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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:; G' j2 e  e- r0 V4 g+ d
to do-business
: T0 X& h/ v/ ~ rt random 360
- A, ]6 Q- b; Y) i fd 1
/ S, A9 s$ Q3 U$ O, t, f2 z4 V ifelse(other turtles-here != nobody)[
" T& y% s: \' h8 }. {% F, s   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.
5 j. d/ z" F# P3 }, Y# R: W   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    3 ?# J) Y$ h: l  c3 q
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer1 y. h, F8 b4 @. U% A, j4 U
   set [trade-record-one-len] of self length [trade-record-one] of self
% `1 G5 I! O& B$ T; m9 {( `   set trade-record-current( list (timer) (random money-upper-limit))! f2 N% s, L1 R. w* A# {' |

& N8 ?1 y! J9 Y; `  X8 {问题的提示如下:
2 _; d" `5 Y3 b9 P; h- t( k$ k8 v* j: r8 ]! C. \
error while turtle 50 running OF in procedure DO-BUSINESS
% p. ^# q$ O( X1 {7 a  called by procedure GO% S' M7 `2 N5 O4 q" W" V
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
# n) w/ H% z- n7 ]
(halted running of go)! V' s$ h( k1 |7 P- a; |9 e- e8 \" O
! q" H) b  }# z( 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~~
. a! S: J7 }1 f+ y0 }' 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
. z5 r) j, r4 i4 h; u' R- R  pglobals[  u0 O# o6 p' L
xmax
2 ]: r' ~  |/ o' I8 p" Uymax: U) {" t( E2 L0 h4 Y' q
global-reputation-list, X; B5 C% `. q2 Q0 k

- Q" K4 x, n0 V/ h3 I* F  X& z, k) M5 a;;
每一个turtle的全局声誉都存在此LIST% W' `& q  z8 r2 Y) l
credibility-list+ t. k8 R8 U/ O6 m# @
;;
每一个turtle的评价可信度
1 I& e* C7 n. W4 ^8 ^. G8 Hhonest-service
0 O' ?# z  ]0 ~& Vunhonest-service
' G) }% a. R6 m* E! v4 e4 Woscillation8 |/ ?( s. N$ P1 S$ K
rand-dynamic
7 j; `. ^. B. K' m  u8 z. A& X]. t/ C) d# D- I1 D' _: j( t9 @7 V9 P

& i; W8 x8 W1 S  oturtles-own[
) Y1 t  R$ c. g; K, e: z  ftrade-record-all8 Y- O. t" @, E( n- c0 U
;;a list of lists,
trade-record-one组成
  F. ^" p) U8 k8 n/ Rtrade-record-one; Z& C+ d: V" l2 I/ @+ s
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录& b: u5 w+ [2 C9 {& B2 B! o# [& E

( I: z" n; S# F/ }( L6 J2 U6 c;;[
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]]" d% P( F7 H/ j# R
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]
# p2 n% o3 O5 r$ B. e+ W+ kcredibility-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* M2 _7 E5 _+ a' {5 v
neighbor-total) N- `; H+ B* j& _
;;
记录该turtle的邻居节点的数目
! o" N* l" ~' q( Q' i7 xtrade-time
0 C4 g: H- o8 Q4 z# s7 k% J7 }# ?;;
当前发生交易的turtle的交易时间+ y+ ~) [# Y4 N0 O. q
appraise-give& @: ?% a3 }: V" N
;;
当前发生交易时给出的评价
7 M  _/ X9 U! t$ kappraise-receive9 s8 H! m5 \, J
;;
当前发生交易时收到的评价& C' \* K9 p* h$ W
appraise-time/ q: a) z1 l, d3 i1 ]) K
;;
当前发生交易时的评价时间( t$ T( E, X) I" C
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
9 R1 h' H0 @4 i( R. ztrade-times-total. g$ Q, k8 m. ~$ O- D. _
;;
与当前turtle的交易总次数% h2 K3 }7 B* o! L' {. r
trade-money-total
! j! n! y! d- |# p! {3 f;;
与当前turtle的交易总金额
! l; _  A- }7 Q" \4 ]+ clocal-reputation
! W; R4 H8 Q! R( X* J$ [+ A- Uglobal-reputation
- S7 f; m4 _5 T2 o  F# Zcredibility) x3 k/ p' i3 t
;;
评价可信度,每次交易后都需要更新  T: _5 X% j: v9 F
credibility-all0 m  d! C+ M2 a: g2 m/ R* 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: {" P. n0 \) N

