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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  `- ~. F. N, n1 T
to do-business
6 k) k: V5 U5 d4 X" | rt random 360
- d( y1 y* }, D, \ fd 16 Q+ Y# P; e6 s  y
ifelse(other turtles-here != nobody)[
5 v- C* B: J' G( r5 P! f   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.
* w# P5 I6 s' C6 n# o  g   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    5 Z7 }% G0 A+ u; b5 N
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer# L$ p/ C6 }+ I7 |
   set [trade-record-one-len] of self length [trade-record-one] of self
% n! K2 ]8 i' o3 t7 i1 O   set trade-record-current( list (timer) (random money-upper-limit))
+ \# t7 c% b0 ]+ ]2 B
' N( T6 k. f/ a  n) x问题的提示如下:2 {0 B! I7 C% j# h5 T& a* u
: k2 s7 z" W# P9 _5 |
error while turtle 50 running OF in procedure DO-BUSINESS6 {/ e- h& S# P0 B, l5 U/ y
  called by procedure GO! |3 ~  [0 {  f# g8 K' f5 P
OF expected input to be a turtle agentset or turtle but got NOBODY instead.* v. }# F# I- M8 N3 j, ]) p& p
(halted running of go)
4 r+ t5 C5 S8 v& u0 A) k) |$ [" R' j5 `6 g" b3 B
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~~
. _4 `! S+ t" [$ f6 ^8 R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
) X7 O& \" W6 C! j0 Pglobals[
1 q$ s' Q/ d6 N; ]3 ?xmax
, `& ^8 s4 ^: I4 Z! G4 Y! dymax
4 f6 O! b0 ]- r" A: a# cglobal-reputation-list- B/ L. m* \4 f7 j& B& |9 [4 a$ x! K
! \+ [6 S2 Q; |
;;
每一个turtle的全局声誉都存在此LIST
2 l; f+ F( K1 k8 qcredibility-list
8 g. o" z9 U& \, U* |7 r1 R;;
每一个turtle的评价可信度$ r/ _! @" G* T6 r( l6 `
honest-service: c! J3 ~& F3 C, p* }5 u) G2 I4 c
unhonest-service
$ M6 E0 J0 h: @5 W- f& H+ p& N0 Foscillation
: L# n2 t% y( Z; lrand-dynamic4 E0 x0 v! A$ C
]
: n0 `# f2 J5 ]- v
9 G3 g' `* c1 I; ?( Zturtles-own[
) R- y7 J+ p, k* I, }trade-record-all& b2 ?8 s& \! S
;;a list of lists,
trade-record-one组成& t3 C- o4 e0 Y( Q7 _9 K0 l
trade-record-one
5 ~. X3 f( m/ k9 i) q" x;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录( A  n5 M$ P2 x+ w& ~, U

