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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( ]% ~4 q; bto do-business
# G( L  ?/ F2 Z0 M  S rt random 360
& |; |& n( p. e2 k5 N! Q- c fd 1- P# O7 |' k; k; B3 h) `8 S
ifelse(other turtles-here != nobody)[
9 m" Y+ {* a6 X! P% c   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.- T7 ~: k6 f: L0 E  z5 q5 S1 H: H
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    2 j, K8 Q2 @4 ~3 T5 m% r1 G  a
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
7 }9 I+ S6 s4 s# D9 H8 |* G   set [trade-record-one-len] of self length [trade-record-one] of self$ D8 G1 u8 ~, `. ^- q" {
   set trade-record-current( list (timer) (random money-upper-limit))
- A8 e/ G8 V" i7 g
  C0 ?. z3 D  `. E8 W2 @' l问题的提示如下:" z: a5 F# w1 \6 E6 p: o

$ x5 k6 t% B2 w2 V6 Verror while turtle 50 running OF in procedure DO-BUSINESS; O  k# `2 J; }. O7 |' {1 b- B
  called by procedure GO
0 n2 C: J3 C3 I' B0 e6 c. OOF expected input to be a turtle agentset or turtle but got NOBODY instead.& w! Z) e) B8 P: ]
(halted running of go)
% E2 ^# Q9 f# M' A2 v: Y' B; F) f: A
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~~
# v5 y0 w: r; `- T! M/ e$ E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
1 D1 ?7 Y' i+ _globals[
7 h7 k- q1 o: R) f; C, dxmax5 T' H, U6 c! B  Y. H, f
ymax
' U1 Q- C# o) M% p7 G" `. Z1 qglobal-reputation-list8 X+ F$ L5 ^4 |1 l) Z8 D; r, |0 `
4 Q2 @7 n6 b/ f5 v9 c3 O% t4 m
;;
每一个turtle的全局声誉都存在此LIST
+ G  W! d- `4 m) ecredibility-list* z8 l3 K! A8 {
;;
每一个turtle的评价可信度
% W9 P9 c/ t; `" Z. V3 [8 \honest-service
+ t8 ~, W" u6 G7 H) e4 c' dunhonest-service
! ]& l3 m( S( yoscillation
  ?, A2 P" m+ G5 Prand-dynamic
7 H  B6 `$ \0 ~2 I/ ]]. e( \/ Z3 D  q7 {: Q6 i
1 t+ c9 G( U. I8 O/ E- ?3 z! [2 ^  z! h$ l
turtles-own[
8 p. W# h$ Y7 C$ Y! atrade-record-all
; `+ E, l. a8 Q2 k0 e3 \;;a list of lists,
trade-record-one组成' O% B. h. f) t4 V  m5 K- |% O
trade-record-one, P  s% y' R0 A* N4 i2 ]. }, d0 ?
;;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; |) A+ b/ q1 X
: p7 H, E1 U7 v
;;[
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]]
' l3 C0 h+ d  T& l/ etrade-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]
1 x5 }( K6 v9 S/ Y- D' n; g0 _, Y. Mcredibility-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) n5 s6 h. q/ P/ S4 p1 K6 V9 a. W: g
neighbor-total% t6 J! O6 v' [
;;
记录该turtle的邻居节点的数目) }- q4 ?) O+ _, q: u, c
trade-time% i8 h' d1 Z" m8 N
;;
当前发生交易的turtle的交易时间
) ]; ]- \9 j& R/ L- ^. Happraise-give* S# S; u$ l: j# U7 q
;;
当前发生交易时给出的评价
6 q9 J" o4 C) d. j& e5 Z& Tappraise-receive2 |9 b1 D  F4 X3 D
;;
当前发生交易时收到的评价8 D6 q' Z% T. }, L: R* d& B2 b
appraise-time3 J9 V- W! h8 j! M) @0 s
;;
当前发生交易时的评价时间
( @& x* o4 P, u2 `/ ^2 b3 Dlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉- K( d2 ]( b6 [2 h/ Z% h
trade-times-total
* @( H& V2 r- u; c! a3 S0 ^;;
与当前turtle的交易总次数6 n* G) h# Y+ p5 L9 q
trade-money-total6 e- B' u9 ?; g& p
;;
与当前turtle的交易总金额
$ @/ Q: T0 S4 n) O" Elocal-reputation
" j0 d- Q4 G* S+ m. s2 P) u2 Zglobal-reputation$ Z' H8 r* r+ K) H: T" U
credibility
( z5 k) O9 g9 W0 p: m" X;;
评价可信度,每次交易后都需要更新
' b  E( V) ]7 a1 Vcredibility-all
4 m0 M) ~  j3 x! Y% {. T$ B;;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) L3 b# Z/ U3 Z2 s4 F
- C9 b6 W/ b2 M* v4 ]- i8 Q
;;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 Z) t$ t' M# L; b& x9 Ncredibility-one
& {% Z- O/ L; H% U2 E8 m;;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
& A$ E4 p/ U/ v: t( Sglobal-proportion
7 I% t$ E* d  d% Dcustomer- l4 R1 n$ w2 d  r" p" g
customer-no2 o& g" M+ P$ h* P
trust-ok
& S/ i/ ~$ q# Y8 L8 }% K( mtrade-record-one-len;;trade-record-one的长度  S9 r. U: z) V, F2 H5 P
]- g/ _8 A' K% v: b
5 ?8 ?+ R0 h# v" ^% F
;;setup procedure5 Q2 P8 c% r  s/ f5 K4 {! `
1 q) s8 X- o; L) X( [2 u2 H. u
to setup
1 X% c4 c( v" J1 E/ Q3 Q# W7 V/ a  t5 W, p% I4 |) ?% a% b
ca
! a: ~) x* ^3 e2 K3 c  T* [% H
* X* h' d4 p" g9 L2 s; i+ y3 b& W
initialize-settings
) \+ H# `$ U  G4 g$ B$ m3 e. c# A( S