# l% I, s& S! o0 c;;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
, E  d/ U$ t% E9 v- \$ dcredibility-one* a$ F: V& _$ d5 N2 k" E
;;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 s! R' U2 R" q! ?( H5 W- bglobal-proportion
& ^( U- D* t2 |/ zcustomer
! }6 e$ [) U& ~! Acustomer-no/ K' _& h7 \6 ^
trust-ok# D3 {- z9 i. m/ N7 [5 V
trade-record-one-len;;trade-record-one的长度: E' ]0 z# l- f4 [5 \- M* z
]2 Q# M$ |; C0 H$ q$ Z$ q

7 w; G" Q( k, z. _& \;;setup procedure8 S8 q) s1 U( r+ V7 i

. F1 l: [  v& E- Eto setup
0 |5 p! @) |; A# J* ~; n- M" w$ x1 I- A  G" z# ]6 r. ]3 b
ca

# V, x$ W- [% @  a% Z" w+ C) K, Q
; ~1 n. h" u  x" u- R& }+ \0 ninitialize-settings
) A  D' A$ I. e- p( t3 J* G/ W
3 S+ a0 q: _) D9 a
crt people [setup-turtles]
* j9 J# i8 Q! b: R( ~, K5 D8 v
8 Y4 f  Y% w: B$ ^  u2 U
reset-timer

) h8 p# X) F9 V2 ]1 K$ Z
5 n# N9 X& D' q+ Y6 I3 n; ~poll-class
/ Z) J4 g9 W% c/ Y9 c' K
% b( S" k# s- y) L- s9 y
setup-plots
' |6 W- ]2 u8 T- s, y$ S/ g/ F
; a2 A5 h, t  B$ B% Z, o- M$ J
do-plots

$ x$ L' s7 e# |& Z% l1 b0 C; W, o" Jend, l( ?6 U. m  O) c  V9 y, B+ b
2 O- q% ^. Q% @5 v$ j1 d0 ~
to initialize-settings
4 g- B; w! j: L" G# z9 v, n. x0 ?
set global-reputation-list []
9 D, Q! v6 _7 }/ |

9 w" W2 B+ G5 l6 nset credibility-list n-values people [0.5]

1 J  t9 `  Y& Y& N3 t: d3 h. s+ R) I; `' i4 }7 y% u% {
set honest-service 0

* [2 R& X0 a/ N6 d, V0 {' c* w+ z
set unhonest-service 0
; W! H+ d" d) t. y

) i0 i5 `% Y! Oset oscillation 0
; L: u3 ^# ^! ?1 P( D
& z: W% O# H; J9 \" [
set rand-dynamic 0

9 G) _5 r. x9 Z' }end4 M) R7 W, c* ?% Z3 ~

) W3 H# n; B0 N, E) {3 {7 mto setup-turtles
* x7 B' h- E) f; m- Gset shape "person"$ S" d! m. Y  {8 |* o, i) z3 ]
setxy random-xcor random-ycor; H6 F. _  D( z% [' ~7 a6 P! e/ \
set trade-record-one []5 u1 X! _( G7 r  w- f4 @

  L; \1 a* o3 v3 Z9 Sset trade-record-all n-values people [(list (? + 1) 0 0)]
& A5 d  y- v2 c& N

