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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:
8 h% i$ @/ r0 |6 zto do-business
0 c* ^8 P! }' [; r( E; {! v rt random 3602 T8 O: A' o  s9 t
fd 1
, z/ f/ r- L6 L" f" ]9 \3 ~* m; u ifelse(other turtles-here != nobody)[4 C4 R( ]1 b! \7 w
   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.
& p, [; p8 }  h2 A: ~   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self      @' _) }/ A: u0 x! T7 ~1 O/ `
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer' a& _* D; C7 i* D& V; S! T% S
   set [trade-record-one-len] of self length [trade-record-one] of self
  E2 P7 b% B% r/ t# Q   set trade-record-current( list (timer) (random money-upper-limit))% ~3 H7 X2 k! z! y7 M% I/ n7 U' E

- @- f" e" ~, J' ^, S问题的提示如下:2 ?4 ?! q- t& W
' p% x1 z7 @  T8 a0 r# Q1 r
error while turtle 50 running OF in procedure DO-BUSINESS
2 c  l7 M9 R0 G: u5 Y4 q  called by procedure GO
6 V+ a6 q+ o; ^9 W; J4 g8 |7 vOF expected input to be a turtle agentset or turtle but got NOBODY instead.) n3 @- U, n- C' T" B' a: p# x
(halted running of go)
; K* c" y  a: r$ n: S5 j, Z
1 K+ m' y& S# J! g0 H) 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~~0 {- K2 K5 }# u* O
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
4 w0 a% ~) T0 e; I" `) Q+ R( Jglobals[; P0 i% O# u6 D6 c/ H/ C9 g7 {0 u
xmax
# v4 h  P) r4 I' W% D2 xymax
  o% v0 Z3 _# aglobal-reputation-list1 f  E: R  Y2 _  y
7 e$ y0 S* ~$ o: ^8 S$ ^. F
;;
每一个turtle的全局声誉都存在此LIST* d- M1 S) V5 s, F6 \
credibility-list
; r5 }. {2 p0 G) ]3 q8 f;;
每一个turtle的评价可信度# p  B1 h2 |( g3 }8 E
honest-service
, z: B" z0 H/ t, L, `+ dunhonest-service6 V; T: y% G) c9 D
oscillation
, B% V( M4 v2 k/ O4 Jrand-dynamic
/ ?1 m( G0 E5 x" I]- _! U" n) \  v: z6 e, u% x' _
9 z+ f* T; Y4 N3 ]' t
turtles-own[' _0 d0 {6 ]- y
trade-record-all* S$ h5 q, l$ @3 {2 h
;;a list of lists,
trade-record-one组成: e/ o$ M7 t9 M: S: ~
trade-record-one
" p8 X' _0 p. @( y5 p;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录) W2 l* j( |& {. e4 h* @* L: N4 S
5 X7 _/ @4 g- f5 [. w/ `' t
;;[
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]]
% V( f# [/ S" f, w+ Q5 P9 @5 vtrade-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]! |/ _$ F2 U) ?4 V
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list1 ~% k, K) Z0 u+ `3 w  K& L$ @
neighbor-total/ a9 X$ e) G  S3 }2 C/ y# C
;;
记录该turtle的邻居节点的数目
5 q; D: l+ B* }5 [1 i$ ~" k  ptrade-time
* j0 Z2 K1 L/ r. n1 [* e;;
当前发生交易的turtle的交易时间
/ X2 M: `7 T9 D8 _! O. A& ?appraise-give
0 b+ ~0 F" q$ b/ ]* J0 r' a% [9 v;;
当前发生交易时给出的评价+ _* v/ _8 t' {8 S8 f
appraise-receive
0 R. x( R( K/ N/ d;;
当前发生交易时收到的评价/ f2 `( H" W: e2 Y0 u
appraise-time- x; a' z7 y( i* G4 [4 s
;;
当前发生交易时的评价时间' q, G  ]/ f2 `, n* \
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
9 }: m6 Y9 H: s/ H% ltrade-times-total$ W- w  x- v* Q) j
;;
与当前turtle的交易总次数
+ F) W, K- Q7 r. A* m) _trade-money-total
2 ^6 b. o, [6 X9 u5 m4 [5 O3 j;;
与当前turtle的交易总金额
& I: u% u/ k9 P6 J& j( P- A8 Zlocal-reputation
  A9 N* M. X1 _* wglobal-reputation, Z* {: p- ^' s# t
credibility: y2 s, Q3 }9 n3 B. l7 O3 _
;;
评价可信度,每次交易后都需要更新% `/ M) ^4 b' g9 Y' L
credibility-all2 h& L! j& B) n% N- ^$ F) k* d5 c
;;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4 M* ^- R4 s5 n5 `" ~  k9 w( ?
9 \  b+ |/ b3 o
;;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) H& |* }, ]. C
credibility-one2 H( z/ Q+ O/ S
;;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
  m% [9 d3 j* T- Dglobal-proportion) N7 Z5 T4 |4 X" P# X. K
customer5 f! e8 S& ?2 R& z
customer-no
; ]$ u( O) c* x) y& etrust-ok4 e8 ~7 Q% N- r& }+ M; I$ A! s0 d
trade-record-one-len;;trade-record-one的长度$ a( g/ g  h* R+ }: |
]
* |4 E' g7 U8 d9 o& m# q: x: B2 D' ?% N5 |  C( e
;;setup procedure
3 b8 b7 Z( a6 ?% F7 j8 Y0 u, N
! a! V. I! ^, ]- v! K3 ^to setup
4 C" X* ?+ C3 {  i7 Y1 @3 l; F9 W* }: t7 m
ca

