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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:# d" Z& _8 |9 P+ K8 w+ ~: S. x. [
to do-business
# m% ^) F& f% d+ z- W rt random 360! [- [9 }( Q4 T' m
fd 1
2 e' E) ?- \- W ifelse(other turtles-here != nobody)[
$ J- w$ p$ \# E0 `   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.
- \: ]/ X) j, e+ a   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    8 h& W, W  y' y, k
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer# \5 _# Q0 ^+ M" u, o; U* X+ g
   set [trade-record-one-len] of self length [trade-record-one] of self$ i1 J8 d3 @! O4 a& }8 U
   set trade-record-current( list (timer) (random money-upper-limit))
4 {) w5 U' h% i1 E9 I, t+ i& ^# E( z" Z
问题的提示如下:
7 n  ~" a7 T' d: Y" Y7 F$ j
4 M/ q( F: A( F' G! d  w+ i2 [error while turtle 50 running OF in procedure DO-BUSINESS9 V$ ~) n$ Q$ E. v9 k2 E! j/ M/ s
  called by procedure GO. u: J* i% D! L  E) Z* l
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
4 \& f+ c$ }$ w. m5 l3 F5 V
(halted running of go)
' J+ G7 ]8 x$ L9 t7 Z( g4 q+ f: I0 b5 G2 v8 s# ~
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~~
1 K+ K: s: d  r0 U7 ~* q" g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/ t" w/ j; Z2 y% [
globals[
' y$ W; W. q' j1 Y4 _1 P6 \) e8 Uxmax2 D" i9 ?7 I" V5 `$ D$ F
ymax
0 R& ~% A  P  J1 S/ s5 wglobal-reputation-list; Z- _9 P5 m* V, i1 f  J5 M
8 P& w/ S  m3 q! _* |
;;
每一个turtle的全局声誉都存在此LIST
+ S+ q4 Y6 o3 L6 q, w6 ]! pcredibility-list
& J7 e. H! N; u3 ?* M6 a7 M;;
每一个turtle的评价可信度
, J/ V7 D% S- @0 R5 I. y$ Ihonest-service0 g  x# \. k0 H8 q
unhonest-service
5 G# v( Y7 [7 v3 u: Zoscillation
& {6 p# y" A7 G9 ^# U3 @& l' A) }rand-dynamic7 H6 }: b% y9 X+ l: U7 u8 r0 z
]
0 c# c8 F3 w% j' b3 b5 g, d& K
6 y1 N1 |4 W* S" p6 Qturtles-own[
& C& O5 ~7 g* K! T& ltrade-record-all
/ `5 C4 ]+ A: h, [. i;;a list of lists,
trade-record-one组成3 G/ B8 g% k5 F/ A
trade-record-one
* f4 h4 m7 ~  q$ N;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
  {: R  `, q) j$ z/ _
$ s. r9 ~2 R% x! I- ~8 q* R+ Q;;[
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]]
3 r6 p( c& Q6 j; ftrade-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]- a+ K7 s- ?. U! O" }
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! o3 j# k* n* f+ x" J8 a! |: a
neighbor-total  [5 A3 W$ ~4 e5 w9 j
;;
记录该turtle的邻居节点的数目5 z9 t- l- ^# F
trade-time
  Y& Q. k  S- g( w( H;;
当前发生交易的turtle的交易时间5 ]7 E& e1 ~3 s. g8 s" V
appraise-give+ M5 r: l$ U7 J- l+ x
;;
当前发生交易时给出的评价. c7 C0 h! x8 C0 B" c
appraise-receive+ i8 f/ `# ~9 U! d0 |
;;
当前发生交易时收到的评价& e- n' u. h- Z3 l' ]. |& o
appraise-time
. N) s, M9 D) Z;;
当前发生交易时的评价时间
. o' o; v& X3 `  S0 k* |local-reputation-now;;此次交易后相对于对方turtle的局部声誉
; Q0 F7 E, w3 Etrade-times-total- h" v4 ?# M$ j8 z+ R$ B" k
;;
与当前turtle的交易总次数% l1 L; R: l! v- N3 O
trade-money-total
" f# E! v, X# c5 B;;
与当前turtle的交易总金额" W  x% J6 g1 X* ^0 H
local-reputation
3 E1 U4 {0 ^) Lglobal-reputation$ t: C. b6 P* U5 D
credibility5 e2 n* X4 ~: }, M
;;
评价可信度,每次交易后都需要更新) C; O8 Y+ r8 F4 w
credibility-all2 \" i0 p  h+ `( `; P7 D
;;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
% }# ]3 G( u! K1 s# W) Z
  j5 l2 P8 _' w2 F4 J( R) `;;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
$ `& r. D3 Q- J7 P6 H( zcredibility-one9 y, g- N5 Z4 s$ E4 R
;;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
8 I5 s' L$ l/ |global-proportion2 a3 U2 V0 ?3 \: F5 s
customer
0 l- n' k5 |( }) l5 @customer-no
, e, h: o2 ^: F* J+ u0 dtrust-ok- m3 n' T; k. K. y9 w2 \# d$ N
trade-record-one-len;;trade-record-one的长度
: Z, X! h+ \6 N, h. b3 `]. i6 Q9 l8 V% D. D& U& {. ^