3 b$ K: {' M1 J! x, g3 Bset trade-record-current []
0 z: w% b" e) g( A4 ^$ Qset credibility-receive []
. h; I) Q+ {! ~& xset local-reputation 0.5
3 t7 O# `6 y2 p+ U; l" yset neighbor-total 08 c2 j" E5 s; _: k
set trade-times-total 00 t  q6 E+ H% p% J! a* z
set trade-money-total 0
; J4 J" R& n" `' H* b  _0 k  c2 gset customer nobody7 _; w$ l8 f8 z& p$ O
set credibility-all n-values people [creat-credibility]0 p& Z4 F! V" Z3 L3 p9 D
set credibility n-values people [-1]+ O" @8 L- S/ {7 c% q5 m- j$ V
get-color
* k6 {4 E" X. Z1 J/ M: \
: |1 J; v7 S9 u& [9 \7 O! ~9 ]
end
- G6 f+ C: L; r7 s3 q0 h3 h/ N) S; W6 B: G4 e2 m5 t$ Y* n2 Z
to-report creat-credibility
  \: g; I, R* D) B! q5 v' _5 hreport n-values people [0.5]( S. t1 K# B4 q) o1 V: I9 F
end% |  Q4 K* N. b$ F

! A4 `6 h  k0 w' X2 x9 f* L* b* fto setup-plots
! S! s5 N& S0 h) y
" p4 W$ T8 |1 x5 uset xmax 30

, V( ~' K3 n/ k/ n' K6 Q- p" D5 N# [  a
set ymax 1.0
  v  R5 x4 s' d

9 E  r" z! V5 Q5 Xclear-all-plots

" _% y% W( @1 O8 s# \. g* Z% {  ~0 _3 B) S# {7 J
setup-plot1
/ H% y2 t6 T, |( C! O1 y9 H
# r  u7 L% z8 n# ?
setup-plot2
7 K! T% B; z4 P; `( h

! J1 I- X5 y$ Ysetup-plot3

: Q# W, j* u1 S2 {) qend7 }$ C" G/ c7 C% C& E+ |

% k2 M7 K& s+ u9 h0 \2 k;;run time procedures
1 H; [% p& H$ S# a8 g% g
0 r0 r' v5 {& cto go4 M0 M9 V- E" k3 \9 C% a8 S
! F, |6 y& a& N& m; U/ J
ask turtles [do-business]
% ~. p  r6 V, |% N
end/ N( V1 ?; I( T. }
+ k0 h- w# W1 m  y  }  S
to do-business
3 c' d( D4 W% d, c7 x

2 I1 T7 ]* y+ W' i) W% {, t9 @/ y. L+ s
rt random 360

5 M5 Y& A. n  p* E. A. i9 E+ i& A) a8 w4 g3 p
fd 1
0 }9 U2 G' W; I2 _+ V

5 E# f3 K# |2 i# Z& D( eifelse(other turtles-here != nobody)[

2 O# ?0 A% C0 W' f8 b" }6 I0 F5 k- Z( [# l8 {3 k
set customer one-of other turtles-here
: u0 t2 P; L+ \! R- l! T
' ]4 k" n  b5 p) a
;; set [customer] of customer myself

+ ?- y2 v" C$ e+ v/ R( x+ R( ]5 q9 F6 U* d
set [trade-record-one] of self item (([who] of customer) - 1)7 x  B$ D5 s) ]+ l$ o
[trade-record-all]of self
2 f, @6 t: W: |2 j( N6 ?. s;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
4 V" z3 l/ _3 D# D3 Z" w* n2 {

; ?, f- {: M# ^, Aset [trade-record-one] of customer item (([who] of self) - 1)! Y' {! s9 b7 I2 ^* Q
[trade-record-all]of customer

. t0 J$ Q( @$ N$ |% N4 _$ y
( P* _& W* ?; i# Vset [trade-record-one-len] of self length [trade-record-one] of self

