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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:
7 |/ ]8 ]' U1 Y3 qto do-business
. e0 x, O9 j) Z rt random 3602 y2 X5 ~  y- G9 i4 p' ^
fd 1! U* n9 _1 N% K( W0 I
ifelse(other turtles-here != nobody)[+ Q4 Y% |+ ?4 V* ^3 P6 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.5 v& `8 H1 q2 k1 }* W) l; \/ @
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    7 Q/ K, s% u3 A4 [- C: x
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
: K4 A) \3 S$ a3 S8 w1 r' k   set [trade-record-one-len] of self length [trade-record-one] of self
' e% @/ h# x6 N& V9 I   set trade-record-current( list (timer) (random money-upper-limit))8 W' J3 h2 O6 Y$ O' S
. i* G" \0 {2 O  K' M" e& p: N
问题的提示如下:
. D8 z: P& I9 t: p; a% R$ l- @5 U5 A' k  m) G5 ?
error while turtle 50 running OF in procedure DO-BUSINESS
- L* {8 w6 n; B$ l1 }/ C/ U" A  called by procedure GO
+ I. E) E$ J& f, F& COF expected input to be a turtle agentset or turtle but got NOBODY instead.
8 O' p* R- g6 A) E% g" b
(halted running of go)
/ `/ X; V' p; C) q* q
. r' d8 u8 d) v/ A7 [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~~
$ n; L6 U7 e# D. F) k  ?' U6 T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
# u# Q) d# |: N5 j9 Mglobals[
( r6 C( ]. H2 D( w; z1 T9 exmax
1 b% a) y+ b" B) L: {. }3 e9 pymax: h4 H6 M5 G+ ]- z; h$ u# v
global-reputation-list
7 A" b: o! U' ~) r) z4 N
0 \; i- D: R' i8 m. p( h* k/ c6 Z;;
每一个turtle的全局声誉都存在此LIST! `6 O6 x/ b: P( J4 r( r8 v
credibility-list
8 S. Q- s' V! P; R8 e' z& s+ x;;
每一个turtle的评价可信度
3 ]: ?2 D7 g: L7 I: z' Khonest-service# H$ o; q0 }4 O8 t% Z1 n
unhonest-service8 T7 e( \% X) D  \( s- z
oscillation
6 |- l& @" K5 hrand-dynamic% r# U1 B) N' z! C# ]4 Z% e
]
7 V* W+ \) c7 q, [0 t
  e0 ^( x+ G8 L/ Y/ g# ?5 ]( mturtles-own[
7 M3 a5 L) ~* T7 qtrade-record-all. ?* S3 X7 Q$ k0 l( i. v0 r
;;a list of lists,
trade-record-one组成. ?3 G8 A. j4 p: `3 \( J: L
trade-record-one
( `& j6 A  X9 J' Q  a, ~# u: }( h;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
% J; ~+ L4 x6 \3 H/ I0 E5 g6 k  u2 U3 |" W( O- O) {
;;[
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]]& n+ I- o6 e  |; o
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]
; b4 p! Q, R2 J. f* Acredibility-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) h2 }: X! ^2 ~0 v( y
neighbor-total) l$ Q* p/ T$ _
;;
记录该turtle的邻居节点的数目. C3 M2 k0 t6 p/ a. i" G: a
trade-time; n+ p8 c! t( b9 u
;;
当前发生交易的turtle的交易时间
. h5 @# Z( ~3 O  A0 Bappraise-give9 I: M6 q+ G: r$ M5 U- W
;;
当前发生交易时给出的评价# R" b7 E; A, p& V
appraise-receive1 ^! P) C" I1 f; x" N( f
;;
当前发生交易时收到的评价6 b  d* n: _8 U7 f+ j) ^, P9 f
appraise-time! O' o' U+ h6 |. d; F! b- K
;;
当前发生交易时的评价时间& [4 L4 `. h" ]- e: g
local-reputation-now;;此次交易后相对于对方turtle的局部声誉, O4 y& U6 q: S) s2 s6 K) T' P
trade-times-total
. S. H! R8 q$ b;;
与当前turtle的交易总次数$ ^- ?" A* H7 {1 y# t! q
trade-money-total5 c, K* a! u2 X; f- J% W
;;
与当前turtle的交易总金额% z& X( z1 K4 P1 ]) k( A. i/ A4 Z. {
local-reputation
6 ^+ c8 P8 Q- K0 E  j* kglobal-reputation: U) O' Q+ j* P+ v* R8 @
credibility3 u, F, A9 o  C' M, X
;;
评价可信度,每次交易后都需要更新9 [; h) T* m8 ^' u
credibility-all
- [7 c; m8 ^- c! [3 F* p+ d6 @;;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: A7 H7 V0 R8 |$ ^- ]3 c( Z
( v0 M; q# G7 d
;;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# B# a& i+ E# y+ v# l
credibility-one
+ D( T) X) h+ J, p& b, z0 e4 A, ?/ _;;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 Q, J% f# R' t; lglobal-proportion5 ^* p& k& G7 V8 `. S* ~, H
customer% J6 a9 R1 ~2 V
customer-no
: l7 Z9 \# ~" n; c9 N. w2 @trust-ok
+ B. U) _( e8 G& K! P- g4 H* Vtrade-record-one-len;;trade-record-one的长度, m, P2 [: X$ B
]* G. C) d5 l) @! I$ g1 ~