7 A4 l* P- t  V0 ycrt people [setup-turtles]
' F; ~  L1 f7 m+ U+ W: r

5 v) ?8 v0 `! s/ D( |6 [reset-timer
' G, u8 `7 K. I' `7 r9 B
' Z8 ]5 m# o8 @8 u& y. U6 s
poll-class

8 c5 w+ ^5 R( e* K" i# z
4 |& B% B: F# t: m$ u/ y" V: Ssetup-plots
; \' a$ T. R& b9 M0 N+ f) h
; }! z# K, p* T& h: W5 y
do-plots
1 ~; B$ I+ K2 ~
end( T8 S7 I1 g0 r  T& W
5 L$ u& N' L4 O# W
to initialize-settings1 e& ~" u/ \; K* m
$ t9 \4 v2 I& N1 \, w' I& t: T; {
set global-reputation-list []

5 v3 @8 H, j: K# d, Z! q5 `
; o% y) r5 g1 c$ h6 E, Rset credibility-list n-values people [0.5]
( |4 ^% |% V7 d  y8 W- d$ y1 T

: B* w. J0 N1 ^6 N0 P) q, V$ I& ^* Tset honest-service 0

& C) j6 Y3 E' k! L
( Y% T' ~( ?# b8 Z, v2 ~  W* pset unhonest-service 0
  H& x# z" A, K
! _& I+ P- `4 d
set oscillation 0
) P0 ]0 g" l! n2 U# V- [* E5 j
& G1 W. L4 p& a( d* L
set rand-dynamic 0

: V5 |# t6 {* Uend
, j4 h% m8 w& L( I- Z, T
5 O: J: T( o6 R- H+ ~( U) gto setup-turtles
) ^9 N9 R$ q1 L5 oset shape "person"1 a! M. \* Z5 t$ ~
setxy random-xcor random-ycor
" m! h* A+ K& D& mset trade-record-one []' W0 u. p  C8 C5 z0 |

+ p, p$ Z) T9 d2 g0 x  @9 zset trade-record-all n-values people [(list (? + 1) 0 0)] & X5 C* {) R9 J3 Y$ e