% u: C; E8 ~% H$ I3 l; w( _4 `
) U) o3 ~& D( [& L: G% S! g. uset trade-record-current( list (timer) (random money-upper-limit))
  V; T" h) r  u! L' B7 u
) u  a- O+ O" W! V  O9 |
ask self [do-trust]
& E; A2 ?/ J/ w; L$ I;;
先求ij的信任度* @1 H/ ^5 \  Q8 I0 b, B" D

$ q6 Y' a' j/ [/ P& ^1 @$ fif ([trust-ok] of self)8 L6 j. [! I+ x' E7 a+ m0 w. r
;;
根据ij的信任度来决定是否与j进行交易[
& l/ _( P* Z. R  z- U1 cask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself  z& ]7 j2 J* X7 z, {
$ @- X2 U4 a4 s2 `5 a$ A
[
+ k8 W+ k8 o( C6 |+ i

0 R4 W0 z, E/ `7 ~; Gdo-trade

% ~. h$ n9 u$ p* _
" n& {: u; P3 J! V. l& t$ Kupdate-credibility-ijl

  s( d9 u& b& E2 g" O
- G  m. n2 H: S7 N" Eupdate-credibility-list9 c& k; m. X; s# I* C& ]9 S
& R$ o$ ^+ j  l4 i% ~+ n$ m

5 T' C4 C# x* |+ Vupdate-global-reputation-list

8 T' v* Q2 e1 E- ^
# l0 f( w5 n! q" mpoll-class

5 y! ?. a6 s5 a) d
+ u; L. Q3 f" W2 c. q! pget-color

) n9 o) i4 O" w# y  ?& @( U! j8 B
/ y! b( V! P, Q2 w8 K]]# F8 P) P5 D, ]5 ]# ]9 ]

) h1 C( q, i3 m" m5 ?! F8 l$ J;;
如果所得的信任度满足条件,则进行交易" d6 E$ I4 ?# A$ z( w! P$ b

9 _1 x% L. d4 p0 m, t; }  |[
) ]7 H( I& f" i/ G1 f4 d
! i# g1 _" P& q' e" N. T
rt random 360
8 e  u! ]2 J' j. Y# c/ @

2 |( x0 ?( N- Gfd 1

8 t, ^9 \( [5 Z1 A( @+ c, m# Z% |- w5 s
]

! E/ i4 R$ o# o6 c' h! |
* |7 [7 x- {1 r, V+ t  b8 ?end

" K3 K' E% Z( @. o% V7 |! H% {4 K. B* d! I% ~. S+ k. p
to do-trust ; ~+ |: T8 S1 x) d7 p* G1 u- S$ A6 x' l
set trust-ok False+ k9 N5 m1 n, t' O0 ?. A, p
+ E. t2 i5 Y9 S- g, f- \7 ~