: h; E2 I( d7 [" a;;setup procedure
! Q( e  b; v; l! n4 t: L0 m: H! x/ X# Q3 R
to setup  ?: K) N0 [# K0 a8 T$ z
2 @) }5 W0 ?4 h; c
ca

. G( \6 w# ~) h2 c; S# F& T
3 O' c7 d; c% F. C/ F. G$ a1 o) Uinitialize-settings

+ Z! V% _2 X) D. w8 b6 k
. t: M+ d" g, D. b" K  P# ^4 \crt people [setup-turtles]

. g/ ^' C' Y, q: w  [( ]8 h& `! H; k. H! |: H# V
reset-timer
! i/ ]  {% z1 b$ [. r9 D" ~' M/ [
- N) r, C; F3 |8 q; q8 n4 P& S
poll-class

) C. a5 d7 @" y" t6 R6 V2 S% L: ?& p3 U2 V% J( q4 M9 a! E
setup-plots
$ B- e+ R2 w/ C

- D- L/ G& U1 [- ?do-plots
; ]( C% y1 z  d5 M1 l( A" J
end
/ u3 `% `2 I, w, ^
) h0 c+ u/ H3 H3 M, `) {% Jto initialize-settings" q( K0 `' L  w- _2 n

4 ^1 h5 I0 P7 V  k( g* Tset global-reputation-list []
! y6 g; _! ]6 m% r0 h6 N6 ^7 O

: W  f5 q  b6 R! b5 |" |set credibility-list n-values people [0.5]

3 P9 g% u2 s; c0 G! W2 W$ w: y) A
3 H/ j: ]' b% b, Tset honest-service 0

# L. l0 \  [7 R, c% ]8 Y& u" \6 U6 q% O' v1 t* q
set unhonest-service 0
9 _' V' i8 A& }( M. l

+ w: {  t5 c; o/ _3 yset oscillation 0

# w5 R& @( }" S- L% o- D8 R! g
, b2 z$ g1 V  S0 v/ O& F$ @set rand-dynamic 0
/ o1 \8 T9 C( q* n' W1 s3 D- D
end% h) A- y. D8 g: [
2 f  ^$ t- n, I8 Q! g
to setup-turtles
  y5 ?3 Q5 M& c; a8 f, }set shape "person"9 w5 Z: Q/ U( B/ a4 E
setxy random-xcor random-ycor
: r/ ~. n/ u7 q' yset trade-record-one []  Y; l3 X5 m+ A9 G/ @

. X% p3 ^, b  Rset trade-record-all n-values people [(list (? + 1) 0 0)]
8 t( r' j0 |' l" c6 S. W; b/ s

( z" y- l8 B% m4 r, Z. n( tset trade-record-current []
8 O9 r5 X/ e+ X" e1 @3 dset credibility-receive []$ q9 S7 S* t6 ]- a4 S4 `8 w/ h2 ?- x
set local-reputation 0.5* z3 r1 q) B1 l, ~9 t7 F/ ~
set neighbor-total 0
( M) ~, S1 ^% [& p+ z) Oset trade-times-total 0
! r( B7 T5 E+ fset trade-money-total 0! S) ], ]- c7 R; a$ M3 |8 S
set customer nobody
$ j" _* z. ?/ z8 E! j. v5 j: sset credibility-all n-values people [creat-credibility]$ |: z# E& q9 m, U/ v" W0 A$ |
set credibility n-values people [-1]) [8 F" n. X: z9 l# A% q
get-color
7 c, x7 H: A  g3 @( e! z+ ?
( V7 p6 V0 S9 `5 K3 ]6 G
end
! B3 a( h6 J" b7 @# {! V7 b" G( Q: {1 v: W  Q" H
to-report creat-credibility/ B/ r2 G7 q6 q
report n-values people [0.5]8 A4 O0 H) S1 }; N/ N" q" J: Q
end
. l* K  \, f, p+ d( t  R" s3 C' C- L1 u" \! v  g7 g1 n5 P7 z. L5 ?3 f
to setup-plots  `- F" Q6 l! W$ |. _1 c6 I