+ Y" k& l5 k7 h( M# w6 L" @. n
  \  n& Z- [/ `! Z6 }initialize-settings

+ w# g; v- X& L/ b3 D8 J" i/ {
4 }, G+ R$ c/ gcrt people [setup-turtles]

: p# n! u  j9 V& U/ i, N
+ S) i: a! e4 G2 N; J/ X! I- `& |reset-timer

/ u# A( M. Q# a9 Z( J/ L1 t4 P
# O8 p; C7 a" Z) Gpoll-class
. G& E" Z0 i$ p
2 o( z4 S. s+ C3 G2 @9 S
setup-plots
2 A8 c, w5 d% N" o
. D9 m5 H3 S  V; x
do-plots
4 _- N3 w8 Z' C* c
end4 F" @4 K6 t9 G, j& I

$ Y  [: G6 Z4 i; e4 ~to initialize-settings8 F% \& C; V5 A

& X/ k# a9 c- Wset global-reputation-list []
4 x* p* P, X8 j- s+ T3 I- a

; l5 Q1 P$ I  V, P  Z4 c$ Fset credibility-list n-values people [0.5]
5 k7 n) U% n; P1 \  I- s
+ H8 D! M" W% ~0 p. T
set honest-service 0

% s/ p0 n! r3 @* l$ ]  g  [( P" z$ r+ z
set unhonest-service 0
: \7 [/ ?% a2 p/ K# b! T9 B- \, e- z

! I& [& G% {! M: }& m1 ?set oscillation 0

2 d3 o6 m# u2 {" I/ a" u
: C8 q' `. o9 }' O# Z5 Q, `set rand-dynamic 0
2 C) [; o' _4 G2 D/ T
end3 P" q. L) l+ B. Z" T; P
' a. ^* x3 v8 }1 B
to setup-turtles
9 |3 J- z" z" `set shape "person"6 U6 ^# y- K. s% k9 s
setxy random-xcor random-ycor; F6 Q% M% `' I2 X$ ?  j
set trade-record-one []; F( l; X" d* H' \# z- M5 w# p
6 G) b  e. x7 S( o# t9 i
set trade-record-all n-values people [(list (? + 1) 0 0)] : K5 |+ P2 p/ D& q$ m$ C% B
( `) f. I8 t& C: H4 i
set trade-record-current []
" ]  i: q7 B/ c! M  W5 r) {5 u9 Aset credibility-receive []
% W3 ~8 U8 p6 s) n% k6 ^3 O9 xset local-reputation 0.5
1 H. }% F+ t& k' c1 Nset neighbor-total 0- a: r' V) H& [: J6 g
set trade-times-total 05 z) I. e: x- O3 Y, N
set trade-money-total 0* M6 m7 r" B) p( ]. i$ e
set customer nobody
3 E* j. C6 x3 H, Jset credibility-all n-values people [creat-credibility]
5 V! m- E2 p, k, Lset credibility n-values people [-1]& Y0 Y; n* L  Y6 Q# F
get-color4 s$ d" I; d9 J2 U+ U  _- z