% a6 o1 D. }8 h& y; |: E. V0 H$ X8 Zset trade-record-current []
/ N. ~2 j6 I8 S9 y2 ^3 _& e. K0 `set credibility-receive []" R: W5 W- o7 j
set local-reputation 0.5' @" _  |' n3 G0 ]& I
set neighbor-total 01 P2 U- S! W8 A
set trade-times-total 0* B# |7 |1 o: i5 p2 S, M% x
set trade-money-total 0
, |4 P, ~2 g* g( i3 ^) aset customer nobody/ s: H0 d8 L% y8 v* Q8 w
set credibility-all n-values people [creat-credibility]
3 ~; I0 @1 c& r: ?( `: Z( d: i/ Rset credibility n-values people [-1]
; e2 G4 C. |9 S9 x+ [! b% Mget-color
' X" ]0 K; y7 J
& r5 {7 @& z3 B/ _, q. y" `
end; B( V. C2 c5 {4 E$ g- {( j
: q+ c7 ^6 y% {* E
to-report creat-credibility0 Z- i6 l7 c0 ?$ B
report n-values people [0.5]( X1 A4 F& a) E
end
/ B+ o7 a% N. G8 z" `1 N4 P: r  ~) S& p% t9 W
to setup-plots  e; Y8 }3 X  R% {, P; E
7 Q. Q) D' [7 G: A* V
set xmax 30
7 U8 i2 _# q; ^. ^/ O% I  \
1 H& e' A5 g4 r0 ^' |
set ymax 1.0

, s6 ]- _! ?; R; J: y1 V  x% Q5 W; \  q& D
clear-all-plots

, j$ Y" ^4 B; V7 e# S- s: Y' u( V6 i* P' p7 p- z. T7 Q
setup-plot1
4 {9 \1 I+ a7 `4 v- _

# A4 \' d! Q+ k& I, y: F. A: S8 Asetup-plot2
- B; W* N) `( u6 Z, B6 z, u: |4 E. p

) z- F0 Y, H4 ]. C6 Y! I4 Zsetup-plot3
4 t) V0 z3 K; I( l0 B. A
end
* S+ [3 t0 [# H4 \2 l( I* f1 U/ r3 x
% D' s5 L# I& Z/ R4 ~$ j;;run time procedures
* m* ]" o5 H8 z7 P/ i- \0 g
, m" p! g# \9 Q/ fto go# N+ h, |+ u) a6 c$ `/ |
5 o0 ?) d3 m! x8 q  i, s5 X8 j
ask turtles [do-business]

2 l& f2 w, K: T5 nend
& _9 {, N9 ^& J  r7 P0 q% v
. W; h4 Y& ~6 s3 Nto do-business 5 e" o+ C8 U/ Y- {  I  |
( [0 C/ n! [1 x
$ k, L- m) V2 j, i; f( l, M
rt random 360

8 D1 C, B; E: |) i) b7 P8 Y- v0 ]! l  w* q% W6 F0 E: x3 V
fd 1

2 O3 m3 P* d& L; q: f' v: v' E* [9 q1 P5 U# @  a1 u
ifelse(other turtles-here != nobody)[

6 P, q: z6 {4 ~5 m* D1 X  R8 w2 s, Y2 q" w- u0 E0 M. J9 c1 u
set customer one-of other turtles-here
3 @. C  Y% T. b, {
6 @% K+ Q& ?3 {1 {# b1 i$ h
;; set [customer] of customer myself

, e7 q# M" P8 I: ^+ n# [
; G5 R; g8 t2 o0 a6 [set [trade-record-one] of self item (([who] of customer) - 1)# T3 f; P* w4 h
[trade-record-all]of self4 o9 ^1 h! F6 d2 _
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

* b2 p/ t  f; K! a) Z: c6 ?# G: G
set [trade-record-one] of customer item (([who] of self) - 1)
. R& ^: r) j2 f) ^[trade-record-all]of customer