/ e+ c8 E0 O: v9 j+ s4 x$ j;;setup procedure
  T& n6 M! V0 u5 G9 O7 t4 B
" F& n, D' J2 [6 nto setup% _  K: R/ G/ b! O7 g  ^8 o: F
$ m9 n% @/ ]" ?+ G  ~- @$ Z
ca

. d4 i2 O  p. Q5 Q$ `* R
8 D+ |0 O. {7 C8 ~initialize-settings

, i8 s3 u" k- l, @! ~
/ z. \# C- r2 G; k. R  xcrt people [setup-turtles]

0 v; i4 y: h( }$ o$ u- X$ \  H: h4 Z' V5 O2 a- l9 u
reset-timer
# L& z( _" @5 Z$ ]9 m4 G. G

! ~% F8 f  K& k# Npoll-class

0 M" f2 L, G7 y9 [
, u# t7 s# ^; l" l  r! L' k- wsetup-plots

8 P! e5 E9 K9 {$ j7 ?2 i
0 z" Y2 u+ _8 I) |4 C5 hdo-plots

3 o, ~* o0 @3 O& ?( W4 zend
1 K+ G) U! A7 ?7 [7 @
+ k+ X5 S- }5 y" j( J" o2 R2 ato initialize-settings
" X+ E# k: P6 _
$ K2 x# S- [/ O8 I+ ?3 s1 B6 W/ Bset global-reputation-list []
( s3 D5 P1 m% f& T. }
% I4 z( t3 S) c
set credibility-list n-values people [0.5]
( L5 S, [, z1 u7 m" w  _; P! P

9 `  w2 V" p; Z' M8 B3 nset honest-service 0

" `2 y( A8 O! `# N+ [& l7 V9 t
set unhonest-service 0
9 S, v  u* Q! N. Y  T" y7 ~4 S9 z

. W2 Y: |0 V$ D5 h, y8 oset oscillation 0

9 h% R0 R& I% w5 J3 C7 x( g# L3 U- o
set rand-dynamic 0
" F: d% O" ]; N4 A. \6 x" s) ~/ i
end
9 y8 x5 L- `( W! y) R2 e* y
; \3 R# c* I4 Y' S% H# |to setup-turtles ) _. v) R* Z. e, `
set shape "person"5 y- M. V0 k! w8 F" ^
setxy random-xcor random-ycor' n: e- r% U5 _% T+ S0 |  ^* N
set trade-record-one []% R; G* ?0 l4 j* v6 Y' E$ B/ M4 L

