b4 G7 z; E3 P( Z
end" ^3 u1 Q8 O" e) S( W6 f, U

( ^  {. J2 R6 f) m4 Tto get-global-proportion
0 b0 U, |2 ?; g& ?- }0 v, Uifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)% m. R& _. F" |' R/ @
[set global-proportion 0]1 D( k$ B) U0 z- k# a1 S. a
[let i 0- m. ^: q0 Z3 c* I% l4 j& H
let sum-money 0
; B. I) C2 t$ G% g: D& p; ]while[ i < people]
6 B/ y9 f' S6 G  s3 q' t% ?- n( |[5 O' w$ Y& m! p
if( length (item i
3 R! K+ s/ r$ |1 u. o5 X- c[trade-record-all] of customer) > 3 )
- e% F) s8 h( x+ U; p' W
[
4 G' g; G" D+ _5 A+ f/ qset sum-money (sum-money + item 2(item i [trade-record-all] of myself))5 n, M# K8 M6 \' V5 `$ Z1 [1 n
]
" E! B" r8 ?7 N" u  F]8 D7 h1 y6 V+ R/ ?( Y# X' P* k
let j 0
, p. A* F% }6 M6 l$ A0 `, ~  ]/ Blet note 0$ j6 o* |' ?+ |/ `2 ?
while[ j < people]
$ f0 U' O9 p7 ?+ U3 f' U[; j7 e8 X" G  ?& J/ w4 m) d
if( length (item i
4 }  e- R: `  d) g+ K[trade-record-all] of customer) > 3 )
( I* D2 U4 ]& z; Q* q
[
! I, |/ E+ _5 f) c- fifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)2 T- j( @+ y/ j$ d3 w+ D
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]9 ~: ~: d9 W2 \. G! R
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
8 p1 k: s, N. H]
2 D5 k0 }( G: l0 Y]2 ]: O& ]; |  h! x
set global-proportion note' q1 E& P" Y3 j# f
]
- m: j* _- z/ X7 Send
0 w% F" s5 \5 ?! `$ s8 p0 }4 g: e5 @; i" e0 C" e
to do-trade6 J. _) U% m9 [) x5 S& \
;;
这个过程实际上是给双方作出评价的过程, Q8 f/ b) t- A) F1 }
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
9 c0 a# C6 k, s+ mset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价2 I4 F1 m4 l/ B/ V6 X+ A2 D
set trade-record-current lput(timer) trade-record-current
6 {: s% c7 A" G6 b) a;;
评价时间. C, ~; P2 L( F6 E, W% m0 N9 d$ k
ask myself [
  d8 j- }$ u+ q0 {update-local-reputation2 U) U: R& ^. r& F# V$ V
set trade-record-current lput([local-reputation] of myself) trade-record-current. q6 m. q. j5 F% M& J/ n( R
]
/ w. U0 c8 J. U7 j. M4 qset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself9 A3 Q  m8 U3 l7 n/ a( w2 p
;;
将此次交易的记录加入到trade-record-one
2 C: S& b( k) }; Z1 ]* r; {+ fset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)+ ~5 f( v7 p* _0 Y8 e4 R
let note (item 2 trade-record-current )
! ~8 ?4 ^8 `. w# d0 jset trade-record-current
9 \' ^) i$ _3 Z5 g+ s% N5 w(replace-item 2 trade-record-current (item 3 trade-record-current))

' {" ~1 B! g" q8 ?1 fset trade-record-current
4 m& K, A, _* n5 x' Y6 \(replace-item 3 trade-record-current note)1 J% Q# e$ b- ]- M1 t1 M# o
- \. m4 t* ^8 b6 r0 l

! k) b! h* w; V  R/ q* Xask customer [
; a! v1 A0 V3 [  }* kupdate-local-reputation
" z2 D1 J  m9 Dset trade-record-current
, x- V+ H& I( X% M6 Z' b+ s(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
9 C6 b+ r. g: M; X- |$ [7 z* J$ q' {8 V
]/ v& C( w: [; a( K: C
1 |* Z0 x3 ~: E. W: I3 H+ n

$ o! U: L1 ~1 {" b0 hset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
5 [: G4 q# f7 S& {& z* ]% P