2 D3 S  E% Q  m6 n' ^2 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]]
2 E5 Q4 O% M+ l% ?5 j3 Wtrade-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]
9 G9 C0 H  n1 P( `2 f7 ~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+ `, N# j( {8 C1 i# v
neighbor-total
$ Z2 Y& K0 M3 K* C;;
记录该turtle的邻居节点的数目5 E3 q5 w/ m9 n. ?8 O* X* A6 b
trade-time: A  b( }9 D8 V% E0 V; ~7 z: E
;;
当前发生交易的turtle的交易时间# p$ L, A; s: p- i% Q, {9 h
appraise-give
* c& @. U3 }: k9 Q; Q% _+ J$ H;;
当前发生交易时给出的评价3 ~+ j: }/ ^" h. ?; i
appraise-receive
  ]2 }+ a3 `% @% n' O;;
当前发生交易时收到的评价
5 X( p" M! I% j( v, s0 e" g! x& y9 ^appraise-time
% z! k; S" l: ?9 {;;
当前发生交易时的评价时间5 ?6 S3 `2 ?" f9 M/ ^9 s* s
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
7 j9 i1 r9 ?0 ^( w2 a9 Btrade-times-total7 h( I* r! s, B: r
;;
与当前turtle的交易总次数
& W- j; t) D. k2 v1 _& {3 P. }' utrade-money-total# Z& a' I8 I6 B* ^( N* L
;;
与当前turtle的交易总金额- L* z# g; @+ i! r
local-reputation
) C, R# ^  p) `* f% x$ Y. uglobal-reputation( I" o  G1 c0 K. i; o, \1 i
credibility# ?1 f& X0 B% @6 G# W5 F3 W
;;
评价可信度,每次交易后都需要更新( M, N# b( k  l
credibility-all6 B/ b0 \7 p: H  R: m( {0 W
;;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
( k$ ]5 a4 {/ o( E. s3 N+ |6 x2 ?  ?% W* V9 D. y
;;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
( x/ a+ Q2 `" u( x  q1 k& G7 ?1 _* Ccredibility-one
& C: w: v0 q" l5 B' |;;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
+ I+ V4 G0 m7 [. ]& b1 S6 d. O/ oglobal-proportion
+ B7 _, x! m; @! ^% Rcustomer* K5 `) Y% O# E6 [
customer-no4 T6 @2 i+ S) X: z3 ~8 L: }. ?
trust-ok! Q( A' @+ g2 `0 ]# }& B
trade-record-one-len;;trade-record-one的长度
+ u2 I) E& l# I' w]4 \- m4 d4 u  ^
# ~8 I4 {& C4 t& U+ l5 R$ k0 I
;;setup procedure
# v( t# C$ j6 P7 K9 V5 V; s7 Y/ q! u* l
to setup2 Z% V, ]2 f4 c9 x; A5 H; x( l

! Y# u5 |) q- Y$ a+ }2 zca
) t! d1 {% z3 s# s4 ?
) [3 D. l# i( Z- }. }. B
initialize-settings
  c6 G3 x$ `+ ?: Y' Y) o1 S; l
6 H) |5 F) Q0 u) d' W& \+ X2 @
crt people [setup-turtles]
' l9 B' ^2 l1 Q1 _" n# k! i, X( t# A

' Y- `$ [/ n6 G0 p! e( M2 zreset-timer

+ s9 X6 r9 ^3 s. |& o2 N, S: q2 b
poll-class

9 r2 o2 \, R+ S2 ~8 a" V1 W7 ^$ V6 e
2 R+ h! `9 ~( q( Esetup-plots
/ _2 l; [" |: ^/ v/ x5 I/ o. `

; x& K* S) }8 W  g: \do-plots
  p. i, ^5 Q2 B. ?  @
end
# B& |& f  ~! |7 ^  {" Z# d  Y0 c( ^( Y; S
to initialize-settings
7 \: Q- g2 T- I0 h) ~" h6 P' X! N  i- w; n
set global-reputation-list []

. X* m5 c4 j+ d- J6 j& ^$ v9 s0 ^/ ~# t
set credibility-list n-values people [0.5]
0 B( N( E! D4 X+ ?8 B9 b& p
' J* {/ [. s( i% ~
set honest-service 0
/ S2 Y9 c# G6 Z2 ?; g( ?, G* `# L  b

4 R' q8 J- g! V; iset unhonest-service 0
9 b: M/ n3 o& [
( L- `; p9 Z2 U( @2 |
set oscillation 0
! d8 t0 {* r, F0 e8 d
5 z) s8 f! X6 d: v
set rand-dynamic 0
$ m% l) O6 j( ^) m/ c$ @
end- [  l$ g7 F& a4 F1 t/ c

6 N/ ]" K8 U! X2 \7 wto setup-turtles ' A1 M% I& C- l+ W
set shape "person"
0 S9 k* s( K' M/ W8 s8 Msetxy random-xcor random-ycor
6 N/ G6 d  q5 u; Xset trade-record-one []4 z0 d0 R7 b9 P. [2 x; Z0 o- I' |
7 b, @  ?8 z3 r6 C
set trade-record-all n-values people [(list (? + 1) 0 0)] ; A' |5 w+ e4 p