9 f; S" A) q$ I2 U/ U* e: C/ Yset trade-record-all n-values people [(list (? + 1) 0 0)] ; n4 |9 g- P7 J' _( n
9 C0 K6 P! S: b. s8 C) t5 [0 F  B& _( G
set trade-record-current []6 W2 \- t* J% O( ]0 i3 Y
set credibility-receive []' i7 v* F2 W( ]9 Q2 R9 S
set local-reputation 0.5. x) Q. u/ e' q5 u; y( H
set neighbor-total 0
  \7 v: [4 V4 U3 t7 K  j7 u* i# Tset trade-times-total 0
8 k9 ?, v3 g3 B0 D- rset trade-money-total 0
4 {0 `' C8 x% w, s. _set customer nobody3 {$ C/ l8 o1 R8 L1 Q& r6 r
set credibility-all n-values people [creat-credibility]+ m: z( n# q+ J' y/ [6 i! w
set credibility n-values people [-1]
! W. @: g& ~, q" k) a1 Oget-color3 E5 X: ?# b. B5 F
' Z. U8 t- J: H. A/ @
end
& ^2 `0 J6 b  s( Q' v: n0 m5 W. a. r7 Y7 a* l
to-report creat-credibility
9 c# Q6 P* ]$ y; A7 L' J. mreport n-values people [0.5]+ b4 |3 H4 l0 q( B& b
end
5 Q5 l  }( q  t) h( |8 x& r* i/ V: q8 H0 K# O3 O# A) S
to setup-plots, R" C3 y: d: L; j
! m) h8 |* u( P/ n
set xmax 30

7 L" @! @4 v5 J# G9 O- w$ H. q/ E: |0 {6 L+ B
set ymax 1.0

8 f) ]+ V* Y; _, J! u* ]
3 z+ L  t. A, P2 L: U) |2 Tclear-all-plots

6 g2 V1 Z' }0 I3 |  S
$ Q; X/ X; x, X# y# xsetup-plot1
* h# R) w# v3 J- r

# X1 A8 L9 l" j1 P; Hsetup-plot2
5 n' Q/ _% A) w$ d& d) X" k
9 W4 _' ^  V7 s: V- h
setup-plot3
& G( \7 T4 H# d
end( `- i' f+ A: G4 i) r/ ^9 t2 |: Q0 D
- Z8 c/ B6 j, I: j% W
;;run time procedures
8 [. e2 f9 a$ P  b
# C6 q# |. Q+ t8 l1 R# Kto go2 D. K' I4 O! D
0 f3 l1 k# e3 C; w- o' P3 s
ask turtles [do-business]

1 w# `' z8 u; O* p. ~# L7 zend
- j6 {% X  X1 ]3 v( |" a  Y, @
to do-business
" V; h- F5 G. a* z* _( o; t) W
6 C6 S4 Z  D9 N& _

0 y0 X2 Z: A3 ~% Srt random 360
; A/ d8 J6 u7 r: G. x3 U

  o4 {. Y7 R- c; B2 u9 x" Nfd 1

. P. T+ D2 I: J( g' V/ s9 r
; ]6 M% R8 Y7 U* C# S0 j. gifelse(other turtles-here != nobody)[

6 X) y. ?2 Y( u* `
2 Y  R0 X0 k# N! N* d5 v/ Oset customer one-of other turtles-here
& f8 ^2 J1 _+ y# h
8 I0 [4 ]5 Z9 o
;; set [customer] of customer myself
. u: |$ @2 E0 M3 P2 N9 L
, h9 h& S1 n" b7 c
set [trade-record-one] of self item (([who] of customer) - 1)
9 T! j: @: `  P[trade-record-all]of self
6 b* _/ L# w- W9 L2 X;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
7 X; ^* J1 S. @3 K$ _7 v
% X0 m. `9 G- O# |" a5 f
set [trade-record-one] of customer item (([who] of self) - 1)
& N, k9 H8 c8 W) L2 O. _[trade-record-all]of customer
, {. o& t  I1 @& v! E. w
( L. E5 Q$ P# ?
set [trade-record-one-len] of self length [trade-record-one] of self
) Y  C: P8 W5 O0 ?6 j
  O6 U' f- }3 r; ~" e
set trade-record-current( list (timer) (random money-upper-limit))
9 e9 S/ S  i3 w2 _