5 \. }1 {$ V5 ^5 ]( `& `( Tset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
4 v; E* \2 g" L5 G) w4 T;;
将此次交易的记录加入到customertrade-record-all
7 {) f- [5 z: D  z9 @" Fend: [9 q+ |8 H' v# I
8 S) E  @& b7 G1 s" W
to update-local-reputation& h% ^5 i/ ~1 {( T% J
set [trade-record-one-len] of myself length [trade-record-one] of myself! n2 u4 n5 |, p, [- \/ l! f6 t. v

1 u1 O. q  V( C0 S* w8 {; ^7 s
2 A: m4 H0 O  I% c;;if [trade-record-one-len] of myself > 3

& G7 ]2 W6 }0 [% nupdate-neighbor-total0 T- Y4 d  V  G5 Z
;;
更新邻居节点的数目,在此进行' Q+ D0 o5 D, c
let i 3
9 V- v8 @' o" w& Tlet sum-time 0( e1 x/ R* d* I
while[i < [trade-record-one-len] of myself]
& i) [; H* n5 l[3 V% a3 _9 U5 U4 S: d( Z$ f9 q! k
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
. m  D3 t4 {: i$ Cset i
8 b) R4 ?( G; N: |# m2 B$ G( i + 1)

$ {& Z" C! P0 Z$ K6 a/ d]5 Q9 L/ g' }( ]: ?7 w$ h
let j 3
4 D0 D) |6 n* |* k5 l9 d- j& x6 Flet sum-money 0
& W* X) s7 i1 kwhile[j < [trade-record-one-len] of myself]6 v# W7 l- ^5 ]1 O
[: D0 h9 |, b1 `$ n5 U4 i) [
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)8 ?2 r0 }+ ^' V6 F$ E$ _
set j9 W7 ]4 S1 o; s3 b
( j + 1)
6 U  l& y/ p" l5 h& z% E5 A
]+ T" t7 V- J( F0 f8 t7 i" r( k$ B1 d; a
let k 3' V/ H+ k- }" ?" k( ]' H( ^
let power 0) D1 R. n6 a: _7 J6 l
let local 0
( b- k+ ?3 l4 B) \$ j( Mwhile [k <[trade-record-one-len] of myself]  Z* @. L. ?- r4 p8 k
[2 `, m; w8 G5 l  t' ]! B2 a) K
set 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) , P- R& n% O6 s$ d
set k (k + 1)' E0 D" T) G1 U" C
]
1 Z. q0 w5 C! n1 X" h" hset [local-reputation] of myself (local)* ^+ m# q' t* U2 a) |/ g' {
end, L' t2 N1 M3 y

3 b. s0 D, J1 c" s8 f% g( cto update-neighbor-total
8 `2 r3 M! z1 P& A. ~* ?: v  }4 Y5 t# p# W; L7 [7 D  U
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]9 D! D: k1 U6 U; e/ P
* j* T0 o4 z& d! y6 r/ O$ A& O, T
, z2 m$ }( G7 z7 W* j
end8 W% X: j9 R, Z

5 l' Q+ F! \6 O7 p* }4 h( Yto update-credibility-ijl
! C. q2 t% e4 {: S4 h  L9 i: ?, s' p4 J! ?% k% P2 M# x0 \
;;
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。" l- h  B% n) ^+ f! j) {, `
let l 0& S( l& A% ?' N( ~8 ]$ \
while[ l < people ]6 V% d% W9 W7 }6 @
;;
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
8 e) C1 D2 j. U5 U: l5 q[. n1 r3 ^6 O  K0 D: d9 w8 P
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
! ]; k2 I, S4 O; C: xif (trade-record-one-j-l-len > 3)
2 G8 R/ D$ i. F( r$ v/ j[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
, l" n8 r" ?$ n8 y. r) g, I1 M0 t% vlet i 3
; j6 K7 u4 |2 g8 h: Q- dlet sum-time 0/ t) T- g9 q/ u0 r6 }! z) }, y
while[i < trade-record-one-len], [$ T4 J9 ?; H7 m" \5 {6 E  i% t
[8 n7 ^. d8 [: I5 B$ @6 C  {; l
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
1 ~8 a, g6 v$ Z& v7 Oset i5 T' W& [7 h0 F$ h: V
( i + 1)

