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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:( h7 ~: |; y1 V. _% l: {& \
to do-business
* B. k* A+ E: ~$ ~ rt random 360
: x/ y1 `4 X: b4 ] fd 1
  K# S3 m. Q1 d9 S ifelse(other turtles-here != nobody)[
4 t! u# m, _6 }/ j! k* \0 u   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.% ~3 h9 G2 y3 P2 W: p
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
) }! U8 n+ ]4 Q3 o' l4 Q  K' N   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer  Q  f7 w6 G% y8 x9 X" D2 [& a# [6 c
   set [trade-record-one-len] of self length [trade-record-one] of self8 X& |' E* w8 {4 J$ G
   set trade-record-current( list (timer) (random money-upper-limit))
; C# d& y: ^* l
- {& z2 f: j$ \4 d问题的提示如下:9 t  N5 k: F+ l- b0 A

0 w. k; K( L& {. `: [! lerror while turtle 50 running OF in procedure DO-BUSINESS
+ ]* X+ v# h9 `% U6 f  called by procedure GO, _, o/ E* Z- a0 T+ B/ g& o
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
4 U: g& x; f) [/ d+ V# F! O) [7 c
(halted running of go)9 B; _5 ]. r+ k3 E

/ ?5 @/ Y7 c' R& c" r1 s1 q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~~* p2 W; _7 V4 U& m
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
' z, e) Y* t5 }' o8 [1 t& Bglobals[
$ k, b4 }/ a/ E2 q" b7 sxmax3 a& u3 X( n9 @2 {, M# p
ymax+ L* x3 f5 o7 _$ N( L; b% b
global-reputation-list
# m% {) Q; q: D: N+ k" \5 a3 i- e$ w; I
;;
每一个turtle的全局声誉都存在此LIST- ^+ g3 f! r# l/ `3 m
credibility-list& D; S# s* ?" C* L/ ^. k5 C
;;
每一个turtle的评价可信度
% e: F: X7 J1 x1 Z1 Jhonest-service
: D. H/ Q, ?+ n" B' Munhonest-service
& ~$ G' n2 \  X# E1 Q7 W9 Goscillation
8 p3 @, i8 [/ R  n7 T0 Urand-dynamic
* @3 B/ x- @2 t6 q: \! h4 p]# _4 q5 q) X- d0 J$ [  H" d
! ^7 _7 Y5 J& [7 W
turtles-own[
2 _, k. }1 e3 j) s' D; L7 n) I+ o2 ^trade-record-all
( K4 x5 l8 f4 y;;a list of lists,
trade-record-one组成
. V, G! c" v7 ^8 Q# P, ^+ \trade-record-one
# ?4 _: Z: p1 H; ^% \& H1 t5 O: R4 t;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
1 B% n% B3 N' \2 ^* d9 }
0 U2 g9 k0 X7 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]]
9 [1 z/ G2 L5 A" h0 h. J7 ctrade-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]4 K! P) X" s2 n) f6 s
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) m* p) P$ O9 F' K
neighbor-total8 R; N6 z% m9 @
;;
记录该turtle的邻居节点的数目
% h0 K* q, c' ~+ \9 ~trade-time
8 ?5 g  L7 \2 G5 F;;
当前发生交易的turtle的交易时间# B; {7 Q/ d$ ^7 ], z) N& x. L6 H
appraise-give" q8 z/ y2 ~& B. a
;;
当前发生交易时给出的评价2 R. Y' a9 P/ |5 q2 G
appraise-receive
* P* C' ~9 n4 U$ z# |2 B;;
当前发生交易时收到的评价# [" l* P" F. n! I7 G1 c3 }; q- H# C
appraise-time0 x3 m4 Z1 U/ g
;;
当前发生交易时的评价时间
. `9 q% M( i# L$ n6 Hlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉* S' A1 _% y4 D& j+ f
trade-times-total9 B$ }; H9 |& i% b; l7 C  K: f
;;
与当前turtle的交易总次数) x# N. |' s0 ], I; ?1 V
trade-money-total
4 V9 E# n( M; x4 Y+ q/ Y# w3 J;;
与当前turtle的交易总金额
2 c* S( \" T& E- e, ulocal-reputation5 D4 z8 v. ^/ w2 t2 r. v, A6 t! P6 D
global-reputation
* ~7 O) v; Y2 {$ A: E. Pcredibility
% F3 C# M) t9 H2 H4 c0 F, M9 W;;
评价可信度,每次交易后都需要更新
8 X" M0 m' S$ I* Mcredibility-all7 u: Q9 \& m, R+ E( d; Q
;;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7 m2 I, S/ T* y3 o6 S" H+ I, r
8 \( h3 G1 G1 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
6 t. e1 B6 b3 q% N0 }0 Zcredibility-one1 u  B$ ]* R5 h' g' W
;;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people6 h& a5 y3 F. }6 |% N
global-proportion
) R2 R9 R9 _6 M; D. ?customer
& U5 e3 z: x& N6 ucustomer-no
! N& a: y* X+ Q: C( j& ?trust-ok
3 r: [) H; t( H0 w9 htrade-record-one-len;;trade-record-one的长度6 L9 A% L  Q0 V  N( T6 f0 R2 a
]% V9 y7 o; ]8 Z
' o) s# b6 ]7 x; h6 T
;;setup procedure6 ?3 ^1 V* Y1 E: }! S/ i. B