/ X1 V) H5 ~' H* g1 R  oask self [do-trust]
2 b4 M- Z4 `7 p8 H3 h;;
先求ij的信任度* D+ `8 D7 w3 M; h+ c
( n& U6 U1 I# d
if ([trust-ok] of self)
4 _8 l, J( h4 N8 B& B;;
根据ij的信任度来决定是否与j进行交易[
% [2 j- D* m& u! M6 C# p( E; hask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself6 O' L* t) e3 A; D8 O
. n' X4 \0 I, H$ j( c
[
9 K4 m! F: H% u- w( x- Y6 ?3 E2 d# P$ K
3 x& x2 |- y7 ]" b! a
do-trade

' d% s) B7 t: z4 Z" F7 L& `! K
; q) }' o1 T/ r; ?* T  U5 ]update-credibility-ijl

7 V( e. u, F+ ^! t7 y" k$ \$ ?7 g- g! l3 w2 s, @; l
update-credibility-list
# d2 l; G4 Z. X/ O' |! J; `5 W
" b$ }4 v* T/ @3 {0 x
. d' B( Z2 {1 m) v4 ?) Z/ t
update-global-reputation-list

8 {# c6 D! A* O, Y. e4 Z1 {( O' Q
& _. {/ X) G  }3 e* {; hpoll-class
4 }$ m' P& u3 V, K$ E8 W! ^) U- h

# o& U& ~* @% N; qget-color
9 d; j2 T$ K& y* w" F  f9 C

0 Q3 Q+ g7 @  E. B]]* o- W& a- ?/ I3 h+ v
& N# T9 q5 F- f* E. ?' \# k
;;
如果所得的信任度满足条件,则进行交易
$ [- a8 H. T6 ?$ _. J8 H, o: S
" E2 _- g$ K! g  T% k[
( X4 d' R" f* K3 V

7 v& A, w: s! brt random 360
: K, K  r6 ]! L

& r- f$ e, L4 S6 X) g( rfd 1

; L% l9 _% q3 x3 B# E% f. I" r0 a# k" X; v: O* `! o* D
]
$ f8 J  ^1 {$ C

. |( T. P( @  e4 K4 Send

! ~* ^5 P4 c+ g8 Z# D! h7 G* X& t6 K* y& }- p
to do-trust   A7 g) }' {% C; m% r  @
set trust-ok False4 c+ o4 Y) w% s2 z

( c6 ~- j5 H0 U& e

+ U8 h. Y' P$ _) y6 nlet max-trade-times 0
+ U( [6 {8 X, U3 Tforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
1 c; O) L5 p* s6 ^8 k4 n6 F3 Clet max-trade-money 0: p7 D# D  z! y2 H- d- h
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]7 f$ H" z+ N: e# D- |; i
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))/ G9 Y& p7 E7 O. [
: E" q  R5 n# e

