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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:
/ O  Y0 a1 ^/ A: Y$ [% \, Sto do-business ; n5 `, d* s8 b( Q5 A8 `% C
rt random 360
+ _6 z+ U5 c. u( z1 L+ _" Y fd 1
9 Y* G+ N3 x  ^  I1 ~: U; { ifelse(other turtles-here != nobody)[
3 u* o9 K) e' V2 D   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.
) @7 w0 p/ K: Y, I6 Y   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
* K% M( C1 L' c+ y: k   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer$ r, s; o+ G# P' D8 V8 j2 m- O
   set [trade-record-one-len] of self length [trade-record-one] of self  m2 I! C- j" l4 p
   set trade-record-current( list (timer) (random money-upper-limit))7 |; r8 J3 x  `5 u1 r6 T& j

+ U# [! Y% u8 i% M5 N问题的提示如下:- y" d( [, z1 x* ]; f% W

: q8 x! J) P0 W! D% j, y  S) P; Z+ F+ Gerror while turtle 50 running OF in procedure DO-BUSINESS
* \3 z; N: j+ E2 I  called by procedure GO4 D0 F5 h" k! w2 {
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
  y# V9 H+ c: U2 |
(halted running of go)# z1 e6 H% D7 k9 L8 ^

# ~6 I0 Q# t- B4 `$ G% c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~~
8 o; i- I  M% P/ q' U" _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
/ \3 l+ E/ v% U8 I8 \7 E8 Gglobals[5 b5 E: b. l5 B- ~( l  T* h+ u# M/ |
xmax% Q/ j2 r) E" H9 P0 N/ e" @, U
ymax
6 Q- K5 N/ v. J: {0 Kglobal-reputation-list
- P8 m* {! t% m: u8 r9 X6 e, j, W/ w. X- N- @* d, D$ d
;;
每一个turtle的全局声誉都存在此LIST
7 W/ b8 f1 P3 D+ Y  V/ E' ocredibility-list) V" F, [* `4 g8 a. _3 o, Z
;;
每一个turtle的评价可信度
( {/ E$ |7 N+ ]; i9 t2 {honest-service9 m8 j1 `5 p) K9 k
unhonest-service. E. ^- @( G6 p6 |9 D% X3 ?: D# k$ D
oscillation
* a5 H' t' b5 y! B7 V+ i9 crand-dynamic! j8 E* N' G. h! y, }1 G+ H; j/ u+ i
]3 D8 @& h0 [. }' F& J# `" n

% i& W; H! K( N3 hturtles-own[
* p. s: M, a' p" htrade-record-all
* H$ }+ z7 Y4 N) p& a  [5 b) q;;a list of lists,
trade-record-one组成
: m6 H; v4 y, jtrade-record-one8 ~& S1 t+ j6 Q* e) J: d" j
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录+ G6 H2 t0 e" I5 ^+ l" C9 T& o9 Y1 A

7 q% f9 A6 _( u! c% f;;[
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]]  S) F- E1 j' i3 S+ r  M5 F2 W
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]
& O1 B  |) M9 w6 Ocredibility-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
. i. P0 m$ K9 [4 r* }5 xneighbor-total% r+ h$ p) o- x4 M
;;
记录该turtle的邻居节点的数目
( |. m9 s& C: l5 xtrade-time
3 S+ Q5 a1 V5 G+ F8 I# O;;
当前发生交易的turtle的交易时间
7 O# |3 d; [1 w4 f+ S+ |- b/ sappraise-give: E* K2 I! _# r) q& T
;;
当前发生交易时给出的评价; F7 \, v6 A3 a; G) U- e1 _
appraise-receive
6 e2 \* _% o) f, M2 Y7 m;;
当前发生交易时收到的评价
$ h; q0 }, f& f: `appraise-time8 ?2 V) k! Y9 o# L) }0 c
;;
当前发生交易时的评价时间
! F8 N8 R5 D9 Z, {local-reputation-now;;此次交易后相对于对方turtle的局部声誉
( [3 q. v" ]& ]0 G' |trade-times-total3 L5 c+ m7 L( l9 P' s5 z: Z- a
;;
与当前turtle的交易总次数
" l" J: v5 `1 V& ?' F3 atrade-money-total
/ B6 A9 x$ i4 J) W/ {;;
与当前turtle的交易总金额9 X7 B( @  j. l5 F; x% }& t* Q
local-reputation9 I7 Y$ c1 u# `* Y9 j
global-reputation' _2 l! v4 b. W$ X* F/ g
credibility3 W: }! m8 c  ]2 ~) j5 E
;;
评价可信度,每次交易后都需要更新
3 G2 z8 T4 \6 p$ v& C' K* Rcredibility-all
1 Y1 Z# N7 k2 |1 G$ K% t;;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  Y) ?. q5 q5 R; ~6 c0 P, j9 P( c