, {+ V9 C, k' pend% a6 n+ f5 t4 |" Z# e' l
, M5 f; g3 a; X( L/ L) W4 e. Q
to-report creat-credibility6 |" c* d3 A% f3 Y7 O) V! H
report n-values people [0.5]
2 |  a% v' d; s5 j) }1 \- R' B# Send& u3 q6 C" d$ u+ B& o
$ y8 S7 \- A3 a0 i
to setup-plots! y3 Q; k$ H9 ]9 X6 h. ]0 W
3 Q3 T' u' `. f1 g- g5 w
set xmax 30

* i; m7 O/ J+ v  f7 N# Z. ~* ^  \0 W6 Y) V" W$ w) W* V7 l5 \% [
set ymax 1.0
+ A+ L5 [2 s# _6 g; g

( L6 S) Y: A1 L, Z; V9 y) y; b7 |# Uclear-all-plots

5 a4 F) e) T5 h) Z9 v: K8 ?7 o
! i  g. S2 ~( |5 n, [setup-plot1

; I2 h8 r) U$ |: `- K  P8 n& Q0 d# S
$ \$ j  C, K4 q0 s9 wsetup-plot2
0 r; ~2 [$ F. T9 u" x2 l& m
7 k' W& [6 i# ^' v% m( _
setup-plot3
( ?# [, N0 n& k7 Y
end
9 G2 C/ `! C1 S4 {" |6 Z- H5 q$ u3 s% S% |. ?  H( _0 R" d
;;run time procedures
2 e' o6 V  l6 {/ |/ X7 D. E. h: i! f0 R# K( N
to go# u. F& Q$ V' i1 G1 [

# E0 R, ~: X/ Wask turtles [do-business]

, G0 b" ^3 Y3 {( j/ Zend
% N! w6 C! V/ t! L( B$ s  \
( l- z+ F% _" e0 Y# e8 c( \, Hto do-business
9 [- b3 i# I' E) ^: [7 E3 t

7 Q& A) b3 N& n+ [9 F  L2 ]
$ [7 j6 w+ h4 r) Trt random 360

7 j' |, A. F$ m  N6 ?0 R. N/ O( b: H, G* y4 P
fd 1
8 T/ u, {! h. l, Q1 V

( j% E! y) h  D0 \/ vifelse(other turtles-here != nobody)[
3 V. U# a0 x1 v

% U' B% T9 ]! o+ Vset customer one-of other turtles-here
6 y2 X2 W2 p% z6 C3 H  L

# Y4 R& ?0 m! E3 q;; set [customer] of customer myself

  R) R# R7 e6 m1 ?: c& V! E
, y- u8 s/ m. s/ c$ A3 Iset [trade-record-one] of self item (([who] of customer) - 1)1 T$ W4 I. F, w2 h) X2 N7 ?  Z
[trade-record-all]of self/ R8 c+ b8 N6 z" m3 p; D& q
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
6 k# q% ^* u; L7 V
: f- Y" b( b7 }7 P1 H
set [trade-record-one] of customer item (([who] of self) - 1)
1 e! m+ r9 |! |7 A[trade-record-all]of customer
3 g' }+ P2 M& @