2 H! s1 E! n3 f) {- Fget-global-proportion
2 Y. B; @: M4 d/ b; @/ e. ilet trust-value  ~7 W* k1 E5 ?$ ^
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)
3 i; r" b4 u0 \9 z, E& y- g
if(trust-value > trade-trust-value). j/ ~1 Z4 r9 N1 v. K! A1 C" l8 e
[set trust-ok true]
+ D3 _1 r/ q' T! U# t! X$ |! c5 uend# F6 ?( P& D% R1 p( q
/ f( g7 G/ J$ c$ K
to get-global-proportion% N  r: @; H" }8 j
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
& x" D  r! c& J- v" U[set global-proportion 0]* o+ E3 y( I# G+ n, q: g
[let i 0. ~  u+ ^" S% e  U) n
let sum-money 0
5 k6 l/ c  |5 v4 Q5 U+ i7 H5 Hwhile[ i < people]
7 n/ p! }+ Q& S7 R( ^5 i" ?[
* D* X( j' Z# J) i" b* P6 f/ T' Q8 Oif( length (item i. v+ q: d5 q/ v0 N
[trade-record-all] of customer) > 3 )
* S$ }2 K% V8 b1 s8 D3 Z* W+ @
[
8 K  w5 k$ B  R! uset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
% @& I4 i* n* `' x: a  r* O- t]7 N' ?- `3 \% b; w1 y
]
6 [  h" ?- n1 A0 G3 \+ ?  olet j 0
/ c0 H  J9 a! E# @let note 0
5 I8 }' `! p$ q! A7 K0 N5 T# Zwhile[ j < people]! h9 H0 j' m+ T* H/ i
[
6 R$ |- v( K! ^) f0 d* [) tif( length (item i4 r) B. [0 q: c* M& y, Z% K0 m6 S
[trade-record-all] of customer) > 3 )
: H' X8 `& U% b! N- q
[' Q: D, ~- Y$ u9 @; {
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)8 p. k! o2 Y' T* A3 x$ `' ~# }
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
& q! o+ ?, w4 f% o7 I* t2 \' t[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
1 I$ m# p" V' m3 u0 L- b& k1 x' C]* T' ]5 e% ^* L. R) G
]0 F( A; x2 S" b9 C. U0 _, x. d/ j" S
set global-proportion note
) C9 _: ~3 Z# p/ S7 O. P0 p, U]
/ Q! ^2 v7 t. m( v% u% ?( Q  ?4 b+ cend
* t4 X7 Q. V3 G" t  [5 d; J
% h9 A( D: @1 Y0 Cto do-trade
5 U, a% O' r% z" L7 \;;
这个过程实际上是给双方作出评价的过程, A% H& z, H7 ~4 F; Y3 X
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
- l( u( z' _% `3 S# jset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
4 j. K$ a2 M: s+ nset trade-record-current lput(timer) trade-record-current
( E3 d: `8 U" h% [( }3 ];;
评价时间, T) t4 W2 }$ ^( P7 X( C5 ~: H9 z
ask myself [
0 I# g& B6 Z$ |' Z- H5 tupdate-local-reputation
2 M) f1 s. B3 c' V& Sset trade-record-current lput([local-reputation] of myself) trade-record-current
* c6 e1 t6 v2 |& ]/ d]& w; T' U! R) M
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself8 q- g1 C7 ]/ H( G- m" Z9 |
;;
将此次交易的记录加入到trade-record-one6 q6 y7 r" h* l+ H6 ]# z3 U- g' J
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
0 t/ ^! t0 j  rlet note (item 2 trade-record-current )/ Z  \% B1 f$ N. ]4 \' p
set trade-record-current3 ^3 }: R5 L, v* B
(replace-item 2 trade-record-current (item 3 trade-record-current))

7 G) C9 m: {2 Xset trade-record-current
2 K7 C! ~0 e7 n* B* }  m) K+ J(replace-item 3 trade-record-current note)8 i% M- Z5 j) l% m
: |. ~7 g' \$ N3 Z! u1 q
$ L; u4 L8 Y. r0 L2 @% u& K
ask customer [2 }8 q. P3 |, [- c$ d+ d; T& r! Z% A
update-local-reputation
: k, B$ s* V# F& ~3 `set trade-record-current0 u; x) M! t; U
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
- F; `: d( b4 M7 J. M
]4 R7 n1 n" x2 h

8 ~) d! H8 D: a+ {6 h& k$ s" t
" J6 d. ~( K( _! f+ F3 @# T
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer- ?3 n: a6 t! k( n* D! r

* m4 W# H9 M0 k3 K0 Rset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
6 Q, u  G* D4 W. q; E, m+ E2 N;;
将此次交易的记录加入到customertrade-record-all! ?& |7 m4 v* ^2 g
end
0 q1 O* S: s1 u8 K% x% z/ l# ?0 e  _' q/ l
to update-local-reputation
+ }  v- ?$ P7 L# ]$ y# a4 Bset [trade-record-one-len] of myself length [trade-record-one] of myself8 Y% u2 S# g. f8 D( B# l