  P) ^* E- J' 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! }9 k# B9 U4 b# d+ S
credibility-one
% h# m& @8 ]( T. ?) k3 W0 @# 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, G# M" Y" N3 Y3 l
global-proportion, a% Z- x& H, }
customer
) Q( e! Q$ P* U$ _9 b( Scustomer-no" m) Y) l7 e5 L. [$ ~& _
trust-ok
6 S; x5 F( ?& m: e3 ltrade-record-one-len;;trade-record-one的长度
2 c. s8 [# {5 l$ H$ m]1 N, V; d0 G. O/ g& }: V0 C3 M, S
4 U4 j5 |* S8 w" M+ b% z. h
;;setup procedure7 p3 i) @4 D* ?( e; F- M
4 z3 [% e$ J& N9 U# K
to setup
. c- f( E+ V5 O% m3 c1 @: a8 D! r$ G1 J7 b, ~0 G  E! P9 `2 p) U) U% c
ca
+ q  S% s8 K  H6 M8 l/ _
: D$ N& v# g" x8 ]( f# I* e. U; b
initialize-settings
7 }$ D. F8 Z- U- d4 Y. f: Z4 T+ S4 }
! H. @6 k" ]  K# s
crt people [setup-turtles]
6 A! P' `; b; J9 A% l; e5 d

7 Z2 N! F6 T) ]2 areset-timer
' E: X$ |; Z) }  g( R- M
1 {1 C/ A9 u7 ^& k
poll-class

9 L  S, W, [, N; F8 w& }& C; L" o7 x% H$ m" {0 r3 O3 Y  q- R# A
setup-plots

! H7 Z5 }) H) ?3 p
; Y: n# S1 W+ v4 R, ?9 T0 fdo-plots

, _# S1 ^! b/ a5 Hend
$ Q& p$ c6 V6 \  j
$ ^3 q* c2 C5 \/ Y+ Zto initialize-settings1 F5 ], r6 Q9 s+ q1 u% U
1 c! I% I2 B9 z
set global-reputation-list []

9 f4 e/ |: O: j" t
& f! x" r  s. L- O9 ^set credibility-list n-values people [0.5]
; U* E# E) S* o( n, t! O! s

; N9 Y5 C9 E5 K/ _set honest-service 0

  ]: x- [/ `9 Q) L4 h% F  u. k: ]. H4 l5 q* u) E! P2 Z4 g
set unhonest-service 0
! o( C( Q$ i% D: q" q; e