3 ^. Y( Z1 s+ l& x3 ^let max-trade-times 0+ s3 u4 D* l* N1 b1 v# r. l
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]0 F" a; K" o( n# I
let max-trade-money 0( Z5 r; @! U" t) L- V, x7 @& J
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]], V  K; s2 h4 D( ]5 ]
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
" C' F) b; P. a7 u1 p" a- e% D/ b+ R" [
5 S9 a) Z0 N8 I" r
3 K# X& V" \1 T$ O( O% [
get-global-proportion
+ E, y% o% {, S& y- A7 b/ T8 d, Glet trust-value* `2 ?* |; m3 U, J4 ^
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)
% z4 [. y, c& u+ O1 H$ ]+ r
if(trust-value > trade-trust-value)
7 @! `- j% A& W3 c[set trust-ok true]
, U" E# Q( R0 l7 s! Dend
  w2 z& X0 ^7 ?6 B: Z( Z% r2 p, o+ S$ p0 ?/ R
to get-global-proportion
. p1 p: f4 {; ~6 kifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
4 U) Y9 G. |3 h0 D0 T) ^2 [: O& R[set global-proportion 0]
5 ?0 t* v' D6 C[let i 0
5 {$ ^- e9 ]( P4 h& Jlet sum-money 05 Q4 X2 h) F2 q, q& D1 l& d& C
while[ i < people]
& z, q% r- D( o$ |/ [$ y, \4 q[* p! v6 U# }& B2 u( M! {- W1 c
if( length (item i, p0 I& E& l0 J9 s8 y/ x
[trade-record-all] of customer) > 3 )
- X' N5 x) g6 p3 o( W7 M- w# E
[
5 {& C% J6 ~  q4 ]set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
# x6 _* A6 T3 O1 B& K% [4 a]
6 M: `* C  k1 }% `0 g]# O2 h0 c2 u+ H
let j 0
) b: a3 V# R/ {  Z; V9 G$ `- `let note 0
4 b8 B5 f. [. c" U- M& uwhile[ j < people]
- M0 O  m  V. Y  E0 |, l[
. s. u( Z0 b, e, Vif( length (item i
2 ]2 t7 N5 y$ y! E[trade-record-all] of customer) > 3 )
7 n  \; X5 g, Z
[
( O) C7 I( n) I3 }6 ^4 ]4 y8 _ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)# p$ ~( s3 d& X3 e9 o
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]' k6 O3 C- M( d3 K/ {+ R
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
6 |' ?8 c3 t  x; W& C]6 n. X8 V+ G. I( k1 e" ^4 t" ^2 F
]' [. c: o1 M' U
set global-proportion note
" J8 a: Y# F, p; l& S]
. I: i( D% a1 J* ^( gend
) O" W% o$ a& x* q5 z+ Q" \# o9 a" Z3 X
to do-trade- B- }# X6 D( T% i3 E6 a
;;
这个过程实际上是给双方作出评价的过程  U0 p' O  t$ B1 ^  L
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价) Q# |, b4 `0 ~5 n7 k5 Q. o* b
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价; ]9 ], p. T7 C) k5 t: }
set trade-record-current lput(timer) trade-record-current2 X( Q( ]5 w) B+ \
;;
评价时间
6 d2 P* Y; W# Zask myself [
) h* t4 R: H  r' e7 ?! }, kupdate-local-reputation
$ u- F) ?0 I) o. \$ `( Rset trade-record-current lput([local-reputation] of myself) trade-record-current
  [! J6 B, U: b$ h  ?]& i. T3 N# v( i- y: K% C+ L, ]. s
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
- e& A" M  V; G& ^;;
将此次交易的记录加入到trade-record-one
, V) {# w! z0 Mset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
  S& V/ }$ s0 c3 D  u* B5 @let note (item 2 trade-record-current )9 ^& s: Z1 [# h* W/ M2 c
set trade-record-current
( e' r: D% S! J- f- J" J(replace-item 2 trade-record-current (item 3 trade-record-current))
3 n+ w* q; q5 k, A
set trade-record-current4 q9 n3 J0 _3 h
(replace-item 3 trade-record-current note)
% O" g! M  I  ?5 ~7 C" C* O( K: z  N0 N( e* S
! s5 i* c& l; s+ D
ask customer [' x! f- V; ?; X, R. e
update-local-reputation
+ V/ [2 l5 p5 f% g4 I  b8 m: fset trade-record-current, ~: q; B' T( l3 ~. |
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
( B) v! P& r3 f6 U, a
]
, R' [% j* K  u' \+ L" M6 y' S% p' `+ N6 c( ^' R% Q: u
. g! E+ t5 `0 ^2 H( g+ _
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer, N$ x3 I7 X/ m  ^
2 K. b, c: O' j0 X* x
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)). C# l1 b" A/ L; F3 X: ~( f
;;
将此次交易的记录加入到customertrade-record-all
3 W/ ]% A" q: `% |+ _3 z* Vend0 Z, v3 y! u# W+ \% r. j& r
) Y: T# w. t- ^$ a3 z$ v# o
to update-local-reputation
  Z# m& b% e6 L& g! p% {1 u! Wset [trade-record-one-len] of myself length [trade-record-one] of myself6 Q4 W+ E4 k' F$ C$ j* V- F
2 S9 c2 v9 O- W/ c) T
1 y  d) R" p- @2 U
;;if [trade-record-one-len] of myself > 3