  ~$ D# T8 W$ V; a9 f]2 N. w) h& w0 d) [9 ^5 u
let credibility-i-j-l 0
& S& T2 u, a( Y;;i
评价(jjl的评价). k' d. M% v- s8 M7 s7 @
let j 3$ Q) _$ j( E% k$ j! E3 J
let k 4
/ r$ ], S. w8 I4 P$ E0 uwhile[j < trade-record-one-len]1 [* L* C) Y, S- w+ ?
[
- e' z6 K. Z: X: x) w! dwhile [((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
/ r  G0 n9 ^: L, {: y" W6 Y. L, ~6 a" qset 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)4 w4 e: x7 k. G( f+ ]
set j
, @% E0 }* A$ `$ Y& a- `- N3 l( j + 1)

- c7 Z9 Q  x- W1 J) F]/ j! P1 G' D4 m+ A7 j
set [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 ))
, u2 y* ^. o: J+ D4 ^1 W4 \
# K+ }1 W7 i5 X4 r  |$ |% K( K
& g8 b: g1 x" x. I& }9 L
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
  L# M- h; e$ s8 N- j9 o! I  K+ K;;
及时更新il的评价质量的评价  s. d) i6 r0 O8 o2 P5 _: f- C& H
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
/ s/ r9 q& E! L7 o( L) Mset l (l + 1)0 n7 a2 N/ G, v+ d% [+ O* R
]
& C  F$ i6 W2 h, [0 ?5 dend
% }2 Z( C* @. S1 ?; X# x- k% k! N$ @0 Z$ H4 F# s3 @7 ?3 {
to update-credibility-list1 o, ?$ S& I) P6 u5 Y
let i 0
; v: m8 x# K3 a) b5 }% awhile[i < people]
9 f" n1 W" L# ]. b) |. O[
3 B6 y6 _# ^) c# d8 m6 Alet j 0
; b9 O+ y; X/ q, Blet note 0+ E! S* O1 @- Z
let k 0
0 l$ h+ p6 \: [;;
计作出过评价的邻居节点的数目
  ~1 S. o+ _  B9 l7 h5 ?2 G. k' Iwhile[j < people]/ @2 t5 @, z7 x5 r) f- o6 i& S4 D
[) W, ?- {& C# i' q9 E& S) C
if (item j( [credibility] of turtle (i + 1)) != -1)
8 N" Y$ |6 A' b# B+ U;;
判断是否给本turtle的评价质量做出过评价的节点
& G  u7 p% }  z) m[set note (note + item j ([credibility]of turtle (i + 1)))
. W7 G! L" p' Q) i$ T9 e;;*(exp (-(people - 2)))/(people - 2))]
( c2 w! U9 e6 V6 m$ K
set k (k + 1)
$ {3 j3 E0 }! ?  c9 [! D]! J* a: k$ z4 I  W
set j (j + 1)3 U& S5 H! m- P% V6 Q8 k* b0 ^
]* D+ s+ i/ C7 s+ t0 ^4 [8 K
set note (note *(exp (- (1 / k)))/ k)
0 J3 @0 z$ h' B' a) D* Eset credibility-list (replace-item i credibility-list note)
& p2 `0 R# H- fset i (i + 1)
9 s! K) D9 j# ~0 A], V: ^* Y5 F% r$ P4 w  L7 V: |
end
& {0 }( E7 \* E+ ]6 X7 f* C, h) l4 {/ I/ b3 L/ m! w! w7 p, B
to update-global-reputation-list4 c& n8 x8 n2 n
let j 08 N/ t6 U8 J$ K5 p2 S5 d5 B2 H
while[j < people]
1 G& P& g1 S, K2 h3 G[6 x6 L  m7 A; _/ x) }+ n- `
let new 0
2 S) m9 H& _9 q) K;;
暂存新的一个全局声誉' }) K2 l/ h* ~( T4 \0 \
let i 0  s  M! g- o8 G6 p. {; I4 Z
let sum-money 08 W6 |; I& S1 b; E  b/ M! a1 k
let credibility-money 0
( r" W$ A9 b* {3 ]3 g( m$ A! Q, N! Uwhile [i < people]6 n0 n+ _* t3 h% B
[
* i8 Q/ j. I% }set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
% b% Y& D6 A7 f/ U( f$ lset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))$ ~( }! X; Q* v. B1 q. `
set i (i + 1)
- O! l3 ]* Z) @2 o& _]+ ~( }1 g8 x' Q+ w# s) S  N
let k 0
' m( O5 o4 o( c- i% v/ _/ hlet new1 0" r% h6 I& ]; U6 M4 H- R1 P) ^3 w7 o
while [k < people]
' I6 v  u; S; t/ X% }' Y[3 ?, e* p# `/ ^  j( F
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)8 h2 ~1 x, n: B) O6 c
set k (k + 1)
7 c3 o- _* t/ Y" R]+ }$ I) R) E+ T' t* X" B
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
+ W4 u. |8 {: h4 W) _' Jset global-reputation-list (replace-item j global-reputation-list new)0 Q# a1 D  B# P$ V1 r$ v
set j (j + 1). ~' d$ a2 s; ]- \% r
]
0 j, Z' @: q* z& T% j# Zend1 Q8 {# r$ O( m5 Z0 D