8 {2 J9 x7 Y, }set trade-record-current []  D3 Y$ Y; P( M. W6 h
set credibility-receive []
3 b4 C3 Z: n- ]0 C9 Uset local-reputation 0.5
! w% E6 |( s& G1 b5 g6 Vset neighbor-total 04 F$ B* A  |' F4 O
set trade-times-total 0
6 }6 B5 `/ z5 S7 sset trade-money-total 02 ]9 [+ S7 q& F1 `3 n- y! |
set customer nobody* Y+ E# b- b2 q1 e1 n  R4 Z9 C% G
set credibility-all n-values people [creat-credibility]
" e" ?) E. X! [set credibility n-values people [-1]) D# w) z, `: s
get-color3 F( I2 J; ~8 ]. _; o
9 c! ^; K& ], k- E% h9 S; ?: s
end
9 O8 h. R/ M; c" \; M
' F# D% C; C3 F! g# x! W( @/ gto-report creat-credibility
; q' d6 Q$ o' Q, f9 freport n-values people [0.5]6 r) ?, k9 l3 i5 ^% s" G1 W
end
  e) t* \* b% s$ r1 A
2 C& [! z) a' t0 C2 V- }to setup-plots# G. {( x( a) W- F* E$ p/ i$ d; W

  o! ?1 Q* x% ]) z5 s6 I: {set xmax 30

2 |; j6 Q* G" q: q7 D7 X! q* c( e& h" v  `' b/ C" P! U1 {
set ymax 1.0

) y2 X' R3 _# M: f; c$ N8 p% B+ H$ ?9 h; O
clear-all-plots
& \$ U" o  l! O# |

3 d" N  J5 r5 e( J* ~/ y1 Zsetup-plot1
* u: g$ A* t: p
& n; _( T  Z8 y" g6 N& w
setup-plot2
* B$ H5 z6 l; j$ w
, Z, V+ J1 Q+ Y* S! t9 q
setup-plot3

- H, o! C- |% Wend
" D. z) P' x) V, l5 m* f. Q5 J% p) P4 G9 z# ]/ e4 p* b
;;run time procedures& B# p$ n' E' \
; h/ [% I8 ?+ l* V$ q( @; H  j
to go$ j8 I3 M( i! U5 X

3 `! l6 `8 c3 }! W+ G! Aask turtles [do-business]
* F, a' |% L! \1 r% m) L  a- s
end( N; L& H* s# \1 w3 K- c* C# W

; O; `" C4 K7 z2 u6 Z) n6 ~to do-business
7 d' D% c6 i9 [/ q
5 w; ^- p% l" s9 q7 v
; u* ?  C, ^$ \; c+ @
rt random 360
) O/ q) v% `1 m5 c4 ^# c4 \% B
/ R0 p$ W4 e* d; W9 X, ], m
fd 1

" y/ t0 E0 s$ A
% f$ O7 F+ ]' d' Mifelse(other turtles-here != nobody)[

! A# ?& e' k- K+ t1 O. r# ^: v) \8 [1 U1 h& S' I
set customer one-of other turtles-here

6 U3 f8 }# v" H/ H7 g% y
1 s% j* i# b/ r$ m; u9 r) z;; set [customer] of customer myself
3 Z" s; b7 H+ _# B. r

3 }7 }- O: F1 g- T% s) P* Tset [trade-record-one] of self item (([who] of customer) - 1)! v' ]! N, M  v2 L: U
[trade-record-all]of self
4 s, b/ b8 D0 q. j5 X/ e;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
; {2 N, h4 [! P7 W+ J) q
) J8 n/ N0 D. [  d, E$ N) m
set [trade-record-one] of customer item (([who] of self) - 1)
3 @; w% `- s/ ?7 W" j7 k  Z[trade-record-all]of customer