: p2 R# B4 T2 \+ n* ?
" ]$ s4 G+ o0 p! A7 aset [trade-record-one-len] of self length [trade-record-one] of self
( U  F; p& E0 c# O/ a  _
. C' X% O  V, B
set trade-record-current( list (timer) (random money-upper-limit))
/ U2 b. {  h- P( a. n3 X

! F4 O$ d* X7 O, z/ ?- kask self [do-trust]5 R# I; h  p5 ^* ?% w
;;
先求ij的信任度8 t' @, i5 |% Y) f7 f* {4 u
+ n6 G7 G# g  ~9 P$ ^# A& Y
if ([trust-ok] of self)! k2 ]/ v; l- e6 t2 o& h0 S" h8 ^6 w
;;
根据ij的信任度来决定是否与j进行交易[
3 L0 q2 F% ]  u+ T& i+ p9 Q$ |* P% v+ ]ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
  L3 B! _& z* y; _5 K& ?! \# t! C6 |) s1 _
[
1 J5 k/ d- b1 _9 c( k; q; y
" P' G( n  X0 V
do-trade
" Y. P1 K, f/ N' w
# B4 e' q# Y# x: h& V; a
update-credibility-ijl

4 _' u- c, m; B/ f+ w
2 N  y+ n/ o' ?4 @4 Iupdate-credibility-list
' a  ^& p6 m5 B3 j; M
# ]( I* ]$ w/ \: C) S
0 C$ `9 D$ D/ Z
update-global-reputation-list
3 ]  J6 w6 e8 p$ K8 D- j9 _+ C, U

8 h( Z8 d+ i0 T: Npoll-class
6 K- e: c0 n; C1 J0 c9 `# Z6 a. S4 ^" j
, a9 b8 W  @- L7 n# x
get-color

0 L/ F0 I0 A' W$ g. q2 p/ e6 v$ f3 T- i
]]9 S) u7 @8 {! V0 m% d
+ H% T% f/ d- t" J& \1 r3 }9 b' ]
;;
如果所得的信任度满足条件,则进行交易0 e+ U- P, {& ]. `; t# i

2 g, b0 a+ Z1 e; z5 y' D4 f" e, {[
7 D. A2 v$ w2 l* H+ F+ H

3 O  L0 ^& z" g+ [! ^$ Y  z7 grt random 360

/ X+ Q! {3 m8 X  D. o: O" ^$ l! b  h* u! B: w  R
fd 1
# K+ U- g. C, K# N  h3 U% k
- v& C! ~$ J' ^- t2 A$ D+ Z
]

/ ^/ ], O; K8 C. f+ W( W4 M- R$ ?, i7 u) @& E
end

5 b: T/ i; _9 W2 a1 l) M$ l9 d- O1 w6 V5 @
to do-trust
1 Y* J& {9 s% R5 b1 W2 \/ D6 Sset trust-ok False
# D. o/ u9 O, A7 ^+ O- x& v8 L
. ?1 U" l8 S9 g8 v! r: u$ ~# c' X

5 Z6 J& J) u) h3 z& C* v, y4 Klet max-trade-times 0" p( p* \/ h- Q9 v. `0 i" a
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]! G  Z8 q& R% i! I8 H1 k/ U0 }
let max-trade-money 0. a+ r0 `5 s6 c1 ], Q& V
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]4 i8 j9 M: }; r: R3 s0 u( O8 |
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))0 |2 A( o/ r; K1 B- T" i9 l

4 K" A$ U( ]' ^; }* W# \, o$ f: ~

" k1 d+ G) {' r! {7 vget-global-proportion. _$ |9 i8 x! y3 r/ }& m
let trust-value; v- E6 g" l- C
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)
1 n" [! s) t" t
if(trust-value > trade-trust-value)" ?# A) H$ g! j5 i. s0 N
[set trust-ok true]
9 [! `4 q- F* t& b7 l, k0 kend. }5 U! k+ B) y0 @. P  h( S" ]