. U3 n# \& y/ g. S/ l* Lset [trade-record-one-len] of self length [trade-record-one] of self

5 T  |7 ?) i" |& ~! x$ F" I
! \% h. o2 d, Q& Q0 V1 lset trade-record-current( list (timer) (random money-upper-limit))
  k3 R5 h4 K* K. E7 g

- u' C) K$ n" Y0 S+ L; A& a: M1 e$ J" a5 Eask self [do-trust]
$ r# z$ ], X* \" h" Y;;
先求ij的信任度
7 G$ }/ l* y1 U8 t, Z4 \# W# E/ b( L9 O) p
if ([trust-ok] of self)
' Q) W! H+ h* r+ x# [) |# K* D;;
根据ij的信任度来决定是否与j进行交易[
- Y7 T4 T* P+ W) Fask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself2 Q$ B2 ~1 q8 r4 K7 ?7 t5 K
* c& q1 P9 k+ e2 n
[
$ ?% b; i  E& _  ~" u# i" `
  ~( P* v8 P; o+ z
do-trade

5 k+ {* S* L  E3 Y! u( S6 V2 ]' d9 j* c# r, C- H+ g
update-credibility-ijl
  U* S8 V2 }- E& d" x
  @+ W+ f; c, f7 X8 e% g5 O
update-credibility-list
1 L. w# u" {- b$ q* @* {2 b
* N2 T. |+ K  O* ]+ D. z, L+ W
' I, ^' g* U  a' H* `8 r$ @# h
update-global-reputation-list
- d9 O% Y) L2 G3 L! Z& l2 z

: v% U. r. Z+ L" J" Gpoll-class
2 {2 ~" S' d: O! J- w; r/ V/ c
( {2 x. @. [8 P# p8 v: A/ M
get-color
% W" B6 ]. U" l" G
5 P6 }9 _% c+ d  F$ B
]]
- ]/ n4 I/ U. x0 M5 O& F% W
. Y( c' p" S3 v, T  }3 S;;
如果所得的信任度满足条件,则进行交易
- f3 L: c* s9 O+ o! d
0 E" l( [4 `& C% j" ?[

- q7 x; ?8 v+ C, B
5 O; P( D& n' a% \. M  j- k; r8 C& rrt random 360

  l- z: c% D6 G  a6 |- J) k
/ V, J2 c, G' o5 A2 Ofd 1

# y+ U; l: ^# J  r1 B9 q/ l/ C+ n* `4 F# s: N' V& v
]
7 }' O/ h' ^- f" _$ t" O. N4 j  L4 K
* n: U9 x5 I( U6 V. o
end
- n/ V& {$ A+ w9 y
& V$ F: o8 |: X/ |* U8 s
to do-trust # O  x" h8 M' c; I; z. {! R. k
set trust-ok False
& k9 Q4 \" {) Z! n9 U( G3 J. I/ S4 Q' P9 d3 y

* s/ P% W6 y% M4 l2 E* d' Klet max-trade-times 0
5 r( r9 f- p% Y/ q. U' a; a/ gforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]6 ^3 W4 b$ {4 b$ f
let max-trade-money 0
2 h% e, ]2 H; G$ n/ h# @; N# Rforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]! I; d3 v5 V" U' {
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
( r/ q& T! r) K! x  R4 [
# }1 c) x; ^( f* w& d* _: e3 X9 K" k+ K
/ |" ?" \2 o% A
get-global-proportion5 S0 d" X5 G( i! v1 d
let trust-value4 \5 x) H* Z( U# W
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)
4 y$ o5 e( g. _' Y5 G
if(trust-value > trade-trust-value)9 i$ G; _9 P  M8 k2 w" c4 v% R; k7 j
[set trust-ok true]
, {1 c7 J9 ]; o& h& Pend( j' Q  [! V2 Z1 _
  Q* X$ Z. G5 Q9 h4 V( a
to get-global-proportion3 R) a! p2 L1 |. k& s
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
2 w3 v! h' f! t. D1 h! I7 L[set global-proportion 0]8 e7 h. w' J+ }) X- l
[let i 0
, |9 s2 g/ t" c" Dlet sum-money 0
+ E9 U0 y2 Z# c& Hwhile[ i < people]
4 f1 i: b5 f* M9 E5 Y4 K2 V/ s+ [[
% t0 ]$ W% c8 D% ^% aif( length (item i
3 f  S3 T3 x% y[trade-record-all] of customer) > 3 )
: ]  w4 X3 \; X* _8 S
[' z5 K, s, x5 ^: w, V
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))  T) G# Y6 i: T) m6 S3 J
]( N' j! }( Y! v, V) [
]6 m3 y) f  y+ u; Y
let j 0' H% g" ~0 h5 V& [
let note 0
& s1 h9 W( Z) a8 o9 H1 r% ewhile[ j < people]# r( M! J/ N9 Q+ y
[$ J) g% F, m  u6 t
if( length (item i& k- J: o% ~* _) Y
[trade-record-all] of customer) > 3 )