8 I4 X' g' T4 }# [# D% `) q! vset oscillation 0

; Y% q$ R8 K5 h* O2 E! \) f, y& Y6 b: n# |; A3 ^
set rand-dynamic 0
8 P9 Q8 Z1 i) e) S: i, v
end
% _& L' m( p, w" D5 t" ~9 g- N$ x' ~4 o5 y
to setup-turtles ' J9 i# @$ [  @, }4 d3 c
set shape "person"8 i0 S) Y0 [3 j  I( }* q8 f
setxy random-xcor random-ycor
0 _' w4 g  F" E4 G, t2 n' `set trade-record-one []
8 Y8 w, S; A! ?% w  `% `
5 b" a1 ~2 }5 X$ F, [9 D1 n
set trade-record-all n-values people [(list (? + 1) 0 0)]
% K- k4 \% ~9 r' f' f/ x9 b) Q( F
6 H! Q. Z( r0 u7 {& i
set trade-record-current []
. z; _  g: H* Gset credibility-receive []
) ]( Q1 U! X( U: `! dset local-reputation 0.5; l7 O2 [) D& E$ `
set neighbor-total 04 |* _! ~' [# o. ?1 o6 C
set trade-times-total 07 M4 d: x! h! Q$ q/ u
set trade-money-total 0
2 Q! @0 ?7 O/ Rset customer nobody
& a2 n1 S) h* ?& {- O' M+ K# Mset credibility-all n-values people [creat-credibility]
; w" [/ G  j/ B) e# xset credibility n-values people [-1]; ~" x3 e- n* B
get-color; X, ~0 X! H0 a$ U4 ]/ f
& q. Q- f. p) d# `6 L3 f8 h
end
' B5 u- W1 h+ B6 S. j. R5 |' _: J3 t6 z3 v9 z
to-report creat-credibility
) |+ `' W3 D1 G9 B  p0 creport n-values people [0.5]
, q6 G' x: O0 L$ z! tend
) ~) x9 n4 e# s- m4 Q5 P' S( i, d/ B$ m, A1 l1 Z( W2 P1 k
to setup-plots
% p: U/ N9 I3 c2 T+ ^
2 n) H* @4 R$ S( bset xmax 30

, `$ ]1 e! ]+ |! m! `  D
/ a. P' T7 Q* r0 f" I3 t# ]set ymax 1.0

* H# @1 \2 @' _5 q, E, m% U, q2 ]  P6 t1 z: m
clear-all-plots
# G# R  \( P. R: c+ y6 Y, y  I2 ?6 \

5 L# j! M& K. O' ?  u2 W0 u6 T# xsetup-plot1
$ Y9 W" D, w$ J) ]4 B

* P9 h3 u6 P8 A& m$ ~0 fsetup-plot2
$ |  ?. X1 o0 c3 @1 [; n
9 K2 \4 H. a+ Y
setup-plot3
: N  ~' B9 S* e( M
end& D3 A* g7 q+ F7 q8 s  U5 u- D

: l8 l. D* N! ?, X- E3 ?;;run time procedures1 t; [! v) G7 u. j! v
% B$ S* a: ~5 Q' }3 N, V7 j
to go
! N; s/ Q3 u9 |+ R; Z- X
2 t1 e+ c( {, E: {: _$ n0 g7 Task turtles [do-business]

( M/ n0 D7 \5 aend
: |. R/ p# W: M( i# U' X' R. R" R# L7 p
to do-business . v8 u2 B! `- A
- `2 Q: [) G/ I% G/ M( @
' Y6 L( o: O6 N8 G& p3 i
rt random 360

/ q9 ~. x8 t7 `8 b) E% H( `5 I9 V8 ^, h( x" Y7 J
fd 1

% b" E, ^( x+ _* t3 B
2 G* F. C  m8 h+ G9 T+ Eifelse(other turtles-here != nobody)[

8 {4 ]5 o5 \7 q- T4 j6 ]
& O6 ]1 y9 e/ `8 h2 @" R2 R6 Eset customer one-of other turtles-here

5 ?2 u3 ?1 n$ h! A* ^. g7 g  W9 J1 Z+ u$ x5 L/ e( d
;; set [customer] of customer myself
& m) k7 u# {/ a! X) U: B! K
. T7 B% d; \" P% t
set [trade-record-one] of self item (([who] of customer) - 1)
' d( a4 G+ c& W0 f  T, y5 M7 R[trade-record-all]of self' C" [( v0 u6 j( Z7 r2 y7 x# V
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
" s3 Y1 v7 f3 ?, o" Y+ f

+ u" U- _' l) E5 tset [trade-record-one] of customer item (([who] of self) - 1)% z$ J" p: b; B! W
[trade-record-all]of customer