. H! u  |% z5 Y, D: H/ A$ B4 C+ c% ]* V. d
;;if [trade-record-one-len] of myself > 3
+ m, P* T1 O5 ^; D1 Y
update-neighbor-total( h2 a+ ?3 c5 X. r
;;
更新邻居节点的数目,在此进行# }$ g% q% o9 b; z. f/ H6 G7 S
let i 3
- |# u# S+ E& D# [let sum-time 02 I) o9 q8 k4 @- z  f  P; w
while[i < [trade-record-one-len] of myself]. Q7 \; k3 ]4 l6 k
[
  }/ D+ P% @' [' N) h4 dset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ); D% W: f7 t; J5 r! ^! a; ^
set i4 ^' e1 x$ M2 X3 Y, K" m+ k
( i + 1)
* M! g( F9 C2 L* N8 f
]
% d( e- v" X5 S7 u( }* p0 {let j 3
  G, J% x) Y: n9 |& V! |let sum-money 0
8 m7 @7 e1 M1 c: G( L; D% [while[j < [trade-record-one-len] of myself]
+ S5 [# W3 s% d0 g$ Q7 w. h[
# Q: L/ E' a. d9 z) bset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)( O0 b% Q3 k9 a4 c1 w9 Z( A  D
set j" U9 P; z% M/ G, z$ M4 K2 b
( j + 1)

% ]& H5 z- @7 m6 ~) I$ w: [& P  e7 ^]; [' L8 ^; E  u  w
let k 3
3 N; u- f$ E* s9 \let power 08 h! x: h! |0 z8 d) {( K! g5 p
let local 0
% M9 W% }/ j. {* Zwhile [k <[trade-record-one-len] of myself]
/ d  q+ |! f# S[! y  [! n9 D( ?7 z5 U1 V4 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)
+ v  l" u' K2 m" j. T0 ?+ Sset k (k + 1)& S/ Q" W" A+ S. |4 ?2 z) E
]4 d5 j/ q& C  `) P- F
set [local-reputation] of myself (local)' Z( P" z, ]3 L: }; |
end1 I! c; \% T" \2 ]' Y# Q4 w

5 x0 U7 [! L/ S" U2 ?# Q! o' Tto update-neighbor-total4 U5 a+ [. Y& K3 x) a3 `, C

2 b; F0 ~4 {+ U+ zif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
% X4 p" U; R) p- w+ h& j8 e* t- U) e. K4 C3 ?. N+ ^

) E5 x; {6 D: Pend
9 _' f+ I8 R, S' G: r$ f' J; T. N6 o+ e: R  d* Y$ W. }- P
to update-credibility-ijl ) f, ?, X' E7 p- K- B3 b, H& R
$ ~4 b3 C# W+ U8 b! ]% 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。* x/ f* Y8 O$ H# M9 O. U
let l 0
* Z+ O0 Q7 U4 S2 ?! lwhile[ l < people ]
6 y8 c! |; e. o) d: g8 E, c7 s+ o6 q;;
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
7 b/ R  C/ j( `! w# H6 |[
* f3 K  X/ c& Mlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)* c, t: d, I7 `6 z
if (trade-record-one-j-l-len > 3)
1 m" u, O# H; E[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-one1 j% l2 e, E$ K3 |8 Y
let i 3* r: e! |- t2 R! |& f; u! B
let sum-time 0* A. _4 s% C. u  R5 h& E7 B
while[i < trade-record-one-len]2 f7 r" y; ]+ H) B$ D6 Z7 O0 w
[
7 T* |3 x7 K0 k0 B) qset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
" s, _; W* J* \7 ~set i! }$ l7 v8 u7 g; F6 Z! _' R2 e* l3 t$ s
( i + 1)
, G; _" H$ a/ G, k% C$ C
]
$ ]2 M8 n  F0 C- _% l; Slet credibility-i-j-l 0
, V8 Y1 b$ Y1 h; W' e% V;;i
评价(jjl的评价)% S8 q- Z" B) V$ ~
let j 3+ v# O  E) c0 `  @) Y
let k 4
$ k% B7 s' C. Ywhile[j < trade-record-one-len]
# k! B+ a7 r. O* {7 c[
8 C5 k, U5 V  R- \6 Z$ v! xwhile [((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
& V3 B0 ]; |' M1 uset 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)+ I8 {) h1 P5 T4 p) {& y
set j% K9 F& i! p+ S+ r- m
( j + 1)