* W+ k7 D" L1 k. q; R2 |set xmax 30
4 B7 x7 g" P) d5 V

/ o' h( l0 z# o& [0 k; t0 Y0 U4 vset ymax 1.0
) t  b; R; s3 S3 D8 e- ~5 |

/ Z7 `; }9 ?2 @+ b! uclear-all-plots

( A$ y. A+ ]$ R$ ?% F8 M9 H% ?
setup-plot1
8 }4 e2 @0 H6 v6 x$ u

% u4 Z4 z/ b1 g6 Wsetup-plot2
, H  w6 z4 W2 q% j: p5 e8 p
( S, R& ~1 G6 s9 g$ `
setup-plot3
5 W& j5 X, J9 J1 Y& k5 {+ t
end. R( k2 c& f  I
. Y" s6 v4 e; V$ q/ @
;;run time procedures: w$ j- @. h" _6 a4 C$ |
; {" ~8 N7 z1 g- s3 A
to go
) i6 }6 g, {2 z7 ?4 ~3 X) O  h- N/ l4 N$ t" I) K
ask turtles [do-business]
& t, m3 I) t' B  E# ~9 |3 F
end' K8 D: c) e6 U* v$ ^, ?% L
" g0 x: K1 y/ w
to do-business ! ]: _" S2 o+ T7 h; `4 [

7 |. l1 }3 c* {( E! d* O" T1 C" W- ?: |- K
rt random 360
$ F! v3 b* H' r' e: j

$ ?- d( S0 T& U: Pfd 1

7 f  A: P+ V$ r1 Q$ O
0 t& s4 [0 F" ?) Sifelse(other turtles-here != nobody)[
3 y0 A: A$ F. T
6 W" \  y# H% I" `
set customer one-of other turtles-here
7 k) {, k) t% r" h5 S2 S  S$ q' ]

8 Y0 U" C( t/ \% l  Z  _;; set [customer] of customer myself

2 R7 L( Q3 H3 c; s& P6 q- P8 F  n% r& E6 N* j
set [trade-record-one] of self item (([who] of customer) - 1)
6 {' d" P6 s2 ^[trade-record-all]of self- t' ^& L3 V: H" z7 z
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
& ?* e$ X3 S9 E
2 n: Y. b% a7 o
set [trade-record-one] of customer item (([who] of self) - 1)8 t$ W/ m: o" f3 Y: x
[trade-record-all]of customer
( S" D! W' A8 |# |4 |. s) |

+ `# [4 Z" K# ^2 Z8 Lset [trade-record-one-len] of self length [trade-record-one] of self

1 W4 B) v7 q1 I. x1 Z  K  T6 P6 N6 J6 {) L* ?
set trade-record-current( list (timer) (random money-upper-limit))

) r1 K! W# R+ N. X! x1 Z$ M1 G$ @
ask self [do-trust]
# m. M7 Z8 L4 ^: [- W0 q;;
先求ij的信任度, K( ~4 a6 v( Q3 s- V2 [

& p8 Z3 U$ q# bif ([trust-ok] of self): }) @/ @2 t! z: ?& }. a
;;
根据ij的信任度来决定是否与j进行交易[
! F1 X! h3 H1 p7 s, c- wask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
5 M! ]" k9 ?( K; e& o3 S
' \; P9 y$ T9 V* V7 |[
$ H0 G+ d- v- ]' h) ~: Z

) x) n9 j5 t5 ~do-trade

5 W. B$ f* h  `9 {0 P; B3 l2 D' D/ S8 Y1 f" b, C2 E
update-credibility-ijl

- R) c2 C8 ?6 Y5 ~0 X  V$ p- Y7 _5 o/ u3 F4 o6 J
update-credibility-list
0 i; {9 ]1 {6 ]! k3 z9 S

: ?0 _6 l: w8 N
8 t4 @1 N0 C5 L1 X+ Y8 `2 lupdate-global-reputation-list
" N! u" o9 Q5 r) H

4 |  T1 F% ?2 e3 H# E3 Y9 {+ Qpoll-class

% v8 ]2 G5 ^% l+ h& h- _4 N/ _4 Z. Z! C
get-color

% E4 {: h- C: Z0 s  S
6 }  Z# x3 D0 p6 p9 v- c]]. `. t/ ], R8 b/ `$ U! E
. t1 [& b& }3 c6 q5 a% G
;;
如果所得的信任度满足条件,则进行交易; L: d! N$ E6 q+ z

, S. S$ C3 A, [[

# c0 X. a4 R8 G' z% o; }8 A: o( y) A" _( {' \: v" M& A; Y
rt random 360
  j) B3 L% X* D/ k) M1 f; k* T

! p  y' ]8 p5 `" R& sfd 1

, a" |1 p, L3 H0 u
6 u2 L$ b8 Y; }" B& k, u]
2 A. ?$ U. |; p! k
- P5 m5 [5 U, B5 Y) O
end
, r! n/ j0 G- o7 z5 Q