" ^2 Y8 W3 F  C5 {: a( ?7 T% l6 l7 k! p( m" P
set [trade-record-one-len] of self length [trade-record-one] of self
( s( Q( I" x- ^* |( B
9 [7 ]2 }6 ^8 b6 r
set trade-record-current( list (timer) (random money-upper-limit))
; z: L4 ^6 q2 R6 l1 o

' a. v3 m; m) v! i% {ask self [do-trust]
: |8 f1 q/ b5 X2 c! V% n6 ~;;
先求ij的信任度6 y/ {- b/ S! L8 m

! }; x# R* ^( V- j, p6 {if ([trust-ok] of self)
- x8 D7 [& ~$ }( N: Q7 i;;
根据ij的信任度来决定是否与j进行交易[; K( r) @( }- E5 n# g& w
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself" W2 A4 E  _* y' ]( w# B! d

" h; P) F, P5 ~, e0 H! n[

" K1 J" a! U0 x& ^, d; X) l% ~/ O3 j; d5 B& W8 a" A6 I7 g
do-trade

1 t  W+ q, n% H8 K! |6 B
6 o  C4 V, H. F, Q5 y! [$ ?- g& Cupdate-credibility-ijl

' C! K  x9 a" j' Z' ~: V9 M) u! r. E) g
update-credibility-list
  y7 p3 a2 K3 b; I+ F

' \- n8 @8 O0 N& v! ?$ Q
' e/ W# _# J0 P& G' I( {% supdate-global-reputation-list
$ \- n+ Q6 U4 I& i' u- h$ {/ P
7 J6 M# p7 F$ b5 t
poll-class

, a8 G5 I: p7 \  e) Z4 K( S$ Q! D3 y! D$ d  `
get-color
! O: g) e: @' N) c0 u9 [

* m) {4 I+ ~0 J3 Y$ W0 m* {]]
8 x( o5 f% h1 z) ?% e! E6 F& l
; J& y" q, A5 ~5 E2 z/ h;;
如果所得的信任度满足条件,则进行交易) e2 Y' P* K  T# S8 f9 y& Y$ ^
7 `9 T  f: [1 {( M$ L( x! g# o: k
[
9 L8 e) m7 W, ^5 F; R

8 d+ P! I$ u$ y! c0 X9 Drt random 360
& N0 m& H9 e5 X7 }# q% Q

! v+ a0 G3 z) L& F1 g- ]fd 1
9 o7 V/ Q. }) C; ]% p  }
2 N3 I0 G' P) @9 m
]

; I* q0 Z9 c" I4 Z
2 z+ w9 u$ T. Zend

# P5 s7 h  w! P' T& a2 H' a; e6 y% T) Q0 a& y" F! ?  K
to do-trust " ^- {: W) {  z( K2 O1 `1 ]2 r
set trust-ok False% E. i2 ]! W, G* L) ?# t
1 m* C; E. c' N+ F3 m: E
4 X# a/ @6 w- l" N
let max-trade-times 0
+ U9 u6 z% r& N- }9 Sforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]9 K* Z! C% {. K6 i& z9 d: }
let max-trade-money 01 a6 c. y0 v4 o1 y, @
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
, ]! ?) D% @1 g- p! Ulet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
, t8 j/ I- q, j
* @, S6 D% b$ ^

& ?& W" z$ j& J- Fget-global-proportion
# P/ O: Z6 f7 D( ?let trust-value9 [; `! m  m! f' L9 i
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)
( M- \+ Z( z# J  t3 p5 Y9 \
if(trust-value > trade-trust-value)
* X& u* a1 ]" ?8 z' S  H[set trust-ok true]
# E4 P1 o! k  @" ^- _3 V+ G) Iend8 H7 n: d! L1 O