/ @2 H! H( T: k7 I7 X. U! ^to setup" g) c) h. x3 q6 L4 ]

. E1 {( C2 S% F7 f; I# E% Tca
, Q( y1 z. F- c2 A1 s+ _- i
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initialize-settings

$ p5 h6 O4 T( t  E% I: _6 U7 S  k5 l, K8 A0 w' W; P
crt people [setup-turtles]
' ?" o5 y: l/ ?6 m. S# p3 j

6 Y# r7 a0 e4 \. m/ q8 C2 E# e; Nreset-timer

0 T' |( R1 x. f1 o
/ J. ~  ^2 G- ]6 ?poll-class

1 m! x! d0 g6 P8 t9 ?5 A
6 g9 X! S- R) x  n1 lsetup-plots

& r% ^! O; ^# C0 G" O
: d: ^' c3 d  J" o# E4 @do-plots
: C- h, _4 |1 m
end
1 J) O! e4 u. b2 m3 D4 L5 k
4 }8 X  V; ?. }# I& z' Lto initialize-settings0 Z. b* O# V4 d! P& g! O5 M
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set global-reputation-list []
, K! l# [% v% O

$ L4 |) D5 r( F8 S+ vset credibility-list n-values people [0.5]

! R; B) J! k/ ]: E. R$ k0 ~
( G6 s* d' Y" O7 }set honest-service 0
% d1 p& c+ L, q; w: m# M4 t

3 i2 y  H( w" N* Kset unhonest-service 0

& z; c6 N0 t4 S9 x* j& O6 K9 C( w- f
set oscillation 0

+ i" w+ g/ `+ H  M. x4 P) C/ u% d; I) ?) F  ]) B& e5 T
set rand-dynamic 0

- _1 S0 d. D8 x9 |: dend
2 M, X# i- S9 K# ]8 X1 `+ x7 ^$ j' ~
to setup-turtles ! P6 p' d. F) I0 ]9 g
set shape "person"! z7 F! u0 a5 l& }: X+ Q9 R
setxy random-xcor random-ycor
2 V6 D( S6 h/ D9 }set trade-record-one []
* G! U" B. `$ [/ @

7 ]; U9 W) U2 l# K% \, tset trade-record-all n-values people [(list (? + 1) 0 0)] . r3 _+ [2 ^5 o7 t5 ]