/ X0 l. F! {( I( S3 i0 d1 S/ {[. Y% D4 n, a% @  i5 G2 H8 k, u$ H' T
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
/ E3 J8 w: }) B" B* o9 ~) r[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]4 k+ |' }4 s9 f! T
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]3 r& |7 U1 F. z- r# x7 ^- j: n4 k
]* J. F7 _( D1 }; S1 v, Q
]$ n/ A7 L/ A3 U
set global-proportion note4 z' g2 x, F/ Q# v
]
3 w+ X: f: g) h1 R* Iend- Q& [) P* _) ]# O

" L3 E) ~3 P2 w  \to do-trade1 p. E  {$ i/ T: `, \+ `; U1 J
;;
这个过程实际上是给双方作出评价的过程
* P0 y& k1 A; e5 W' u& X3 c* zset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价/ s2 D) q: Z; _" G) A' |* Y, |
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价9 y2 a8 W/ U& O
set trade-record-current lput(timer) trade-record-current  q! Z6 s7 P# ^6 O5 Q
;;
评价时间
  t4 r6 u6 l* ?3 k# c  Sask myself [
) ^+ ?) o# r2 F: [update-local-reputation& {: B- l  d- j1 F; v
set trade-record-current lput([local-reputation] of myself) trade-record-current, j8 I& t, c9 G& D
]
' q0 n- c" S8 S) L9 D0 R1 jset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
$ a$ y6 ]6 D7 R2 q7 J  {- D;;
将此次交易的记录加入到trade-record-one3 J1 q+ z6 D' h
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)9 d4 b1 J0 \+ g% h4 D4 E; q/ h, Z
let note (item 2 trade-record-current )
) W6 O( X  O) R' ^set trade-record-current1 B9 J% @* ?; G8 d
(replace-item 2 trade-record-current (item 3 trade-record-current))

9 h+ z. U7 B# O6 u+ ~) Zset trade-record-current$ y9 m8 V3 f% W( t/ O& p) @2 R( b* V
(replace-item 3 trade-record-current note), X' g5 M: ^" v8 o
7 _3 w' c5 Z/ S! |

* k( G6 A* b4 o% Z+ P: iask customer [
) Y6 I, g. n/ d5 }" G" @9 H- tupdate-local-reputation
9 F+ }; i+ _9 M+ Vset trade-record-current
% Z6 R3 c. T* k/ A8 {(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
& k1 U& y0 d. ^' H0 F/ [$ x- ]5 t- d
]
0 [1 _6 D" g0 o# |! O) \* _$ _6 w4 I+ r

0 s: y. ~1 f) A+ pset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
0 h* N, U8 |- E
5 A) J: H; i* W% {1 D+ q
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))) Z& p; g1 w# k, B
;;
将此次交易的记录加入到customertrade-record-all8 a& v; l3 z% F3 M
end
( ]4 e* U: V5 ?
8 [+ L0 X  V3 W4 f5 g; pto update-local-reputation
6 ]$ F# k# s+ @set [trade-record-one-len] of myself length [trade-record-one] of myself1 Q8 s  N( u& L4 z; f( A2 _6 N