0 |$ ]6 B: Q6 wto get-global-proportion7 T0 I# H  X4 l
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
/ X8 I% J+ X, o3 X[set global-proportion 0]
& J. a- y! @2 I[let i 0
# ]  {5 {9 Q( r: f, Ulet sum-money 0
2 [$ q- B9 _  \4 ~& N& jwhile[ i < people]
9 r! F2 u' H% N+ Z[
/ p# _% ]5 k) R5 E. vif( length (item i
  K2 k2 l3 D( ?* w[trade-record-all] of customer) > 3 )
" n* O9 N0 y! U! @& `9 V0 y
[* m7 i; r1 d9 t
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))- ~5 F( m5 ~8 E! ?7 U
]# Z3 [; a5 x7 I6 f. j2 o9 @7 l
]: I7 n- P7 ?5 \
let j 02 `4 g: S5 I* p9 I. v9 Y: E
let note 0& Y1 _, \4 [+ t* E7 n& C
while[ j < people]
9 t$ O! J% m$ U4 ?3 g2 {[% p1 `5 A2 r6 {0 w! Z9 l0 k4 T
if( length (item i" x: Y( _3 F5 _
[trade-record-all] of customer) > 3 )

, `) T! a$ {* y/ B- @[
- H: S' N  t* h( X" X6 w  Bifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
- W4 Y" ^- N6 T[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]6 l% [9 Y8 Q& K7 B6 X, h* x
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
7 k6 N' H) T/ z- _6 M5 `/ X( c]
; l( ^; M9 r4 i8 c+ L* x]
5 ^; y* C7 Y" _" z* u; C, D# \9 Y) Hset global-proportion note
) p! |; P  h6 z1 h  L6 l]$ _% f4 E5 z) g0 o4 u/ W
end" j4 x  _1 l5 \3 @/ c% s
! }: ~& `% u' f% D. ~, ]# ~7 j
to do-trade
5 ^) _+ m6 U% O4 ^& H+ `5 V  B;;
这个过程实际上是给双方作出评价的过程
' u2 V8 R5 ?! mset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价8 x. E1 w& S  A, ^" k
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价2 K8 X* M9 U& e1 @6 X
set trade-record-current lput(timer) trade-record-current* M2 K5 c& I6 q! G/ d: C' b
;;
评价时间
8 D* o& C. L+ y5 bask myself [
" d' W6 a& ^) N+ p: |) @update-local-reputation
( o3 L7 g1 v: o/ |set trade-record-current lput([local-reputation] of myself) trade-record-current4 }  Y' z+ T0 q, z
]2 i! c' f: R" I2 \) B9 \& l
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
0 f1 }4 ]% f: Q1 |;;
将此次交易的记录加入到trade-record-one* L5 L6 @9 x8 P% |: [9 h, ~* W
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)2 h- m. k! F3 M# R8 G
let note (item 2 trade-record-current )
. e. O6 }* g! @, Yset trade-record-current  Q* N( S( c( L
(replace-item 2 trade-record-current (item 3 trade-record-current))
& j& I4 ^8 D  A# n  [$ k; i2 h
set trade-record-current; w+ u* O& x& U: e+ p1 ]- L4 V
(replace-item 3 trade-record-current note)1 G/ m) X9 A6 o, i

0 r) f# N5 @1 Y7 S- h
0 t' C+ f/ X7 B7 U$ ]0 r) I( `
ask customer [3 J8 n% I7 z% v9 {: l
update-local-reputation, ^9 ~- ]9 t9 Y5 _1 D) N
set trade-record-current: C1 G8 M. m7 o9 B
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
/ g6 q1 v5 i2 l5 l  Q" ~8 M9 N
]
  |9 y3 C* V" s; a" E: e3 Y/ O/ |  ?  O& g

* n( \. ~4 P1 z( B# y. H% |3 Qset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
0 a- c. o' U! Z4 Z& k- {8 d
' v% E2 k( S0 k) @% A) p
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
# P; |* C' Y% F8 };;
将此次交易的记录加入到customertrade-record-all
' ~; |$ }, n* a7 j& h1 H% c& Xend9 W$ W3 }9 C: K% e( h, Z

9 a7 c4 l/ P5 W% R9 \- z6 k9 lto update-local-reputation
/ h( V8 x1 H5 z  k/ {: l+ f5 _set [trade-record-one-len] of myself length [trade-record-one] of myself7 P  S. T2 o6 R* j% l
- Q1 E. i& W, X2 |; V