! Q7 P! n1 i" |% Aset trade-record-current []
+ r* O* e5 K6 a  Vset credibility-receive []3 ^7 b+ X2 x9 J
set local-reputation 0.5
+ _9 C) m3 |. mset neighbor-total 0
* \# ~, q, V7 l) o8 gset trade-times-total 02 w7 y0 b" Y' @/ Q1 w6 p0 K
set trade-money-total 0
( j" F4 Y: Y$ w3 Zset customer nobody  ~) ~9 q4 B& F! ]! ]( _& B
set credibility-all n-values people [creat-credibility]
. J$ E7 Q# b  ~# T5 G1 Q1 Yset credibility n-values people [-1]1 G' c/ |/ ?* c: x
get-color
) T( y3 l6 D0 V# B' T$ p, f2 q
. s3 }# u6 i6 e" {8 y
end
4 k: k2 H7 R/ ]! |0 o- d( p# Z; B# H- w% M3 y# p
to-report creat-credibility6 o6 G! v* Y/ s9 T
report n-values people [0.5]
  c& ]3 n3 K7 j: Z' B8 eend7 m4 a9 ~7 X* b( I

4 Q; R+ W  S9 rto setup-plots
8 Q* {" j' c' b' b& |/ ^
4 W- Q. e& E& Z8 L" eset xmax 30

+ O' V# K4 F! U/ G/ j; ^  u% s+ Q2 Y4 }7 l: A; C9 n  Z
set ymax 1.0

  ^  P( i' M5 x2 C  B$ y
1 N/ h  x2 x+ _, ]2 s% b, ]clear-all-plots

* o/ P& {3 ?3 M8 v! ?/ @, a2 F; y
6 m: q: {9 T" Qsetup-plot1

% p% n- \) b& |6 S3 c! l* G3 ~% a# i* [7 i9 C$ q
setup-plot2

* l) K  |- S: m! E& {- p9 V7 F
setup-plot3

# A0 Q4 u; j7 l$ D, [7 Bend3 ^4 Z: N1 u2 d  A/ F: f$ U
' ]! W" D5 K* m
;;run time procedures7 j; Y$ O! p0 a. b

6 }0 r; s* o, k  f9 Uto go0 I8 k* G+ R5 s) E6 D9 ~

9 I0 N8 r  x  t* @2 ?ask turtles [do-business]

. J8 F8 b2 E  eend: Z5 A8 J- y& Z9 M+ b

# F% M3 f- Q) k4 Kto do-business
. M& s, k) P  C) ~% _- m
! ?( H+ m) o: l9 n2 r6 h9 V0 u9 _
3 i1 F4 c. z* n( l+ N
rt random 360

" E6 k& A/ c% h$ H* F4 `
% @" B! B# B1 n- i7 Pfd 1

8 B( i3 `$ ^; ]1 @8 d. \# |! C7 V1 M* p* A9 w# Y
ifelse(other turtles-here != nobody)[

8 u  \$ A* n3 `0 E" e  R* |3 s) O, m) _
& s, K8 U' I: f& H% T) }) aset customer one-of other turtles-here

0 Y4 k7 z8 y/ _% H
! m. F( N, [' M: {, I$ M) @! y;; set [customer] of customer myself

) |7 d9 e/ k! H1 R% n+ V& c( u# a" A2 [9 \
set [trade-record-one] of self item (([who] of customer) - 1)3 N7 C- G) e& T* Z, G0 w4 ~
[trade-record-all]of self9 ]2 d! n& e! ~4 p# X
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
* `8 d% k! z0 E" E8 ~1 f

9 J1 [3 N/ P8 L3 ]- c$ M  A" Sset [trade-record-one] of customer item (([who] of self) - 1)
. c% s( T7 N# l) D6 N. M, u  I[trade-record-all]of customer
3 e3 X) q; ~+ P, Q0 J4 @
' L  V2 D0 d; t6 M; @. G
set [trade-record-one-len] of self length [trade-record-one] of self