1 N) b0 u7 W6 }update-neighbor-total
0 A: F8 y. E: m" i( A; `9 E;;
更新邻居节点的数目,在此进行
) }8 I! Q8 u( X3 Y8 H8 K; X! Rlet i 34 s( T) g6 P& L! G5 j% B
let sum-time 0  M& w, I6 g: Z5 @& E% o3 t$ H' N: M
while[i < [trade-record-one-len] of myself]3 n  _, Y4 @/ b. m% Z: f
[
) }' R5 D! `2 i9 a8 Cset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
& v; z4 B8 |' R0 G" sset i
2 a" j1 Y. c$ f5 z; O( i + 1)

) _& }- _* _: }9 }7 T], ]% z* k) W% K5 ?4 l- o9 T" B
let j 34 M, v5 B( B0 k" d' t, @$ _8 U
let sum-money 0, Y; d: i4 K: m4 q, d
while[j < [trade-record-one-len] of myself]8 {- g! {& }8 K% _6 n! _
[
' z- I2 _$ k9 p. J+ I! {set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)4 ^/ K( f' h- @/ L
set j
8 z' Z; S( s, h5 C( h( j + 1)

5 O: E$ w4 `) t3 g( e5 P]
8 Q+ q. F% Q2 H0 H; B3 D- _let k 3
7 R" ?6 O2 @+ U& V6 llet power 0
0 c  `8 {& h" {+ `9 e: x- klet local 0
( D0 {3 f8 D- o; Q: U" D7 Hwhile [k <[trade-record-one-len] of myself]
- Y2 R/ d5 K9 b( z2 e[: W" O- [. O  Z2 p
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)
% F- o/ ?, e, X% sset k (k + 1)
5 y* u4 T" @0 `$ o  }]* e# W" f9 e2 k- ~% M- j
set [local-reputation] of myself (local)
8 g# ?) l: a" f; kend
& h) i1 F/ T, N' l* n$ _6 v1 Q( B( r* G9 @
to update-neighbor-total
4 ^; q) z0 g; h4 C' \
6 ?1 ~' \/ |, ^) L0 lif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]$ ]" I6 p  i5 g7 _' |% O! v  {
2 g5 m( J0 ~4 e, K# B

+ e' m3 J- h; @2 aend3 m0 J) B' b) T* X# c4 e
5 d, l* b& i8 G. M1 A) }1 z0 F
to update-credibility-ijl , t- R1 f1 h+ y& t, e
+ p( [  b, @* d2 j' |
;;
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。* ]9 Z8 j) c  L# T/ r) r
let l 05 g1 Z9 [7 D, j5 o  g8 E
while[ l < people ]
! A7 h( {  h+ K( R  i, L/ x;;
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 C' Z) k. v/ e[! }$ ~$ I; j2 U! {! f( v: \; U
let trade-record-one-j-l-len length item l ([trade-record-all] of customer). G( Z1 k! Q4 G1 E
if (trade-record-one-j-l-len > 3)
+ \0 B' A! {( e+ G# q[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
) A! Z+ |& r, T# Slet i 3
& s* U5 @( E8 f; o! F, b/ [  _' flet sum-time 0
- x, d4 [% I2 a0 z$ }  _! owhile[i < trade-record-one-len]3 _' s) I) C* p+ f! E
[9 d1 B: ~. @% ?
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
; ?( }3 v) P7 S" cset i
/ ?7 }+ s9 i! _9 O1 J5 G3 x  E( Z( i + 1)