+ x3 t) I2 W" }, d
" E2 l) r) S1 e) m& N* L$ F4 Uset [trade-record-one-len] of self length [trade-record-one] of self
' b- k9 H  T. _% B' n
" E5 z& d  U4 J: O, S2 K# q: ~
set trade-record-current( list (timer) (random money-upper-limit))

1 g0 u( S/ v  f. o! D* P6 m" I1 \1 C$ E1 k; w' a
ask self [do-trust]/ T  W3 Q) W. t$ S
;;
先求ij的信任度
" ]) q" D7 ?( z& ~: V, W+ F- R# l
if ([trust-ok] of self). u1 ^. @  i4 J( U1 \# V7 W
;;
根据ij的信任度来决定是否与j进行交易[+ i4 ]6 Q0 U* B! }6 T
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself( w5 a  W! x' n+ @5 y* W

; A* u8 |/ ]3 ^: R[

- C; y. ~# c2 ]: u/ E  N1 K5 N! Q& O4 Y8 \2 R" X8 i0 t
do-trade

/ u8 o) F9 ^) h( x% r" ?, [' K4 U" n( q" e1 f; K4 Q1 |& {6 w! R
update-credibility-ijl
- F4 h' n: X5 F% W- ]. C" `# {
2 W! x% K  h: ?) w6 ?8 v) t( u# z
update-credibility-list
7 S" R5 e! t5 z5 |( ^

* c6 \9 }1 w7 d7 B) L1 V' I( }2 f/ s  [) p' f9 M. p+ b" r6 J- q8 m
update-global-reputation-list
0 u0 c  q9 T+ o) o7 f

. P) C: N  p6 T3 `+ b, B+ Spoll-class
; P' w& {6 o- a4 M% e

! A6 Z7 k' {& s" O0 K& Rget-color
+ F/ u) T6 Y0 V/ o4 [

" o+ F, x! k% `/ L; a1 k]]0 r, C1 ~- o& h
8 a* }7 r, S- [! j+ ]% A  k
;;
如果所得的信任度满足条件,则进行交易
4 e0 k# i) X6 Y" j1 }9 k, [0 d, o$ A& |/ V( b( W) X
[

* O7 s& s0 M! D
- \& u. @' \- k8 Srt random 360

; E. P2 E2 r1 ]7 X2 w  @# I! X& L9 V) q, j; _5 I8 k! n, I2 K
fd 1
$ G; d/ @  ~$ V& D

# i1 Q- _/ `. g5 `# \, [4 ?]
( V# \2 b! l; \* e1 Z  Y& X/ i

+ t$ t: L6 b/ A8 Hend

3 w* x' h3 @+ A8 c+ K! k
- A6 x! R; r5 z6 b" n; l; Ato do-trust
: v9 Y. W+ c# S0 g7 \set trust-ok False
7 A+ |1 }& D: j5 ?! T+ i6 E/ X, p4 B" s- P; @

( p6 g. K! e& A/ slet max-trade-times 0
1 B4 [9 b0 B( m& ?2 yforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
1 G3 ~6 i: q; Y8 g& Jlet max-trade-money 0
1 C! I' i4 F7 J& W+ Fforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
: Z5 Q& s; S" K+ Z# ~2 S7 blet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))' |! S2 x  Y/ s1 `* m  b; g* ^2 V
! c# k. m) Q% X3 W* v$ ]' v  \
+ L4 p2 g: b. X5 H9 s
get-global-proportion
: p# x/ l) |" d! y* X; u: ^let trust-value
+ @4 u) e' Z0 P- C+ T" c" l- m+ Ylocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

/ w& m/ T/ S- Y/ H3 v4 j! Eif(trust-value > trade-trust-value)
' U5 y0 u( j9 e) l- K' I) U[set trust-ok true]
0 ?& q- E  t( }- ]( M: u: qend
+ O3 d" v0 X4 `) X8 l' e9 `/ [, h6 ]- a# F" P( q* ?" {
to get-global-proportion" V  H+ [( c" U9 J+ H$ n& b
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
9 N/ g, W4 u2 i- ]- h' P. |8 u6 ][set global-proportion 0]
" K+ l! G9 q( P% T, M/ f' z[let i 0
! m: x1 |3 u5 f# s2 `) L& b  v8 ~) @, Elet sum-money 0& k' ^+ l& l5 i8 m, G
while[ i < people]
: C, ^1 U/ V8 ?8 P0 n9 A[
$ k6 W8 C7 v; G; K* b- c  cif( length (item i
1 ]( R) A0 X/ _2 Y3 R! V[trade-record-all] of customer) > 3 )