9 W3 E4 ~1 q# M# |$ K5 |% }1 c9 G" X) p6 [4 C- p
set trade-record-current( list (timer) (random money-upper-limit))

2 C$ ~; k. z6 S2 M8 L" B. p  c& B2 J7 S( D: H! y% Z
ask self [do-trust]
% f/ Q: F! R0 n7 g;;
先求ij的信任度
  D; h3 q; Q3 B- e9 t9 m& I* n8 K* b* \7 r& v0 o4 A* V. t: O$ ^8 J
if ([trust-ok] of self)
+ Z! @0 h* {' q% c$ I;;
根据ij的信任度来决定是否与j进行交易[
3 p$ d* ^7 I: Yask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
) p- v2 B9 s- r3 Z& g% Q/ V5 e6 j* L; A5 z( k: C
[
/ G  l0 Q/ r% f; V* D* N% k& \9 ]

  @5 T8 @' M/ S; j6 C+ M% Kdo-trade

$ y9 R3 s" N  g! s8 D  e: b# E
. w' C6 R3 i2 |5 F$ u* y6 S8 hupdate-credibility-ijl

, e* x7 Y4 o5 P, p8 s7 ?$ M$ z$ x  g, K9 T$ E4 I% X9 b0 ~
update-credibility-list
  ~- h2 T* Q) g7 U* i, ~7 |3 ^' Q
- B# \3 |7 E7 x! O) k# T
: C: F! M7 J0 Y. |7 _3 L0 O2 K
update-global-reputation-list
' S, C: B( b, ~* h: c4 o( X
5 m3 R/ o7 d- z; @" \& \
poll-class
0 L' R6 g6 L: e6 ]  @9 ?3 i
( A( M4 P6 d2 g( U! t
get-color
3 f" L  Q* }2 A/ D, ^5 N; F$ k8 D
' a5 T* |  e( m
]]' b" Y' Y8 j2 ^6 F

+ `4 K( c8 H! ^2 a;;
如果所得的信任度满足条件,则进行交易
6 l' B" g% s4 ]! b8 ]8 R* l: j2 @/ V
[
8 y* N* T/ D- F( q$ W

- V7 x/ L- r# t4 b# l$ Vrt random 360
. C* R# D* p- Q+ z9 E
2 f& ~# _9 }# F1 F9 ], ]) A4 \8 [
fd 1

# \! N+ s& O+ a7 t" d% \7 E, X
" j( W4 B/ H" a* u" p+ s]

# t0 `/ v9 ]% M5 h& Z
% V. R+ k2 a3 U" C2 R4 Rend
6 L; w9 s6 X: |" S! q: I
7 Z" d* ]; ]# S' U% }
to do-trust / [7 C0 d) \- a* {
set trust-ok False
$ O7 Z" [" x: T" U- T/ D
  {; q3 b; _, g" [3 ?6 J3 k' b