$ k6 Z9 a' K) t. ato get-global-proportion4 T* N& n+ I, _! x
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)# y- L) j% Q2 j1 q$ @2 G
[set global-proportion 0]
( Q6 Z2 A( }5 P2 I$ P, y% l7 x[let i 0
1 q0 Z8 n8 y! b- `( u' S4 olet sum-money 0
' G2 Q6 @* j7 n8 d5 K+ h# @9 c" \while[ i < people]
' H  `5 q/ k" z8 y[
" ]6 y, G! l# \7 @if( length (item i
+ \& ?  w  y7 M" a: X/ X[trade-record-all] of customer) > 3 )
, u6 v* h6 O1 D# a0 C- ~2 ~6 i" c
[
5 C' N) c* R0 v/ }+ l* D: _/ F9 qset sum-money (sum-money + item 2(item i [trade-record-all] of myself))6 Q5 J* Y8 B  |$ U8 H( V/ q9 b
]
+ S8 m8 s  |5 k7 C" b]
0 i( R  ~+ W5 L5 Q% vlet j 09 N, L% y5 f7 z9 W0 v5 T
let note 06 `" B( M' s& v& U# V
while[ j < people]
8 t0 O1 I0 N; j* U5 N7 N0 N9 O[
: Y% g" r/ D- A; O# Y. xif( length (item i
, E% K7 L  m" Z* F- ^, h[trade-record-all] of customer) > 3 )

5 ?9 i5 V3 R! ?1 G2 ?0 {/ ]  @[1 J1 N1 {, J. o6 ?
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1): x5 g9 V0 f# R# H- \7 \' F8 f, F2 F
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
/ P8 a" @& d1 l; x3 z[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]6 M1 z7 Q: u/ P6 r) g8 @
]
) Z. w# h# L% G5 a- U]7 U3 E  J8 ]  v, ~5 P
set global-proportion note# N' S! v5 R# T6 K$ v3 d
]7 d& r3 F$ R0 E# C7 V  @7 q  g
end
: c5 T+ O$ T+ Q; L! Z, f7 J3 Y  S7 F
to do-trade! M! F( @2 Z8 g) p( [
;;
这个过程实际上是给双方作出评价的过程
1 O6 I0 a& k4 G8 P& Aset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价& o% @2 M3 l/ L: b
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
6 v/ M; c6 t% \: _set trade-record-current lput(timer) trade-record-current
/ \& _3 {" N2 @$ I, c3 `;;
评价时间
2 X! @9 H5 Q  j8 J' Z$ G" qask myself [5 ]* Z1 k* B: N
update-local-reputation% t$ _/ Z# G0 N" {
set trade-record-current lput([local-reputation] of myself) trade-record-current
- G3 I! I1 r$ ?- ]1 c]
' U2 g! w# t; i$ @$ K( Oset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
2 e$ l* R8 A! m& I) o1 L, t;;
将此次交易的记录加入到trade-record-one
/ ?) ]8 i  s% n9 @$ w* l' Uset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
/ ~0 V6 @$ j  glet note (item 2 trade-record-current )
2 X3 H9 |5 V1 _9 R7 Lset trade-record-current
( X: w% P* h3 B(replace-item 2 trade-record-current (item 3 trade-record-current))

* _+ p  e$ `- L$ e$ q4 I% P1 hset trade-record-current4 N6 A& T* Q" C7 y( X3 S: y, a
(replace-item 3 trade-record-current note)
7 U! {4 @: r  B$ [+ ?9 m4 @* f' f

2 B' ?& z" ?8 Z% j) Uask customer [2 R* `0 l# ~) d. q6 ]7 x; k
update-local-reputation; V1 h& s0 L+ ~# Y# @0 @
set trade-record-current" d: T$ W# D4 u1 p9 r
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

, m' {6 Y1 f' F% l: i% q8 F. p5 e7 Y]
6 b  i9 g; T2 p$ M0 F* W, U1 |6 D! P% |1 c6 S
4 o  i% J  l* Z1 o
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
; n/ L/ E9 U4 T( U
0 T4 n8 ]* O1 h9 x0 p
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
+ k6 o) n3 m4 D; s& j2 f% ]$ j6 V# h;;
将此次交易的记录加入到customertrade-record-all7 K3 {! ]9 i2 p% o4 |3 j
end7 E4 Q' O* x3 e6 s7 \  a
1 r$ a$ S) {; E5 r
to update-local-reputation$ \# q- Z, r% ^
set [trade-record-one-len] of myself length [trade-record-one] of myself4 Y' e/ D* a1 a! r% K