, P# k6 o0 C9 f+ l. Z% m$ J& R# g2 F" q) n# D4 X
;;if [trade-record-one-len] of myself > 3
6 Q* Z' {4 f6 R( Y! p# M
update-neighbor-total( t- x2 y+ v: _4 }7 U: |
;;
更新邻居节点的数目,在此进行
, i) P0 _. F1 ulet i 36 \' |. v! f/ n1 E5 h4 U, ]$ P2 }5 P
let sum-time 0
# l2 z2 w; \3 A: K9 A/ ?$ K3 uwhile[i < [trade-record-one-len] of myself]" K  m( e/ R$ b$ F
[
$ Y% ^7 m: `' q9 y. i8 o3 c0 q2 jset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )- n; d; _, L+ B! z
set i
# D# A4 Z  e% V+ V( i + 1)
% i# V" i/ V. q& H, I
]
/ [' F0 _# o! K) nlet j 39 U- @* t0 H4 _: S# h
let sum-money 06 e, x' t$ V  P# o$ c5 ?
while[j < [trade-record-one-len] of myself]
$ E1 D& l% {5 k; K( {[8 a; l5 ~; H7 G% a6 U# b" @0 Y
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). B8 @  }) [! ]
set j
& J# i2 F" l7 K9 V  i1 x1 K2 N( j + 1)
& F0 w' d+ O% D4 k
]
) m  p, k; `# e. f9 vlet k 31 ~, A! g3 F1 K3 I6 j/ [
let power 0
- d6 T% |: m6 W* Alet local 0$ i$ t4 K' G$ \7 B0 Q, ]! d9 T, w
while [k <[trade-record-one-len] of myself]
2 V  _1 H5 R4 q8 K) N5 ~, D& B[1 g+ E% k( Q* @/ w( U3 }4 z
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) : R5 c- g2 g, V0 d
set k (k + 1)/ q1 R2 c0 i" R% ?1 c- e
]: t+ e" i, m' o: M5 ~
set [local-reputation] of myself (local): {* e+ ]* B5 j/ S( E& i6 Q
end
" R% j' z) w9 Z
$ L: O: I/ n( bto update-neighbor-total
) u; g9 [3 ]" ]5 V4 [
* ^: t# t6 R; b% o  j' d% qif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
# ], }) b; w) g" A
4 f5 K/ b; R7 T" k0 o$ @2 c: |. g
! O8 P' A: a2 _0 U7 V9 z& S
end" B; Y, m. ]% U% G# s

" R- ?  _& Q8 {. k( `0 k$ sto update-credibility-ijl ( t7 y9 G) d0 G8 ^; S6 s

# y" r+ }9 s' h;;
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。3 ]6 Z0 q# Q" Y- q2 O
let l 0
+ O/ T/ S0 d7 uwhile[ l < people ]
2 q% _; }0 z4 s+ Y6 f3 K;;
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/ }; {) d3 Z( R
[
+ s0 H9 s( D% p" K8 _; ]# p9 U, zlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)2 E3 d2 E. e7 s% l
if (trade-record-one-j-l-len > 3): c, n+ r: T9 A  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
6 M3 k4 @! f9 |4 S4 c$ v* \% ^let i 39 e4 z" E4 d% n( b/ J
let sum-time 0
. C" f7 D3 r" M3 \while[i < trade-record-one-len]% e! y1 [- s9 ?
[! Y, d) a) V; v! c: u
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
& L8 I  E2 X' N  j- pset i! c* q! U4 U6 C- l
( i + 1)