' F8 S+ Z: V; i+ v( l;;if [trade-record-one-len] of myself > 3

1 K3 @, o+ A: b2 Q& fupdate-neighbor-total) _4 ^0 t8 T4 E$ A# {' B
;;
更新邻居节点的数目,在此进行5 I' P) k4 V- a( o! p5 H$ I% Y
let i 3" p) Y- T3 ^) [
let sum-time 06 F, t: G: l- s! r% `  U
while[i < [trade-record-one-len] of myself]- h& G; ^% @3 r5 b
[' \. U* G7 i/ h+ W/ v5 l. B
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
9 o  n0 ^, s2 h, P" t: I& M) aset i
9 u: w% b$ x1 i7 @: h7 R( i + 1)
* d5 z/ A& ^% I  f7 }
]& Y/ F* H# ]2 T9 w. ]
let j 3
- s; l' h. I/ L' U9 clet sum-money 0
* L, l# w& I" }6 R; y9 k/ ^$ `while[j < [trade-record-one-len] of myself]3 s+ U$ d+ ~; P! I% Y
[- U5 B) N# w% X7 F. x1 l
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)
6 s7 b; G, t4 H& B4 Y% O0 X: F$ Jset j; w( r$ n# Y9 |6 P
( j + 1)

$ y; y# I& k, y( e* H& l/ ^. o' m+ [6 j]( D; H/ |. a( T& X
let k 30 K4 p6 j5 A& j
let power 0' p* T. x1 g4 |, y+ o
let local 0
9 C# ~0 m' D" A) \while [k <[trade-record-one-len] of myself]3 s( {" i7 r: P9 r) G7 y) [2 r
[
# E+ a0 n- O1 D. aset 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) * X- h3 ]* ]% C
set k (k + 1)5 J2 j6 F( u, y" f, D7 Z6 A5 M% s7 M
]
+ F& K1 J1 z  sset [local-reputation] of myself (local)
6 {1 y* v# `& V  {end
; I5 l( `0 X; p  w8 d( z/ N  D# Q3 Q* T9 s7 q: Z
to update-neighbor-total: ?; J2 Y; z; Q- s3 \

- V: m  W& j! Tif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
  V6 Q2 {- w9 P1 ?; }+ a5 Z1 W; _$ }. y+ o7 c
: y) P. {; C3 Q. p( i; L- ~
end8 R+ P: B, x. R4 X$ A* I
" C' J" }0 f1 u
to update-credibility-ijl 8 f" h+ _" K$ s3 w( S1 K
, k1 ^# C6 ~- p; j1 b
;;
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。
( w$ M# j' M- y) |" ?let l 0
1 u3 y) p: y6 H# y* W; [4 m2 }* cwhile[ l < people ]
7 O3 \$ q* r: T! j  C;;
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
' D  ~7 ^( }" {4 n1 f: K[
5 ?3 ^- `* U+ d: ]  V# |" M4 \let trade-record-one-j-l-len length item l ([trade-record-all] of customer)  d' Q: V& h% i5 u% {" w: b+ V
if (trade-record-one-j-l-len > 3)
+ ^; d& K4 R9 h0 u  O* u4 }[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
* S- U7 M2 f7 _, T+ s1 Ulet i 3) H; p0 V# {. j# @
let sum-time 09 p, u3 v& C7 k9 a
while[i < trade-record-one-len]
- `) v+ f* n: H9 w: O[
5 m; i3 H- w9 e" B1 S8 Hset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
9 L- i: K+ i" q8 g* L# f# e" p! |set i
- Q& [$ h6 L+ B; g( i + 1)
, Q) N* H! |/ n& ~
]
. `8 c- z# F0 ]. t9 Ylet credibility-i-j-l 0
  y" A6 i! _* K4 |;;i
评价(jjl的评价)9 q/ ^- ^7 J5 U9 ^' _7 @
let j 3
1 T& B2 \. p% @5 ^. N( F8 _let k 4
7 K6 E* S( \' b* g& c, `# a- `+ R) pwhile[j < trade-record-one-len]
; C! f6 `1 f# h( w2 C% D[
6 b. O+ j1 \3 M5 awhile [((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" _/ p3 t! X0 s' n% T6 S
set 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)1 r' p5 d8 c/ {6 v, v2 p. C2 [
set j
; i% C3 y, s1 f8 q, F( j + 1)
4 y9 g8 O  \, ~+ u( N. ^8 b
]  c! Y% G" p. U* j( U$ A5 M* q
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 ))% @& l# x" f: ]0 P" S' L
; P3 x) G9 B7 i: v8 i8 ~, l6 R