6 G* B- \/ Q; ?+ A
1 X3 r% s: ~3 d9 u' Z9 _. }% C;;if [trade-record-one-len] of myself > 3
& f6 i6 W) c! H2 O( f6 I9 T
update-neighbor-total
* n$ g( C9 D" |6 z4 i4 N;;
更新邻居节点的数目,在此进行0 U3 z& [+ d+ @: H8 |9 Y
let i 3/ Q# n. E" |; l( y
let sum-time 0
/ A4 q! @0 O) x! A1 h9 ]% zwhile[i < [trade-record-one-len] of myself]" q& C! _; l1 V
[
, q* l' f3 e8 X% Bset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )* P, R, g2 w1 Z2 d6 N1 \
set i* A2 u- N0 M# F  K1 o' y) N
( i + 1)
( a, b4 t; O/ L$ o# b6 ~* h) W8 D
]' \3 l1 \' L- v. C0 d$ h" z4 n
let j 3( B$ M7 `6 E0 |% t
let sum-money 0& H# v4 f8 F6 e
while[j < [trade-record-one-len] of myself]
" q4 W, W4 r( ^% Z, D9 e[# B. ^- b" _+ g, q; c# c6 Z
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)
0 {4 D+ {) B4 X7 o% zset j
) |, p# s/ G, C4 p0 r( j + 1)
9 Y" r. L' S6 p
]
# O; d9 t" [. O( h0 t' ?* ~. {let k 3
9 l6 |8 G6 c8 ], b4 ~let power 07 n' h' V0 ^' ^% ^/ ^, D
let local 0
7 }/ d, u# D* @4 ^2 S: _while [k <[trade-record-one-len] of myself]
6 V; `3 i* i1 d7 m7 b, h  F[
( P* b6 l( y& F' Fset 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)
' |% w% R$ f' ^* }# f7 oset k (k + 1)
7 i! I( t- s- B% v$ Z1 n$ X]" J; k" H  i; D/ M) Q" T" m
set [local-reputation] of myself (local)
6 T5 @% B* _6 S+ l" Zend
6 X6 A9 i- `" z- l7 C
7 H, D8 `( Z! V# @, B, `& P8 mto update-neighbor-total2 y* E8 ~- M0 r( T/ M
8 n0 |% K0 O% e7 t
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]4 Q3 p/ _+ B9 W% F0 o2 l) y) z

& i1 ^0 M: [9 x" J7 S

& N5 a5 H4 R: ?. |/ Mend& n- S+ G: L# z- k
$ ~" E: P  K( @+ S& b/ ]0 g
to update-credibility-ijl
! u* `1 p" \  J- c, h1 _' t0 t! L; c! j* F: d  B) g
;;
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。
8 @1 O8 }: \# H2 f' C; klet l 0& ?* }2 }+ P& l) z8 }& ~
while[ l < people ]
- O% O, [( r% C, O+ [4 ?5 W% n;;
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
; o- R' C. c3 t3 h[2 q+ W' G9 A$ Y+ ?; R
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
6 h( @  U+ R9 h. ~if (trade-record-one-j-l-len > 3)& M- L: X8 w- }* A8 J/ f0 U7 w
[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; u( M' F0 @6 @2 g' R
let i 3
/ F- r# a9 h* X6 n  N5 c  M( clet sum-time 0. }7 m: ?" B, e; W+ D5 T
while[i < trade-record-one-len]
" v6 k( ?5 o5 d[0 x4 e. ~: l5 Q9 w; j
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )9 \  P) }, R; S, C) j% P
set i
; q% z" y- {4 ?& M! P, N( i + 1)