3 F' l0 t8 o5 t" k[
" s$ L+ @; [5 D0 w& t* Oset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
" P  F; k, _* n; W( U7 c]+ g2 M) N/ `' y( T" T8 R# J
]
# D" U2 \2 ~, v1 W& y+ olet j 0
2 m, F5 l' _: d- F, H4 H. [let note 00 r9 Y- a5 g2 T# g7 |  F$ `5 a
while[ j < people], S% Y6 |$ @+ R' u1 s9 E' R
[
" z5 M7 [- L1 m2 c  i/ @if( length (item i* ~) `) e2 u' |2 J$ b* U; d
[trade-record-all] of customer) > 3 )
+ c8 a+ q7 c# c' L1 f5 h* w- L
[
5 w5 M5 m3 c$ k4 i0 ~ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)3 J8 d- z$ T. \3 r2 [* ^2 I
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
% k: z# \7 q" o5 }[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
* M' X% N1 }( W7 z! o& c( U, y]. d: m; q( V, r% f8 T
]
( @# M: _7 ^' C" Vset global-proportion note  R$ Y7 O2 p% U
]% T* a! l+ X- k6 w. I9 g0 H3 N
end
: j3 |- n$ m5 D( P' n
1 C" p6 ]" W/ C: h  p4 U2 Ito do-trade
+ ?1 D! x; b5 c/ ^: c2 q;;
这个过程实际上是给双方作出评价的过程' b( e9 ^+ C$ j# Z  j' X
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
6 i" R+ R8 \: I' Rset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价3 X/ x3 H0 p) e" @4 ?: S  w
set trade-record-current lput(timer) trade-record-current) S( f# }1 }: @5 j3 y6 w/ w
;;
评价时间
! @" g% v- f0 s" dask myself [
2 G$ w0 U* Y! iupdate-local-reputation
8 v1 l2 y. h, W1 i( X+ @% k& G+ _set trade-record-current lput([local-reputation] of myself) trade-record-current4 {& t) |' |( q1 N
]  H, s' k: r% Q2 i( x1 |
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself" V9 S" i4 B& j1 ~  @
;;
将此次交易的记录加入到trade-record-one  [& e/ x' ~4 J, i$ n
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
9 x$ |, d# ^5 e/ M' \let note (item 2 trade-record-current )" p9 t# U7 l8 L! M9 W; `
set trade-record-current
4 g- i$ |( w, S) r" ]: b; O2 b/ r(replace-item 2 trade-record-current (item 3 trade-record-current))

' H4 V$ U2 i& e0 Tset trade-record-current$ I% d! m* H' ]; ?
(replace-item 3 trade-record-current note)6 d4 q5 g0 X- K- R' w

6 u6 |  @" I" \  S& f
+ v. W* M# E  E' ]  \1 Y' T
ask customer [
$ l! A! t6 T5 Cupdate-local-reputation
3 C) m, T0 y" T1 Z& s, yset trade-record-current
0 t/ s, |% o5 q4 X" S: B(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

6 B8 G# F+ @' J9 s& Z]. K* v8 I" r( g  `4 I( R! A

: s. S+ X- S& n1 K, a

* T/ p- u3 ^) Z" a( @' _! Sset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
  D+ r2 z# E' a1 `5 L# {& v5 q
* V# _- j" c" s( z5 l
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))# f3 }  Z3 M# V8 i+ M% j; `
;;
将此次交易的记录加入到customertrade-record-all
8 Y; ^( W. Z9 j/ D$ uend' c. t0 K  v/ c