3 b* p/ \, T: T& F$ G6 s# Elet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
/ U+ K! H- V! Y/ W;;
及时更新il的评价质量的评价3 a9 ^! R2 |9 O/ E8 L+ ?
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]) O, y  y9 o3 G4 U
set l (l + 1)7 Y  M$ ?1 s, v9 P# `) Z. `
]
8 y: D# M/ e# ^6 y& H0 ^  `+ H6 O7 Uend
. P" ?# X8 a! F. @# {
2 F. }3 E' `! s) _: T: N3 p: v1 Zto update-credibility-list
( t6 S5 K& [: O4 f& Ilet i 0$ b: r' @! ?) A8 `$ \. u" N+ L* Q
while[i < people]
# X# \& U5 Y: F* t* e" `4 L: q, h0 y[% m' w; a( e4 P) L3 v1 X
let j 0
* o! D1 U1 p( D) Z. u3 Dlet note 0
7 _3 C6 i- |$ `let k 06 \% w& [+ _" G$ c4 |* s& s! }3 L0 l
;;
计作出过评价的邻居节点的数目
: S" G2 `, r( Pwhile[j < people]5 q' a" s. B  X. a# V+ @
[9 q- V6 }" O  I. F& Y- G8 ]
if (item j( [credibility] of turtle (i + 1)) != -1)
9 {5 {1 Q! N; J0 j; p/ ^' Z;;
判断是否给本turtle的评价质量做出过评价的节点
% m- S; f8 k( O2 d6 H! u[set note (note + item j ([credibility]of turtle (i + 1)))/ E4 S' L' i' R6 }4 Z
;;*(exp (-(people - 2)))/(people - 2))]
5 p) H5 Q+ h7 v: F! x+ p
set k (k + 1), {: E- z! h4 s: h4 A
]
5 B% I  D/ v2 jset j (j + 1). f9 ~+ m( A6 J- ^
]6 H) n) l" Q2 E( ^# P
set note (note *(exp (- (1 / k)))/ k)
" [! H) d: T. ^9 e7 hset credibility-list (replace-item i credibility-list note). v4 A' ^" a& X: \. B' g
set i (i + 1)6 q( E, B6 j6 \
]
6 E0 b& A( B: @9 X: Aend
2 Z4 }2 B, @4 ?2 U1 I
. F6 X9 B* i7 U4 H: C' R5 ?# Lto update-global-reputation-list
) U% ~( G& ^/ y  [% j' ^2 a( r4 c/ Rlet j 0
7 J/ y4 A! `  H1 kwhile[j < people]
3 T# d+ a# {( W5 P6 [; n6 ~[
/ y( y3 o0 r% j3 \" v5 ?let new 0. j2 ~1 R4 u$ C4 o* y) m+ y
;;
暂存新的一个全局声誉
. Y- R6 a6 |* C3 s/ ^0 nlet i 0
, M. U+ Z4 E! _+ C  D1 N7 zlet sum-money 0
) g6 _) Z" P$ I  @$ Zlet credibility-money 0$ l7 ?, u( e2 N6 b. t5 r! H; T6 L
while [i < people]
: G5 ?/ k) J2 t6 _, h6 k[8 d" ?' w7 m9 U! v9 y
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))" Q  `; u) F* y% c' \' u7 X
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
: d" u, W5 {8 Q7 _, X/ s4 o  sset i (i + 1)$ t/ E. h( M- I" T
]1 w! K% k0 M' G$ s" [
let k 0
7 L* Q7 J8 R0 i: E+ v  Xlet new1 0- {/ V' X' @2 D$ ~: ~
while [k < people]* I( O9 ?1 f3 l  T; m5 |+ E5 Z
[
- |1 V. y$ F  e' P0 Aset 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)
  \! q8 a& v+ Z$ ]set k (k + 1)7 b) @* V# z8 _" k
]
9 O8 k' H$ A! C: `0 i4 `set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
% f6 F; O/ U4 y5 }( _set global-reputation-list (replace-item j global-reputation-list new)
$ H) h. u9 b* v' Eset j (j + 1)/ }8 I, V; c/ ?+ B- j2 N
]* F+ y: j! ?" a9 d: j
end5 u6 I; Y3 J- p( o* N* {( p& F0 c
6 x+ h1 _# Y/ \/ X$ }& E
+ P' N' E) t! w) T# d* ?
! q3 k/ u  r' M5 u/ b' Z
to get-color
& s0 n) f9 R7 G, R6 k8 h
* o8 X5 X. I, V3 G9 ?& Mset color blue