1 H. ~. @0 e6 }. g; N! {]4 X) }& N' w- Z" u0 j: k  w
let credibility-i-j-l 05 K, x) \3 Q! q; f9 m6 b) ]
;;i
评价(jjl的评价)
, G  I3 ~8 J' A) F5 e/ f7 @2 F0 Wlet j 3
& D" T1 T" L0 z5 g5 llet k 4
9 g# a! Z. I) ~/ h& ]while[j < trade-record-one-len]1 b8 A4 J. `- J8 H% T
[
1 b2 ]% K7 S% ^  a5 C) W* \% 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
& G5 ~9 l( e% m6 Gset 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)
9 V7 V0 S* D5 X$ W$ Rset j
) D1 H* G# s) @& x( j + 1)

0 N( ?: G5 q5 S* t0 j' M8 Q5 n]
" y  K$ b! L" i8 F& B" }+ Qset [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 ))
/ P2 w. O+ Z$ b" Z) J8 [4 Y
) u* }3 |" b+ N. r; T0 ~# v

2 |6 J( j9 ~3 b9 a! Xlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
" T) W/ O9 w- X- n" W;;
及时更新il的评价质量的评价
. J- S6 r$ H( U/ g6 Oset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]& S/ ~' x3 ]* a& I: ~( f
set l (l + 1)
/ A9 D! h8 r$ i: p& f]
1 I% J, ?, n7 w1 V  m  |% K( fend
. C' m* v" a, y6 X# t2 o- b. {5 ~" E" a' q; j
to update-credibility-list
3 }8 J: a, ~$ L$ [0 Y0 Klet i 0' m' q# ^2 `1 Y
while[i < people]% x) q$ f4 _+ [4 G9 a! N5 v
[
( }5 m: ]9 P* D5 i' J; slet j 05 r1 W# q! W; Q2 I
let note 09 o% F( A) Q1 K0 G
let k 0
) B- K8 L7 O* T8 K1 {+ S+ a1 I;;
计作出过评价的邻居节点的数目# q3 f' S& h0 N
while[j < people]
0 w: v* f6 d0 U7 ^0 T5 t2 Q[
, ]+ u3 {4 x: I: hif (item j( [credibility] of turtle (i + 1)) != -1)6 M7 z: i1 W3 q; P) J" A
;;
判断是否给本turtle的评价质量做出过评价的节点- A& E9 n# D. O3 ]+ ?6 d
[set note (note + item j ([credibility]of turtle (i + 1))), A% c; I1 H& k
;;*(exp (-(people - 2)))/(people - 2))]
) K0 n3 v4 k+ c3 X9 B
set k (k + 1)
" J- L+ g/ N- }& s/ E]' f2 W/ Q! u6 J: H
set j (j + 1)
7 B, z1 p1 ?% h0 E]
. r; B7 U" o8 B6 ^, A7 Dset note (note *(exp (- (1 / k)))/ k)
' i7 O+ O0 B3 T: e7 W! O5 Lset credibility-list (replace-item i credibility-list note)
; O9 a/ N" G+ R1 S4 Mset i (i + 1)
8 }& g8 i: |! J8 F6 v]
; N* C! I" @% I% L5 y) Vend; j6 v/ q/ U# `4 C( x5 A
7 c: k3 z- ^& O$ }/ N- a
to update-global-reputation-list1 z6 k, {! B# k, b7 S: M
let j 0
2 w, w  K' Z; V( h5 K* twhile[j < people]$ g& A" Q/ g0 m1 j
[
9 Y3 f, ?' \- `8 v' l5 [5 vlet new 0
- r3 @: W  }4 L# ]" w: C( V# }$ r;;
暂存新的一个全局声誉
0 Z7 t; p; O) y% j/ H7 `' `+ ilet i 0$ t+ h2 W. h! }% O# V0 H- ?+ H( L: j  Q
let sum-money 03 r+ {/ `/ l5 J, |/ N9 q
let credibility-money 0
1 g% r9 K  m- P. k6 H* y3 zwhile [i < people]; S$ m1 J* k: e3 Z( J/ O
[
+ |/ t' [4 _" qset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
9 u% \8 x7 |+ v# I) iset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))6 O  s" z  d- i- A
set i (i + 1), V: X; X. O( r# j1 a3 C9 N
]
$ f" s$ }& W! _! v+ h! H( b* F$ olet k 02 g1 O1 s# V3 X, q4 |$ k
let new1 0
  c0 _: k. b3 z5 e. k. u/ rwhile [k < people]" |: N! S8 t, C! S. c8 a
[) w. I- F+ R' S4 ^
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)
# x+ x+ t: s0 Xset k (k + 1)! k7 q0 l* i: r6 W. a2 b; X
]' F" s& ~" s; i9 X# ^) R% I( `
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) $ {8 a: R/ a7 p  f
set global-reputation-list (replace-item j global-reputation-list new)
6 y7 W8 C0 g3 ]8 W6 L, fset j (j + 1)
$ l" _: P) }8 v, h# t]: P) k) ~& W1 k6 z4 @2 q
end5 u. ]: r6 ~/ W