9 x; Q0 x# A- H  B$ S: a5 p2 kto update-local-reputation
1 K% j- A# P1 ]% C0 O) q; n+ q- Kset [trade-record-one-len] of myself length [trade-record-one] of myself
- u+ e/ L2 U% p- V* N0 ?8 Z* b% L( \1 x' e% I' b

6 n. z5 R6 o. l: }: p; r7 ~;;if [trade-record-one-len] of myself > 3

, {* \. D* H; c7 Q5 oupdate-neighbor-total
9 R% y% w' c- g;;
更新邻居节点的数目,在此进行% `) A! v3 S9 \$ x
let i 3
- |, l4 l1 K$ Qlet sum-time 0
7 s5 E( o+ W3 i! I5 Q3 |while[i < [trade-record-one-len] of myself]% T2 a- F$ I  Z& D
[! @! n- ~+ e8 F" R# h  _
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
4 m+ Q* I' ]% L$ pset i
8 B/ K7 m+ Q1 r( i + 1)
% u9 M9 p: K3 j, t
]4 g( }$ W0 v/ p$ m, t  L7 W3 A/ [
let j 3
6 ]8 W- u5 L* x) ]5 Y# s3 d4 ylet sum-money 0  z( C4 z/ j  s1 f
while[j < [trade-record-one-len] of myself]
5 h" d4 {3 Q9 V- f[2 {2 J0 X- n9 {. |* b$ S( S" w. v
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)4 [7 {+ }( U% Z/ r2 g
set j; T2 H+ ?1 ~9 e2 S$ i4 D; ?9 `
( j + 1)

2 `* U( T5 |/ }+ H3 |( s; i* ~]- O( }- ]/ g3 o' e4 n1 q
let k 36 o# O: l& L2 ^( r+ U5 }
let power 0
  y7 q; J$ M0 }3 |let local 07 m  g* n8 c- ^( k/ u7 H
while [k <[trade-record-one-len] of myself]
) _: c' u, ^: r2 |2 u4 |[
( M/ C4 }% ?) F6 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) $ `& v' b8 {$ F0 ~  o0 i* t
set k (k + 1)4 s% O. C- |2 B! W
]( L8 {4 e: E+ N3 h
set [local-reputation] of myself (local)
' S2 [, c2 j! l$ s5 O. L( aend
* d6 C( B" N5 f
  H4 O, l, |: x9 I6 c* r- q$ xto update-neighbor-total
0 \) @* x' ^" P3 p9 \/ N
. `; F! u: A* k/ v  X. }if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
7 R6 K7 S% @* \# P( Q& }! G
* z7 C2 I( Y' }! N! T7 r& Q) \* R
( k2 Y1 u3 ^) h$ o0 u' ]
end
4 s! ], d% Y# T5 a* O( N! ]" l3 L; R7 l6 g2 ~. q
to update-credibility-ijl
6 C! I# G% y" A3 S
( _# ^( I: J/ F( };;
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。
; O' e9 j' y' [2 \let l 0" \: G2 \2 k/ ~$ v( c" W1 a+ z
while[ l < people ]5 R' s9 L/ O( Y  \
;;
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6 J2 s' ~7 y0 E# Y' t' p
[* O& I; {9 `" M7 b6 f2 [( p
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)* D7 s% c+ @) v: q; u9 Z7 h: c3 J& y; i
if (trade-record-one-j-l-len > 3). h9 [9 t6 L4 }7 V* \
[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! _' y3 [6 b+ `* W  q$ j6 o) ?
let i 3
1 k; Z. y/ H' s  O9 s- olet sum-time 0
9 Z" y! U4 |% F9 Fwhile[i < trade-record-one-len]* Q$ K0 r9 f+ q: |' B
[+ Q) n" c( C! H2 Q  U( L
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
1 }1 `* \+ @& N* @set i
9 ]3 |: j6 q5 F7 l- R# ?# v& T  V( i + 1)
0 }3 ~2 `8 Y2 Z3 ]9 u: y& `
]6 R. m. J: c6 P: i& M3 Y3 t
let credibility-i-j-l 0
! H% l1 v$ v0 k& f* u9 _;;i
评价(jjl的评价)6 o6 k- E2 g; d1 y1 M' y+ j
let j 3  r* Q$ e8 Y* v- g0 o1 {
let k 4* ?8 l5 f" P# T/ K8 Y6 M( q* i% T
while[j < trade-record-one-len]
1 ^- U2 y/ ^) g# n; `, `2 r4 P[' W# @! A* R: G, x* m* E
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! x: U0 b8 a& t; D6 `6 [
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)
. H! o8 ]: ]# fset j
7 d/ F& [7 _7 d% z7 ~$ _  `& o( j + 1)
4 N, Q" U6 Y# z
]
# c8 M* D+ J; l- ^) e. M1 Sset [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 ))- D' i8 }1 |/ q
! U4 K3 G/ h; ~9 T: M8 ]  ~