# p% Y1 \" q: A; p" J. g]
2 K' w) e  h' J0 P1 w- A5 j8 Wlet credibility-i-j-l 0/ l: O/ R% k. c& _( R: T
;;i
评价(jjl的评价)
8 P' |4 W4 D1 ]1 Q: n3 T9 A0 |let j 3. H9 C+ I) a5 Q
let k 4
, o, u& n( T+ ?+ N) E( f8 _2 `while[j < trade-record-one-len]
: u& b3 y5 O+ B0 p[
- |: F1 a: x" h6 s/ D0 wwhile [((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
; P# S% f( Z5 C3 f+ H9 _. z" U6 g0 lset 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)( `* M6 B, O6 ^% A
set j
+ x! `- |1 c/ N7 a( j + 1)
6 n/ F6 N- S* }" n
]7 E( l. N  @/ q0 g- O3 ?- E9 Y: t5 p
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 )): d; T& @, T4 E7 A3 }$ K2 P
- m8 P% g2 [$ v. a0 x( s8 I

( b, g+ D$ c/ e0 Y- Rlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))- A, q. d- j$ y& D# _& Q# [
;;
及时更新il的评价质量的评价
, M' c" N% H) Y7 K8 t8 O1 v! oset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]& }0 Q4 H6 s2 `: u: J( D1 K5 S# t
set l (l + 1)
4 N! m9 M5 y, E* j9 _]5 t* H) y$ Z0 x" ?9 l0 P
end
0 _$ s3 ?* P  j; n4 I, r: g% J) c, C% P
to update-credibility-list0 ?6 q$ i, p" b" R! k* L
let i 0/ G+ D  C% D4 o4 I
while[i < people]+ `) ^5 J- |. Z
[$ F  x1 i* I$ S  i8 ^4 [
let j 0  d) H% R) [( Y& |
let note 0
, o* G* z4 D( L% _" |; w+ flet k 0: Q; K4 C. m! Q- ^3 K
;;
计作出过评价的邻居节点的数目
6 \" H7 I: p0 s& Ywhile[j < people]
9 I" B' q! l, M% C, L[3 y4 L1 E( D; ^( j7 v4 P; x9 T
if (item j( [credibility] of turtle (i + 1)) != -1)1 s& j, _* A- n( R3 y6 f
;;
判断是否给本turtle的评价质量做出过评价的节点: s) {3 o6 K: m$ }. [$ k" f
[set note (note + item j ([credibility]of turtle (i + 1)))
( C$ l# d  z# v+ K# A9 c" F;;*(exp (-(people - 2)))/(people - 2))]

  I( U  `; ^: xset k (k + 1)8 B1 w+ w+ ]/ E; g8 l0 B
]& k! {6 I7 ?3 j3 V- t' Z
set j (j + 1)+ s+ I0 @5 y7 ~* ?( g) z& X
]
+ N& K0 W  q8 b: w- E& Aset note (note *(exp (- (1 / k)))/ k), N; a1 J1 U1 L4 N
set credibility-list (replace-item i credibility-list note)
' h! ?) A; f6 I5 n5 r( U$ xset i (i + 1)
$ W4 y6 ]/ q# |]( |2 i, a+ E9 [1 C- T
end
) b; ~0 K! l( @( V7 h1 Z
5 @6 x' i. c# u6 Z- N/ o% uto update-global-reputation-list
5 N/ Y" i. t6 d4 c8 mlet j 0
( [: A  I$ l0 x7 q( k3 |while[j < people]
1 b% ^, F6 N6 ~5 i  `  R[
! b% e$ Q  {( c3 M  E8 |$ flet new 0
8 k1 k# H# e1 U7 _;;
暂存新的一个全局声誉3 ^% g+ u1 O" y
let i 0
' P6 K+ S, U( ^) X4 Z/ Olet sum-money 0
0 X9 ~* \& ?( ~# A! x* D, n6 \$ ]let credibility-money 0/ l. Y( j  w6 r, X9 |* Y( H+ ~1 t
while [i < people]
5 Q  N2 J$ s, I% u/ ^# t[
: I  Z4 V2 R* f: Y/ f# ], A* Kset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
/ K% j# i' W7 V- P* L; y1 s3 x, Lset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))% `6 D; A" M3 y  S
set i (i + 1): l1 ?1 g5 i! D8 u! N$ ^
]& n1 q& H0 d5 y) W4 C4 Z& c
let k 0) c  L  z( ?: t" _
let new1 0
' `+ ]7 `8 Y0 y5 [while [k < people]3 K9 ~9 }5 ^7 u- t9 y' q# O8 C
[
( f# o% h! _& V9 z( j5 x. Bset 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)/ A9 V. Y* }( i4 I2 H: }2 Z- J
set k (k + 1)% t3 ]* b/ c8 B
]& y0 M0 d* L) E6 x" |* ~7 r; g
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 8 u. S  C2 T9 L" {
set global-reputation-list (replace-item j global-reputation-list new)4 G7 A6 a8 g: e  ]# t
set j (j + 1); R+ @5 s1 j9 C$ x5 j8 n
]
1 O8 u. `5 b* F, b5 K! Y; dend0 Q* K7 @+ X& N9 T" l. b5 ]; m