( T) L/ v- O' B1 T. W" `" c7 g], |9 x" _; I" |: N2 V# S
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 ))
  k2 P, H$ h% x6 n2 V; J4 _; P/ G, R3 E) ]) \

  s# W' b  }0 T3 r1 k$ elet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))+ x. W; F6 S. x
;;
及时更新il的评价质量的评价
! b- {: ^& _: aset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]# e4 X* x9 ~6 S: t2 s
set l (l + 1)* v, j$ x# D4 y5 q$ X0 A
]! K! V$ v  J  I; Q
end# c4 f. D* L; F% U! `; X

; ?# i, `! x$ Hto update-credibility-list3 d1 I$ ?3 A1 T- ^! ~) @
let i 05 R+ T; G4 N9 L( h7 B9 Y
while[i < people]
( F, A5 m5 k, V; l0 m3 C" V% k[
2 ~+ `5 k! {+ q/ a, Tlet j 0$ e7 E* q# D1 X6 L
let note 01 U7 @1 A' S: J; D/ a" x
let k 04 C4 P) n( o4 K0 v% c
;;
计作出过评价的邻居节点的数目
5 z% ]1 ^6 N% d& ?7 M0 w8 bwhile[j < people]
3 `2 a/ e+ K- Y- o2 F3 B[
% w* |: n2 m4 R3 [# aif (item j( [credibility] of turtle (i + 1)) != -1): G+ d9 k  `' X; A& X1 c
;;
判断是否给本turtle的评价质量做出过评价的节点& L* o, S. P; J- v+ x: O) W5 B  n
[set note (note + item j ([credibility]of turtle (i + 1)))
1 C/ |3 j% x7 b;;*(exp (-(people - 2)))/(people - 2))]

: t, F) U3 h8 E* p! Fset k (k + 1)
6 e5 a" i1 Z6 I% |+ n. N3 O]0 Y: m; e+ K3 P9 \3 Z1 K
set j (j + 1)
/ F! g5 p( Y1 Z]0 w" w6 K8 ~$ X2 E7 c% @& m
set note (note *(exp (- (1 / k)))/ k)1 O8 w) J5 [: ~0 ~3 I3 f- Y
set credibility-list (replace-item i credibility-list note)6 u* D* }8 o4 j3 Z
set i (i + 1)
) w: T2 T2 K& o& Z2 w]0 \* e3 [( \( z8 w' H7 X' r
end
% U% _/ H! F; s1 q5 b7 u
" |2 t; D4 d& A7 E1 q- n9 Ato update-global-reputation-list
! b& }8 Z3 h, Q4 k, w1 Flet j 0& V, C. b- B; @/ L! _! l" a- }
while[j < people]2 U0 @4 w% \* @5 g+ e! _- a2 F
[3 {5 @9 w8 j$ n* e/ ]
let new 01 a% Q$ W( I* T
;;
暂存新的一个全局声誉1 r6 q+ ^5 u, e+ h5 W
let i 0
. L1 `* K& _% ]3 [9 P- r1 S" {8 Mlet sum-money 0* [* A6 ?+ O* Y; I
let credibility-money 0
+ e. z' D& w# B- e3 r' _6 e  uwhile [i < people]
% W8 z: k( y" N7 B6 Y9 @" L[" W% ~$ c. S5 o4 @% |
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
* X6 R' C+ ?2 ]2 b- w, o. ]9 J' ~set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))* \; j; ?1 m" D' o! ?2 W* p
set i (i + 1)6 O% m% m6 a1 z0 w# Z7 W9 x
]  [5 @1 @  ^/ x. |6 r
let k 0
2 U3 R% m8 y2 ?" a  X  Y3 Vlet new1 0
$ l4 M/ h5 _- w7 ?/ Qwhile [k < people]
/ c1 W& X* C& i; H+ g[; t9 r3 C$ _7 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)
+ Y" c3 N. \( c! t7 Jset k (k + 1): F9 t* H6 T( o* Q7 L
]
1 `% }) i# F7 V3 bset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 2 P; t. J! I, }+ Q' z# }
set global-reputation-list (replace-item j global-reputation-list new)( ~' k! T; }; x9 |2 P3 R
set j (j + 1)
3 m7 @$ f4 r4 C! G" a' r8 Y]
1 t9 t, ?- \$ j  x' cend' u6 Z# e! t6 g/ |