4 C/ k1 A. Q" P4 U7 f2 Q1 alet max-trade-times 0! d' `5 t% q" I5 M: I1 u9 [
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]) s4 M9 H& L( ^5 G: F) J0 B3 z
let max-trade-money 0
' @( m7 C6 D+ `foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
7 }' J5 m5 a7 ]& Ilet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
) ]9 u) |* m/ g. g8 f1 E, }9 b+ X
# n' l( S! [1 H" L
6 J1 R: r% o- ?8 @
get-global-proportion2 G+ n2 z" C  X) W0 j
let trust-value
4 _. F% O1 w9 T# P' r2 @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)
! l- b; o) D- H6 f
if(trust-value > trade-trust-value)/ x0 ]6 q1 r4 v5 h5 H% r/ ?( t# i
[set trust-ok true]3 P5 G0 c7 e7 ^8 `+ F
end& y1 t# Y( v/ A. r* O2 n
+ C5 [- d1 V- L! H/ X
to get-global-proportion
6 U2 q/ _0 ^9 C/ N% a- ?( kifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)6 G# o/ ?2 A  y4 i
[set global-proportion 0]4 ?7 r3 H- I" w  p' t( k! L
[let i 0
0 ?, _8 j8 C( R0 i" i, U( g) D/ Blet sum-money 0
8 p! X4 O# V# G3 k5 xwhile[ i < people]
& [  m% `6 j. i; S[4 S) N* s3 W$ [
if( length (item i
/ l& T6 z  w3 K/ `! e  [/ Q[trade-record-all] of customer) > 3 )
% j  z4 y' Z: ]1 v% t! q  H
[4 f" U' b! t( b4 b
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
* c$ `% Y3 a4 x]
% }9 d3 W* w6 z# C5 ^$ i( t$ G! i]
# w8 _) r+ s, e: M# w9 D* i& j" wlet j 0/ h, \* c+ h# m' v- j  J0 X# V) m
let note 05 H+ c9 `& q; G2 Z
while[ j < people]5 a, W7 a/ Q6 ]$ p8 z2 H8 H( A
[
+ b7 N) L& L" m; x- v: R8 Uif( length (item i& l1 \% z* }' d& u; u1 X: C
[trade-record-all] of customer) > 3 )
' y0 l7 m* a: \0 ]1 R! e! u
[$ I5 w! Y8 }4 l/ @
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)0 L* `* h* h, S* q6 D
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
3 @' X7 I' f; {9 e[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]/ `/ z" I  d6 H/ O, U
]" v4 f4 X0 W+ Q
]
" i- M" X+ J# r' r& W$ X; B8 Xset global-proportion note
) a, ?* V/ ?; \$ K+ Z]
, U8 q1 V0 ^9 X" V) d' U3 o+ Jend5 n) K2 K  |; T' L8 T- O  m- p$ o

3 j6 j1 r7 \$ R; P  H, cto do-trade
( |+ ^; Y- u# H; W+ e$ |) Q;;
这个过程实际上是给双方作出评价的过程' o" H# ]' L/ X9 v! l
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价/ b. }4 W  @. d* P$ F- ?' x& f
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价0 f$ U1 Y  m  T& r+ P& q* L( B- N4 Y
set trade-record-current lput(timer) trade-record-current/ p* ~. ?5 \* C8 d# t
;;
评价时间6 G8 b0 Y1 Y8 d. o% m
ask myself [2 |' M. K* g* e' E, P, Y# |! O
update-local-reputation: g0 p! B/ |  g# c7 ~5 r4 j
set trade-record-current lput([local-reputation] of myself) trade-record-current
7 H; Z8 O  i9 D$ ?; R! K]) l+ Q/ u7 B4 d
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself0 h- r. B3 @. H0 c
;;
将此次交易的记录加入到trade-record-one( c' ?; H  V2 _1 x
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
1 _: U( p3 B6 v+ t: [9 z* q, r; E1 `let note (item 2 trade-record-current )
8 N1 d* |6 ~* ~) u, d. Xset trade-record-current
; {# a! E7 h2 a1 \2 R" j(replace-item 2 trade-record-current (item 3 trade-record-current))
8 G1 Q( D1 r+ b
set trade-record-current: E2 x2 s& K) P  J8 b
(replace-item 3 trade-record-current note)
$ R+ G. Y4 d) d8 [# t/ i7 K/ ]4 O) v% q7 s& |2 T( m' M

$ N+ \% z( d6 Fask customer [) V6 b6 c/ \* u$ r
update-local-reputation
9 {2 m7 ~$ E- d3 q. nset trade-record-current
3 O7 Q: ~2 i) c5 }8 k$ |(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
; L8 i. e& `) G7 B$ t5 f# M
]
  V" S! O5 [; k; n4 W5 g2 V5 u6 F
7 N7 `+ v  p! c+ Z

! C: m. B5 k$ T5 m; Z: fset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
2 ^6 T+ g+ G. {* F

5 u  c  D7 G- Jset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))  b( b/ D# q, i# i2 j8 H& a
;;
将此次交易的记录加入到customertrade-record-all4 v  g2 B1 R0 W
end5 o) i8 w; C& s