" j- a- n9 R; J1 s9 r& x2 K2 \0 L  O; i2 L; g2 e) |/ }9 {% c

+ ^, I& {; V1 |  ^$ wto get-color
/ c  r  F% i' l" S6 Q- c  _* e" h  Y) X
set color blue
* \" }/ }0 S8 A1 z4 J
end
. q! h% D7 n9 l3 \- W3 m0 J+ L, _/ I
to poll-class
8 F/ }  E" D* M7 s$ T9 j. @% s& ], jend
6 X/ d+ T8 j5 u: t( j' Q) q, l8 e2 O' V4 _& q
to setup-plot1$ x  W8 ^  |; ~1 X* x: t2 W8 d
8 A1 Q5 ~$ M# t! S  u# T1 T  c
set-current-plot "Trends-of-Local-reputation"

3 F* N' {+ \9 V, |$ ~0 p2 d3 O# L, e. }* ^( |! }
set-plot-x-range 0 xmax

1 [% w' E# w5 Z# T" O" H% z
) ^6 R+ u% j* K+ }( sset-plot-y-range 0.0 ymax

* R- Q6 }1 L8 B6 `2 j/ _end  \6 B$ j' Z* m/ O8 M! T5 |

! u$ p. Q/ X$ S: J$ Ato setup-plot2% v5 i3 v$ A1 A3 v7 [

- L% f) H5 B  B1 }. B: G$ oset-current-plot "Trends-of-global-reputation"

2 C" c! f5 O! l# L0 t
* V% `9 \( K; v, J- r+ Kset-plot-x-range 0 xmax

2 h; I; P9 o* R' w; h# ]+ w2 l! d1 P! a' h% Z" z* p
set-plot-y-range 0.0 ymax

$ _+ Z8 r2 |# f' p- uend
3 W  Z2 h4 T; q/ n' N
! n( c4 u9 V  d! a; m" A6 m$ @) ato setup-plot36 Q! D* g0 ^' U

# `7 N, j( M+ T/ R) r  c9 x7 Eset-current-plot "Trends-of-credibility"

- i( X0 {" @: B' |+ V5 Z* Q/ Q# i: A5 M9 n; _* V- r
set-plot-x-range 0 xmax

& Q6 I. C% l6 R( @7 H) H0 R3 D6 a! D8 k' j, R& M, w
set-plot-y-range 0.0 ymax

% ]; ^0 G  w0 qend0 M$ k* U, g; t, ^* u, Q

3 s& y5 w# t5 qto do-plots
6 R& ?+ F2 A5 E" v2 Zset-current-plot "Trends-of-Local-reputation"
; ~7 x) ^( R  I. q7 O# C  ]7 @( }set-current-plot-pen "Honest service": S4 U6 T1 O. t
end
5 C" f& {: Z2 J) \( [9 J! F$ k- Q  ]! U
[ 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.
; ]6 U* h/ V& d+ q4 v3 ]
) p$ ~7 e1 S$ ]+ \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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