; B2 a8 q1 h- }, G4 K. _/ r6 P- j) O8 q

. b1 z* S* |# Q% w$ Sto get-color
0 g) L$ V5 L0 p: R& G1 \
1 w% a" ?! u7 r, Tset color blue
; `- n  l- R2 ?  n# n1 k; |
end
' u5 X# F( E+ s5 l. Z4 @2 B2 w* `$ Q4 }" {9 G8 b) S& X; y
to poll-class" Z8 n$ q9 w' |0 `5 D6 U0 p
end
; f9 j  `9 K1 B4 i7 F. C# c
9 E/ i9 O, \/ L4 s+ ?2 V2 mto setup-plot1- [3 E3 b* J  N3 }/ R

4 n/ X' |8 R4 g* pset-current-plot "Trends-of-Local-reputation"
6 q! |( n$ g" N# W* M5 Q8 U
$ p# Y, D6 s8 r6 O
set-plot-x-range 0 xmax

( `  z% E5 ?" M- R; ?) I3 g+ G9 h' ?
set-plot-y-range 0.0 ymax

- J! O8 R8 x5 `7 L9 dend
* x- g+ ^/ B! c1 b9 y' l, v" V/ w3 n2 [
to setup-plot2: q) Z1 B! V9 h. X

. t& \3 F8 ~0 C$ Fset-current-plot "Trends-of-global-reputation"
$ M6 U; m5 }" M. e7 v
- L' `# _9 e2 C8 i8 Z, E4 k
set-plot-x-range 0 xmax

% a5 n  v) p" r# s5 d
' f: H2 I6 a. G3 vset-plot-y-range 0.0 ymax
/ w& N. y$ Y3 |. c5 T' e
end: p; C( _, p! Y4 }# p& K
1 e! }! I  ~2 Q8 o( L! y
to setup-plot3
( V+ Y0 Z3 I8 R2 ~/ c
7 P) E0 b( a+ D$ T+ lset-current-plot "Trends-of-credibility"
+ s& x2 [1 c$ D$ W% q" p1 g% X

9 x. u) @/ H1 {- iset-plot-x-range 0 xmax

% s1 [# w8 E& d4 s/ s0 h, C) v' _1 S+ z- E, j  x
set-plot-y-range 0.0 ymax
6 p0 Y; U) Q8 ~& J( h1 S3 g
end% P9 p" I. b9 L: k4 |! h

7 g7 u9 P. s. t7 k, A8 r5 f( ]8 Bto do-plots( E- a% n) k6 D: Z
set-current-plot "Trends-of-Local-reputation"0 w, t0 m3 Y9 h7 e  N) O  I! H
set-current-plot-pen "Honest service"
6 m3 e: Y2 a7 G5 M* I7 k8 Send& d: E) j5 ?0 H9 u" [
# [; \5 ?  Y* d7 O# h2 \$ l, Q
[ 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.
, \5 n+ \4 s$ j+ k
3 i$ o7 w$ y  ^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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