8 {: |  j# i5 o' bto update-local-reputation
/ @: B' B4 P+ U7 \/ Eset [trade-record-one-len] of myself length [trade-record-one] of myself
8 L6 Z& v" t4 [' I5 @. {
  I5 x+ Z) v  A1 S: A- d, g6 ?2 o
; I* ]' T2 ]" [+ i;;if [trade-record-one-len] of myself > 3
! m% `& ~+ ~. v% d7 `! F
update-neighbor-total) h% k) r  A0 E0 L; h4 O
;;
更新邻居节点的数目,在此进行
& g5 c1 {- d3 {! o: C6 |let i 3
2 I$ @8 `* ]1 d5 x/ N7 a$ Klet sum-time 0
3 q6 ~4 \  V2 k7 q" jwhile[i < [trade-record-one-len] of myself]0 H( k2 p* \: P+ c4 A, s1 O
[( k6 S6 C+ w: o7 j# v
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )( l4 F5 s. X* U1 t% y
set i
5 A6 u$ M1 |, R- S! M, Q( i + 1)
$ g1 _1 @' `3 u7 J; ]5 T8 {
]" [) f# ~% y% i+ P2 x; u  K. T
let j 3
' z% j6 J, _5 r# x5 llet sum-money 00 s4 u( A5 \3 R# u! G
while[j < [trade-record-one-len] of myself]% [. Y* ?8 }: v0 U6 e" ]- P# p
[6 }! s  ^, D3 [8 R
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 t, a) D. x7 A7 U! Lset j
" X. B" D0 e: u9 M' y; e% D( j + 1)
2 q/ R; `( d* S" G/ P7 o( S
]. |9 R- @* N, H# ^% X2 l5 W: b
let k 32 f* v: a0 `  G2 Y6 [0 \
let power 0; Q; e! n$ J3 D2 R+ D1 E( X
let local 0
, i6 B+ G1 C+ rwhile [k <[trade-record-one-len] of myself]% f6 o! d/ S& z  D7 G' y: q
[
2 X7 N. ^$ f2 oset 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)
% [# G: Y3 B: b8 Xset k (k + 1)" A4 |4 Y. z' P6 y
]
' G6 p; _) e: h+ U9 {set [local-reputation] of myself (local)
( \4 h+ _& Z1 z% w: ^/ ~end
: J. ?- x% N4 X2 K0 k5 Q3 M. D! Z
4 G* b" z6 g# _8 E* ~- Yto update-neighbor-total
" t: H/ \+ g! v( o: Y- q5 _' N
: G7 r, i, K- X, {0 Kif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
' h7 t  ^2 c" ]6 x# j3 l; X$ |: `6 w: {0 n
/ Y8 S& P: O6 r5 k! L
end$ V% g' k  a3 X9 w9 ~, H; c
# S9 r7 V$ A/ ]) i- q9 k
to update-credibility-ijl
" s  I! d  g& S0 `1 }
$ F5 Q. h! O; {1 I. L0 X) v  j2 k$ C;;
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。/ _# t1 I# o* T5 x; I  c
let l 0
) v: o* e: R1 W8 iwhile[ l < people ]1 R* ]+ Y3 j4 x; B, r6 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
6 W& b0 A8 R7 {[
: ^; b8 i8 J. }9 @$ |4 I% ulet trade-record-one-j-l-len length item l ([trade-record-all] of customer)* q) r9 ^1 S& |) D. k
if (trade-record-one-j-l-len > 3). C" T. a3 s2 E- 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-one5 L( W) X5 T7 {
let i 3! d) g, o. v' i- v
let sum-time 0
- \& I1 \! |1 O  R, Y% Dwhile[i < trade-record-one-len]8 V; m# _! V, }( w( X# N, C
[
5 n5 ^8 S. n; y- M- Z( eset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )) P+ R1 b  v$ `' E! O1 m
set i
5 Q9 U+ {5 |. S- p0 b( i + 1)