, B( N/ W) o6 D8 a. N" l
! _1 z  U9 U0 O) [+ [) P
$ z% g3 A  n, Y* i! Eto get-color
! V' q" C6 w" E
9 |. R+ [0 l% j% Eset color blue
) e! _; n0 m1 H5 @* I
end
4 ~& Y) H* q$ K/ R' ]/ i! l# Z. k: Z: o) t
to poll-class
8 w; t+ r# N* m. E# Aend
8 [4 w( v/ V- J6 m2 q: F2 b  g' p$ C
to setup-plot1
  m9 c8 b! i* K
% q- p2 D& Y* ]( p0 `set-current-plot "Trends-of-Local-reputation"
4 p- A9 z) t$ c) K3 Q  B9 v

! c  Q: Z: e' m: T4 l: w8 ~set-plot-x-range 0 xmax

# P2 t- s- f. o+ L  {" Q
2 k( D3 A* l( O9 c+ B1 W" Zset-plot-y-range 0.0 ymax
7 w! ]2 W; K. Y. k, S2 G2 Z. Y$ S
end
9 y% r* c$ A( J+ \
* N8 A/ p: N" ?  F! eto setup-plot21 p" l# p2 H' Q* t8 h$ U
1 S/ Z9 V; X. C, `8 Z% G* V
set-current-plot "Trends-of-global-reputation"
( P2 ^! ~( c" D4 c8 h
0 m1 {6 B, X: @! l6 L
set-plot-x-range 0 xmax

9 P! j8 G: Y/ X
: O% S* B# r- p* }set-plot-y-range 0.0 ymax
! A: C# q; ?6 F2 `; ^
end
4 I9 T$ {' ?, o8 d* N5 ]) J3 H' w+ q8 C  i( S
to setup-plot3
/ O0 c5 _  r$ C4 w4 k: \9 G/ r4 K! O7 K% E, i1 V( j8 g
set-current-plot "Trends-of-credibility"
( M, w. M7 A  {- U
3 l. L( m6 D# d
set-plot-x-range 0 xmax

9 y" f: Y% x1 g6 B  G# R: ~( L+ x- K% J/ p+ i0 \
set-plot-y-range 0.0 ymax
" r" S5 Q( c1 h) {. b( \
end0 d# O% T4 l: a& t# Q1 w

8 k  ~1 }1 Y4 Z9 y! Y7 ]" d: a  q# Fto do-plots
8 p( l, A6 ^( wset-current-plot "Trends-of-Local-reputation"4 L  K4 i3 x1 U$ l3 X1 t( K4 H
set-current-plot-pen "Honest service"
# k8 J9 z3 E' U7 m2 Fend- [5 G$ {% ^3 s8 `5 b  L
# c# f1 G  a7 k- h; ~+ A
[ 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.& N! h1 f" m2 P  J/ o: r
3 X+ K, {; }4 C( K+ U0 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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