* ?9 e! u+ o! m) p5 e% G" ^]; ?& g" p4 F) H
let credibility-i-j-l 0
/ Y9 {# L+ a# C5 s* |5 L;;i
评价(jjl的评价)
/ F  |$ R) M8 T1 h" w) ]# s3 ilet j 3
; `' e6 J9 X% k0 ]( Xlet k 4, K" }, r- `3 e7 @
while[j < trade-record-one-len]
" t: j- t  G( F0 F6 X[
" T9 X8 k, q4 e- p6 @7 A) N3 twhile [((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. A2 e& x& k: s
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)
( c% N6 z' s6 t$ {9 c; r( Cset j
- j( {% b, p4 q- V3 o$ S/ i$ |! u' Y( j + 1)
: p$ o) y  j/ w3 s2 v5 o
]
8 t) Y4 `/ L% U- |$ d2 Wset [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 ))4 D3 \9 W1 A0 i# F

# `8 R' k7 Y% C
- q( c* W0 X! j2 T  M6 e
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
7 v; X( z, ?- s# q1 ~;;
及时更新il的评价质量的评价. M2 N: s: ~8 B: e7 }
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]* h1 i7 O: V0 \! W: U! O
set l (l + 1)
2 H" x& w. T1 [' B]
8 X! I; W: h/ \  I7 I7 P  Jend
8 R* L% `/ D5 B5 N" S
& Q# `. C  i7 j5 C+ g  Cto update-credibility-list
- x9 a0 P0 f0 Tlet i 05 |) r. P' G/ C8 I  X$ h' E1 B
while[i < people]
$ E1 m: K+ ^  u$ p1 x' E" P[
% ]  v9 V: Q/ v$ N% j+ T+ J! Flet j 0
% b9 o! s& X# r* ]8 ?, M$ z2 Z; ?let note 09 k% `8 @& w  N' v
let k 0; [* c# l" V8 T$ B' x5 |- O! i: Q
;;
计作出过评价的邻居节点的数目
* O( C# l6 M4 L, Zwhile[j < people]/ T9 T( d: T9 X5 q
[
+ ]" Z4 U% b# I* sif (item j( [credibility] of turtle (i + 1)) != -1)
0 ~( |/ D& ?' a# x9 @- K+ X8 I;;
判断是否给本turtle的评价质量做出过评价的节点
. y6 D$ O2 I# y: d[set note (note + item j ([credibility]of turtle (i + 1)))& d( o' O2 i/ L5 F7 {2 ?! H
;;*(exp (-(people - 2)))/(people - 2))]
9 k. P: [8 [" k& R- ~$ j. K, [
set k (k + 1)7 Y2 ?* I* f% S  D, I4 W- x) g" [
]
4 }) N8 s, q, _; U" r1 F5 Dset j (j + 1)1 w6 V! x* e' L2 L! d4 i8 t8 D
]
* F, b7 j& k# T. i" W, f. |set note (note *(exp (- (1 / k)))/ k)7 u( m9 j& w8 Z1 X: h
set credibility-list (replace-item i credibility-list note)5 v8 f$ ?# [6 R7 q0 W* U" g
set i (i + 1)' k5 w# c; @& R2 L0 r/ ~7 X' |- _
]% F' @8 o/ d, m. Y* u. Y- H5 o+ O
end
0 T- k2 c5 ?* d* _  c- w
# b4 n' L9 f, `! f' u; lto update-global-reputation-list: G# D) B1 ^# O( Q: I; W- Z
let j 0
  G7 r. ?7 Q) c/ ^, ~* Y: a; Y* Ywhile[j < people]0 K8 H/ C' }  R* M' P
[
( S" H0 l( D* _let new 0
3 b2 y* O0 Y; ~3 T) G( k;;
暂存新的一个全局声誉  F* Q- J1 r% I+ o
let i 08 u' B$ U5 W0 w1 E: Z! n- l- K4 w
let sum-money 0
; W, G. b5 n' K/ j6 k3 n6 @9 vlet credibility-money 02 I/ E# n0 s& P* O6 \
while [i < people]+ @2 b$ ]* X2 x- r3 V; l
[
6 T+ U" C: c& ]* ?, d( xset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
6 m( j5 K) q  N% cset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
9 {8 I  A" S2 k" Y, F$ Dset i (i + 1)
+ I7 ?" m; ?0 W- P]
6 r5 |9 T1 t5 f/ n) K2 z6 rlet k 0
; G( p4 e" s3 P* klet new1 0
* M6 s! g1 f% G: m8 \6 qwhile [k < people]9 C3 w; u6 l5 ~% ~: q5 {( [; o
[* B- T( L. E; a* F1 z' u9 v
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)
% u$ o; L4 t+ u/ C+ g1 }1 ]set k (k + 1)
6 c0 m3 V7 u0 H2 O6 S# W% w]
2 }& A4 F5 P/ K: {6 Cset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
4 D) D4 m4 }% a0 A4 eset global-reputation-list (replace-item j global-reputation-list new). s7 P$ r0 K  A4 z7 ^" }
set j (j + 1)
1 }$ `  t. \0 C# f]
3 b( H8 f& _. S' kend
2 @9 ^2 N/ \' A; }) A0 s( p% W# a
  W1 }1 F' n3 V+ o3 a( |: `  e
/ `9 s3 V! ^; [, h0 E& ^
* X# F! R2 X2 |to get-color
& H6 H, O  a" S' D$ `8 J; O$ X* L0 T% `
set color blue
! l% k" t9 C9 }) S3 u
end2 I) [; V2 i2 [# v, L4 V# s6 y5 a
7 }! w( ^) m- A' K  Z
to poll-class, N( i8 `! @& v. i+ w+ n6 ~
end/ H! U; U4 E( m3 p! ?  Z) L