- R; ^; P. h: Z! G]
& V5 p& ^3 T' s) dlet credibility-i-j-l 0
3 `- g5 C3 S, M$ v' y+ U3 X;;i
评价(jjl的评价)6 Q- A/ O! T' F; f
let j 39 [* O1 E$ [* s+ A# a
let k 4
% i: ^  n) x* ?& Qwhile[j < trade-record-one-len]! B; m9 c# z! W4 D# t% X
[
+ z  q3 J/ Q* L; g2 r$ n( iwhile [((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- M" p4 @# G9 p4 e, _3 y
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); _  y9 g+ e. d& q( X
set j
5 [- k1 v5 O9 f! \0 o- D: n7 [( j + 1)
* Y7 F) @  d, j. Y: V8 K- L3 u; p
]
9 O1 s7 E* d  Z8 F$ s& L/ nset [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 ))
' q6 U+ @! P8 y5 R, K) O' ]1 p" l+ ~( G& L) L& g% p

2 W+ \* Y  n4 }; B6 T4 [8 t  Tlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
6 ?' J1 c- g& h+ h" Z  w;;
及时更新il的评价质量的评价
8 l+ ~% ?4 g5 O' ], P" B1 E. @set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
* i* \4 d; ^4 @( J% V+ m% Yset l (l + 1); y2 c: \: y% |- g% }7 i
]
! B+ ^6 s9 _% q. D( b4 }* T( kend4 M4 L8 F- i3 w5 s

/ b+ N7 C* {, m) T. Cto update-credibility-list
! J; I( Y& K" _, Alet i 0
/ a9 _! a# e) w* l4 n) vwhile[i < people]# Z. r7 Q  b, \$ z$ H3 L* x# r" x
[
3 D; s8 C0 U2 K% Blet j 0$ E& W7 T& N2 L( n, F4 U
let note 0
: m9 X5 A0 }3 E& Flet k 09 {$ u/ g5 X, Z# h
;;
计作出过评价的邻居节点的数目
8 O0 E1 g. F/ y6 i" U6 }while[j < people]! q9 y$ u1 C3 _$ k8 R
[
7 T& m% n- n5 U' x, T8 t" Lif (item j( [credibility] of turtle (i + 1)) != -1)
$ @- ~9 z- R" ?/ Z& N. y' o  W1 L1 |$ v;;
判断是否给本turtle的评价质量做出过评价的节点0 @: T' f0 ^$ a4 A! `
[set note (note + item j ([credibility]of turtle (i + 1)))3 a7 T' g. Q8 o0 L8 A+ }
;;*(exp (-(people - 2)))/(people - 2))]
8 u: H, @. l4 [; M
set k (k + 1)5 }' B2 z) P$ P  e- U
]
- A0 N; t0 B& @- Q7 I3 N. Bset j (j + 1)6 ?' M; I$ A- i1 w' a, A/ q% }- [
]2 @8 M! |' I7 N, B2 S" Z5 m
set note (note *(exp (- (1 / k)))/ k)- f1 e/ Y( M: b+ D, q
set credibility-list (replace-item i credibility-list note)
- i$ ]/ V. Z4 _+ f4 S: D" [' iset i (i + 1)0 i% J. G- A# i+ G% i3 A
]
3 M. z- I# V/ j; I: ?end! q1 Q% a4 J' u3 g6 Q/ v. y& a1 a: n