% J1 I* T/ T+ b) k' e, @- Olet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))3 R2 P7 Z9 c6 G  p% z
;;
及时更新il的评价质量的评价9 H0 F. L2 i  Z+ B/ V  p% O
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]" P- K4 r/ w# K: D
set l (l + 1)6 v. U- i$ d" P# {! U# [3 _7 V0 ^2 ?9 n
]
+ \1 k' g' K  q% {+ k+ xend* H  G1 _$ C# Y; N

0 d$ C7 c# Y% ^7 p8 w- `5 ~/ Pto update-credibility-list
8 o9 D: J/ z1 y& e; \- J( Ilet i 0
, s; l4 U+ R) V5 Wwhile[i < people]6 \8 }' L5 ?% Z- R* B6 l
[1 [: ^3 i' U  o4 b0 [
let j 00 |  [8 \3 o# `2 o- E
let note 0
9 T' l9 o9 p5 P* N( c( Slet k 08 {2 {; s8 e& O3 e
;;
计作出过评价的邻居节点的数目
% w$ L  m7 M' x. s( Twhile[j < people]' q& y1 H& d' ^; W+ [0 B
[! Y3 A4 e0 Z2 o8 L
if (item j( [credibility] of turtle (i + 1)) != -1)
& X7 R* v7 K2 G. i1 T! j7 Z;;
判断是否给本turtle的评价质量做出过评价的节点
8 c! C, Q3 D- f* U[set note (note + item j ([credibility]of turtle (i + 1)))
& {7 L  Y6 c5 M5 G( ~$ ^6 H;;*(exp (-(people - 2)))/(people - 2))]

9 _3 ~; `- p1 C! O3 `! s6 _7 Fset k (k + 1)4 O" q( N" _6 \% M1 x
]+ G6 Q& n& `  n1 c" p% Q+ G* R
set j (j + 1)" }$ @  C7 v: N" G) r
]
9 J( k2 X9 Q$ c7 N; _set note (note *(exp (- (1 / k)))/ k)
" ~3 M6 L3 b" T5 p: r; H9 rset credibility-list (replace-item i credibility-list note)6 m4 G" y" Q8 e& R
set i (i + 1)
. d! N  j5 y! V]
# L' E' r) t4 ?! j- a, y( t# Aend
8 G0 P' E$ [  w, g; {+ s) H" j" r: z( j. O; S
to update-global-reputation-list; D5 S4 F. L& Q* n1 {# v
let j 0
) w; |! V2 Y( X8 U# w+ v) Kwhile[j < people]! V. ]) ]8 T3 Q" J6 F. j. L! E6 q
[
0 j8 ^" I$ x1 f$ T  @4 rlet new 0! V7 d( e8 f4 n) X
;;
暂存新的一个全局声誉9 X0 v' ~; z( `4 Z
let i 04 g9 [; g: E  y* Y7 ^( ~7 G
let sum-money 0% ?$ s6 b1 p+ L" k
let credibility-money 0: X# D1 _, x% p7 C  _7 @9 Z
while [i < people]( f& }" W8 Q2 b8 N% n
[6 I8 F* J2 _5 k+ _
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
5 l, K0 t  O  \2 `" Sset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))( ^. q8 B6 s. j$ V% }2 F
set i (i + 1)' u9 H% L( a1 m% Y( g- {2 Y' w
]
% |. J4 P' r$ }; }* Nlet k 0
7 `6 S, u& e1 w" @. [let new1 0
5 ~0 p! |* @# Y- e! d/ z' [while [k < people]
& ^7 ^- @% a! n+ f1 x) _[8 @* a  ^0 m; y+ Z6 \. B
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). a7 p9 \1 r( H
set k (k + 1): Z, D% \, z0 u& r& w9 a
]
( w6 S6 K" B& g6 eset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
9 s& _  L! o) A+ r4 E' m2 mset global-reputation-list (replace-item j global-reputation-list new)0 S  R/ g8 V* L" K. V. W2 T
set j (j + 1)& H: H7 E! K, X
]" L1 L7 r0 }# E  U' x; \
end" ?. y8 F$ v- n8 B" ?