- Y* w4 \4 ~# W0 H0 F) |4 c$ G2 Y# z- `$ M# G) B3 x, y  Y

7 T! {& a3 f- ~' O% G. Gto get-color) S; M  Z: @7 X. X8 @

9 \0 F9 ]# X" c! z; g! Nset color blue

6 G' j+ Z0 q" o' iend# Y! `0 |/ @) S, q/ _

1 _+ K/ x( Q; g' y* E: Y9 U1 |5 c  Pto poll-class& I4 |. ?' Z. M5 o4 E
end; w# `1 t8 a, c7 g( w/ X

# {4 c: m/ d0 p  M$ xto setup-plot1
- g5 \" P4 _6 p. }2 z
' }( Z- d! b$ [% l3 Sset-current-plot "Trends-of-Local-reputation"

3 F) q7 n5 r2 D7 I, d% }  ^
# c! W2 K; d# r/ X6 B. D0 g' u# dset-plot-x-range 0 xmax

0 m9 S& O2 ^3 U
- _. P' e& v# Y1 t* ]: |set-plot-y-range 0.0 ymax
: o/ N& i8 w, L$ R
end
0 E! F" C- t8 K; U! I) D9 u  Y
2 L- ~' o" ?& @1 ~# Ato setup-plot2- J& \& g# h! d- x

5 Z. p2 f( o+ Qset-current-plot "Trends-of-global-reputation"

7 G" U7 d7 m9 E2 I$ h3 V3 m1 z
* L. Y! K: C6 t4 R% j9 aset-plot-x-range 0 xmax
: c! }4 W0 N; ?; n! W% Y
' b4 c! Y$ p) F; b9 J! ~) l: Q& Z! u
set-plot-y-range 0.0 ymax

' s' L7 e1 B; ?4 S0 lend% L9 G, C- R$ C7 L) W. f

) A. W: \* I: _1 q( r! `to setup-plot3$ R1 x$ n- f. a- N
; T! P+ c2 S" E0 Y9 z  [) v3 m7 s
set-current-plot "Trends-of-credibility"
4 P% i' ]2 w. T( T" o1 f
2 z3 v0 K3 X4 B
set-plot-x-range 0 xmax

) c: I+ y" ^% w6 i: S( u" o" \6 E9 u5 H7 o- k
set-plot-y-range 0.0 ymax
' z0 ]* U8 s: d3 j
end! B( s1 m$ Y; S, ^) w; ]% d% E
/ J" K9 t" `" V6 a8 I; G
to do-plots+ _. g8 F  J! ^9 `' E
set-current-plot "Trends-of-Local-reputation"
3 I+ K! Z. W3 ?: L( n3 Mset-current-plot-pen "Honest service"
0 h. E: c# I7 b0 F3 ^  aend
% f: x; t+ d' z2 F4 F" D9 J+ n8 d+ ~- L6 D, c$ Q% w$ M
[ 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.
- ]7 U1 f( N8 n1 I' L( m" Y2 q
: v0 z5 [/ ~; \( c% |) X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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