; S) U+ @/ u- Pto update-global-reputation-list" H# l0 d% O8 O: h7 `2 ?2 D4 q
let j 0) l% X& T1 N& b! H8 F$ u
while[j < people]
8 Y0 Q- o7 E& v+ R[) r' c) @9 [3 K, N; I9 _
let new 0
$ m2 y! A& E4 U& X* q/ L8 h;;
暂存新的一个全局声誉
" a& K* d$ r5 [( J1 P+ g; W* q8 Vlet i 02 @  M1 v6 j( w/ L
let sum-money 0
5 G: E5 X2 w) P$ v$ ]4 @# l/ p! vlet credibility-money 0
3 r( H/ R5 C! ~while [i < people]+ M3 i. b  b/ u# t# S% @
[
0 u' e! b; Z0 eset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))). I4 R- D6 P. _8 `( a0 T5 Q  M
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))6 w% @! m7 k9 V% K  n) i5 C
set i (i + 1)
4 U8 M$ W$ v. h& S. ]6 l7 i$ p]
, |1 P9 ]- _+ p: u7 Blet k 0
; s+ ^7 t* J$ {( blet new1 0
: ]4 R9 I; E4 O( ~" [while [k < people]9 T* s' u( F/ m
[- S+ o: b9 m/ O/ U% p. x) O, z& H
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)' e# P! n6 {+ M1 }  c2 f' L* g% ?
set k (k + 1)
: _% H& ?' r; N+ j# U]
' d; d5 g, A; }- o! g0 Sset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) & \) b$ m; ~" ]
set global-reputation-list (replace-item j global-reputation-list new)3 Y- m- e: s5 k3 A" N) {+ N: s
set j (j + 1)
# T9 t* M$ p1 @' r]
. K: Q: w0 d7 _% M" S' p+ dend3 W5 e3 \7 J% z6 g

: V" j4 A% J3 \" g6 ?
% h. n' s' Y0 j) Q% s: o) ]8 N3 U6 i# S; R6 d* Y
to get-color
: x' ]: L, I/ W8 [8 w+ Y: \2 G7 b' a# C9 G$ q) ^( h
set color blue

8 k: M8 t7 M, Nend& [( z9 E8 F; s2 X
4 h! Z. ^" l5 I% G, s
to poll-class
7 `; R2 t1 c4 ]) z  b+ w5 `1 |end
- i! @4 f8 v4 B' m& S6 Q4 m1 E! I) {8 ?4 o' o
to setup-plot10 ^$ W& [8 W! _8 W# K  c

' n: f# S/ c( R% V. z$ ?1 Yset-current-plot "Trends-of-Local-reputation"
$ U, o8 M! Y0 D# b& Y- K1 S
/ O3 G) Y, m2 r! l
set-plot-x-range 0 xmax

- g% o% t8 ]/ N8 U; f# l! o" \; G$ R! a7 |. f1 m6 A" ~1 W0 o7 _
set-plot-y-range 0.0 ymax
4 W8 p3 k0 K9 Q# t
end
* i6 @0 u+ R$ P/ s
4 h. G7 B. ]9 kto setup-plot2
% S) w, M! t8 s  i0 ^. h% G, v4 c2 S8 _8 S9 N; |
set-current-plot "Trends-of-global-reputation"
& y: n* }1 o. H

/ y5 X3 x: w9 A. M- zset-plot-x-range 0 xmax
8 c, E0 @7 X. U, a+ \. B5 a( b

- V( V# k; q! cset-plot-y-range 0.0 ymax

$ ?' C2 N/ S0 n/ L4 A( cend. O0 f+ Z7 X6 l: w

- {6 Y/ V" |1 Oto setup-plot3' Z: d! _4 ^5 E, C- k

5 e6 R* b* B2 C" X/ k8 E% |- hset-current-plot "Trends-of-credibility"
& @+ p2 a+ t1 i4 }# V
) a0 M* U7 Y# R8 i3 r, j
set-plot-x-range 0 xmax
( f2 X4 B/ ]; L- N8 U9 V+ X+ X
7 q% C4 G/ @& W1 C
set-plot-y-range 0.0 ymax

, g' c- y% r) n) Eend, G& j0 f# m  D: ]- b2 p

+ k. n4 z, d! r8 ~$ z1 T* ~to do-plots' o& o6 j+ E; h6 o& m- ~
set-current-plot "Trends-of-Local-reputation"
# |1 R0 Z) \+ J6 q2 S& \) Oset-current-plot-pen "Honest service"$ n2 c1 ]& P4 S. R1 {; D8 ~) w
end- L# S5 |3 U- w5 \5 w& M4 Z
  B; |% c$ P/ g% G5 A: o( w+ }
[ 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.
. L3 g, c0 I* u0 O4 q& ^0 h
) r' k6 ~! P% M7 @4 B! o6 I# d8 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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