! z* P. x: O2 v1 z' \. uend
* s2 S4 h" C/ {6 ~4 B) j6 C5 }1 N
! C6 I# h8 ~% \5 A( b! [to poll-class
& }9 L/ z4 M. X: |end" `- @7 F3 E' j7 @
  x" Q/ G  M2 k  B; u
to setup-plot1
" u; H; l: }' t5 _# T4 S$ w: w& T7 \0 e3 A8 W$ s, P, [
set-current-plot "Trends-of-Local-reputation"

2 _5 z" {6 v: }2 b8 D' Q8 {. W
& x3 Z# \2 y: {' _1 {8 n) Bset-plot-x-range 0 xmax
  d: i6 j! C; m0 X

4 P2 m/ i1 I2 Pset-plot-y-range 0.0 ymax

; \( u+ `: n0 p# I& _end
; h9 B3 E' V2 z! p; u% b0 y; G2 X
& V% u: M! L& N' ^to setup-plot2
, h% M: T# D! @' c! v8 ?! @7 B8 w; r
set-current-plot "Trends-of-global-reputation"
# e+ [# C4 l" k& T/ Z% [' l6 H

  p6 f! i& l( f  Y% E% Q2 ]set-plot-x-range 0 xmax
8 u1 a8 r) I2 J1 o6 _; ^1 a

. y! a/ q: Y# Hset-plot-y-range 0.0 ymax

' G6 O- `! G, [- x* w. i5 [end
/ S9 p. ^! q& C5 A7 B) y3 Q* h1 i$ L0 P! @! d; ~; X. Q
to setup-plot3
9 U4 v- ]- T  B/ O  m: J2 b" _+ X* e! `$ u! B. e+ k
set-current-plot "Trends-of-credibility"

) W( K. y8 W: i# q
, n7 u! ?9 Q' f% ]+ gset-plot-x-range 0 xmax

! B$ z' m+ G# P" }3 c
6 K" V* x, I) M) T5 Fset-plot-y-range 0.0 ymax

( m8 ]) r8 w% s, Y: @end
" i# G. ?. _5 u$ x" q9 c/ r; K9 \# u2 f3 I  P: |! o. }/ }
to do-plots, G3 E6 I' c. f; K4 t% X# G: P: Y
set-current-plot "Trends-of-Local-reputation"6 n0 [5 B- o8 G6 b' k1 Y, N
set-current-plot-pen "Honest service"
4 O( y: o% E* uend+ Z% [, O3 ^1 h; e4 j5 \
. M* r# r5 Q, W4 X/ H
[ 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 a# w, ?( R% V" e0 b6 O9 h. _

, }- a7 y' C9 H; q* B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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