* {) ]6 m; s1 q* I/ D- H; Q
3 V* L4 a5 r8 A/ ^) [( z5 H. ~, }
; M+ V. B/ {6 K9 tto get-color
# _$ z" n" h. O; a1 p/ F
) s+ i/ w( s1 [: v' C+ ]set color blue

$ {/ r0 w2 f( V$ b. Kend/ Q4 g& f, t, s; d6 c/ Q; ]

7 K- D6 z9 M4 G5 v6 cto poll-class
4 K; q" e5 g; Q- c$ D  \9 Aend/ ^! e" {; v$ r- K0 Y( d) l( m
+ B( G* ?8 A9 ^) @2 J5 K4 H) v  m
to setup-plot1# X; @& m0 X& B
  @( h9 q5 h+ K; f* a7 K* D( `
set-current-plot "Trends-of-Local-reputation"

) [6 ]! I( X5 |3 X! e0 X* e( ^8 r3 |) W& v7 ?5 i  W
set-plot-x-range 0 xmax
! s; i7 a# u8 ^6 Z( G, O* |

7 y4 u/ L, A4 |, t0 wset-plot-y-range 0.0 ymax

; n6 v) O: W* r. X8 I: cend5 J; m, }/ C* B1 f/ \, G

9 s, ~* C6 N+ V0 Q( T; Dto setup-plot2, M/ K8 K, N) m0 x- b
# K7 v" J! U% s4 T
set-current-plot "Trends-of-global-reputation"

' h3 E1 m' i& G- ~9 R9 \- x  w1 X+ i# l/ D
set-plot-x-range 0 xmax
0 Z2 S- @8 W6 s0 Q( z& t& W8 k. i
; T+ |4 I( q+ r% n0 r% a
set-plot-y-range 0.0 ymax

6 y1 D9 T9 K2 F  ^0 F7 P. ^: oend5 p- P# @' L% ]% c# z
: i; ?3 o4 H% D- V9 W& S
to setup-plot3
2 E7 R/ u  b/ F' k7 R% [
9 O1 V8 R; e( Q7 O7 V+ H2 X. Yset-current-plot "Trends-of-credibility"

2 e  O7 @* Z! L- `
: _  A- F1 c5 q1 B) vset-plot-x-range 0 xmax
8 ?7 }' ?' E+ _, ^! V$ P5 C
/ J9 U, a- Q+ M& g& e
set-plot-y-range 0.0 ymax
8 r5 u6 W2 C# {( P& K0 W
end
. P  L6 ?/ ^2 }( a% p
9 Y9 [- @8 D0 bto do-plots
, g7 z7 A1 p5 m9 ^0 K# Jset-current-plot "Trends-of-Local-reputation", u8 y3 p1 t0 T$ o# y
set-current-plot-pen "Honest service"9 d8 d3 e' |- i
end
" {4 u* B0 u) U3 [# }, l! }4 U0 P/ f0 c  t( R, f
[ 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.9 c  W5 P. W" p1 _

: @' j3 s/ ^/ D* C6 u6 w" @6 A$ 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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