/ h' t5 F; c, \9 L! K7 sto setup-plot1* r4 N! A1 J' \% q3 g; R9 h" Q, l3 U
' r# O' T. i) X$ ~0 ~) Z0 Q9 _
set-current-plot "Trends-of-Local-reputation"

2 z* n4 T! o: O" F9 R
( |5 e$ E4 L, s) {set-plot-x-range 0 xmax

0 E% a: G- v1 h$ ]% E
8 L% s& ^9 b- D6 ]7 Jset-plot-y-range 0.0 ymax

' s! ^! j$ a# wend
8 }3 X' _* @* X$ l, U3 D) \+ O/ B. r4 }; c
to setup-plot2" g" C% `! j5 c" T7 U6 F' h( Q' j8 |$ @

) s# _1 N+ A/ I- [set-current-plot "Trends-of-global-reputation"
4 K4 i6 R$ [9 k2 [
, m  k  H4 v7 h4 T+ v8 u/ h; A8 r
set-plot-x-range 0 xmax

9 B! F2 P5 ^  H& j+ c
" ]- q$ J) L- r' z" K4 mset-plot-y-range 0.0 ymax

2 a( o, g4 v0 B% f$ t/ Vend
5 N  t5 x" n2 D; X; ]! g: X. p- C
& w" D7 r" Z# }" r0 Fto setup-plot39 k  k- g+ L& m+ f3 y
$ ~* f" `' T9 C3 ^8 W9 @
set-current-plot "Trends-of-credibility"

9 G2 s3 N) u6 X! S- P  M/ I3 U% C1 B$ X
set-plot-x-range 0 xmax
! F' q% B& Y) \2 s! O$ d0 ~
* B' B( j/ H' G$ z# q
set-plot-y-range 0.0 ymax

! y% M- m5 v: Y: t5 J1 s# Pend
# _/ ~8 S, l+ T- ~0 ]* I0 v) i9 C7 v, I6 ~
5 G  H+ J- ]! D1 m5 ^; ]6 dto do-plots
& S0 Y8 }( b* U9 G# `0 |set-current-plot "Trends-of-Local-reputation"
  V" n# w5 i$ w* b( ?, fset-current-plot-pen "Honest service"# c3 F1 r6 W3 X. u' U* ]
end2 N; b' t6 y6 t- p
2 r$ m& g; [' z! z- }
[ 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.
. h3 j" G6 q5 E5 V# ]) g7 Q& D/ x7 Y
这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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