, `' D, b% O7 p/ Q3 ito do-trust
  f, ?3 j; o/ j8 X8 h( D4 ]0 [set trust-ok False
* I$ ?% f5 ~( U; a2 }! |
) G. ^$ U5 U, `, @0 {  K
1 j# h7 W. E2 G
let max-trade-times 0
5 O) e- c( A  |$ q( }foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
5 j2 P4 R* c6 K7 w/ Dlet max-trade-money 0
3 G  g1 j# O4 ~' O% jforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
4 I5 q5 u/ `9 ?, X8 p  Nlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))% A. I; I5 o* q$ _/ v9 q$ Z
3 I1 U1 t2 h! u8 ]$ b4 j

5 G. U9 j* u- mget-global-proportion
6 K* ~, ]! Y7 J/ Y6 n$ F3 c/ a# m" ^let trust-value7 a, W0 V1 I, @1 z1 l, l# |  X3 H
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)
, c2 o* ~. E- W3 B
if(trust-value > trade-trust-value)
( j: W4 e9 ^# L1 Z5 I$ Q+ _[set trust-ok true]. f* i8 s$ u$ Q3 R, a' ~% {
end7 I7 ?/ E  H+ S% ?* p/ U" C
; _- G" ?* {2 j/ q; h9 v5 D& V
to get-global-proportion, o& L0 _- \3 U2 L) L, [3 [
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
+ b3 U" Y3 |9 y6 g' ~[set global-proportion 0]
5 |2 m4 @% {1 N% E[let i 0
4 D. Y0 |3 x8 s7 {4 rlet sum-money 0
" i# M5 X& W/ |; r% v2 B0 R. ~while[ i < people]9 H) l, @$ u) w$ o4 }
[3 j# \" f& F: }$ C% h
if( length (item i  Z( H, t/ I% Z: C9 [! W5 X" N+ P
[trade-record-all] of customer) > 3 )
0 e) ^4 C- b; D- y" g
[
8 x  h9 n2 }. n- Q+ l* Wset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
3 z% }& _7 r: n( `: I* `' Q$ L( u+ N! x]& R3 E* R' {$ N& T; S( D- t6 O8 u
]
+ A9 Z, }; \3 P( x" Tlet j 09 P( d" }1 S2 F5 n4 h! m
let note 02 S. p* ^3 n4 q) M$ q0 k2 ^3 h( |8 y
while[ j < people]7 m' r; p- m1 b2 k1 [6 a( N
[
8 {  ^5 t0 T7 b+ ~6 N! E- p5 Z8 mif( length (item i( B* _3 V! H8 e- k
[trade-record-all] of customer) > 3 )

  O3 W4 Q' H; H, M  A2 }[
1 [6 S; x0 y# B, sifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
2 w3 d7 j" z) ]* \4 @2 \( G[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]$ M% Z, N. k3 z# i& G: O
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]! k. G+ O" f( a) E8 F0 z( E9 {( T
]3 t" L* j, v2 X% l" g
]
& g+ O7 F+ U. [1 O. O- rset global-proportion note
3 H& |+ m* r% }1 o]
' T& g) {! l7 E, W0 kend+ x/ o( ?( j0 g  E+ i6 _) R! y
% i3 r5 x' D) C6 I7 ]0 v' r' a$ {
to do-trade# I; C1 C. s, V& [% ?
;;
这个过程实际上是给双方作出评价的过程
4 l- Q* j: i) h7 O2 M7 Zset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
& w2 g- A/ o3 Gset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
5 i$ P9 f1 p# {7 {set trade-record-current lput(timer) trade-record-current$ O  X7 S$ v% \7 p2 i: V
;;
评价时间
' {2 s+ Q  b* V3 @- eask myself [( b+ N% m9 W1 |/ M+ t3 _) T9 h
update-local-reputation5 Y% ^) `' g8 P6 t& B# E
set trade-record-current lput([local-reputation] of myself) trade-record-current
: ?, C( H' l6 M+ V, g% H], Y6 G+ T+ R" w! k6 r4 g
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself" Y& g" i2 X6 ]5 {
;;
将此次交易的记录加入到trade-record-one5 j+ z$ S% N2 d$ n3 x4 ~) P
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
5 }7 _5 _( K  _8 nlet note (item 2 trade-record-current )
' M, B* U3 j+ {1 p  kset trade-record-current6 \: q0 m' h) R) D3 y! a! j1 e# ]  j
(replace-item 2 trade-record-current (item 3 trade-record-current))

9 u1 M* i* s! G  c0 |set trade-record-current
3 C: `- a* S6 K) M' c(replace-item 3 trade-record-current note)7 ^$ R% l# `6 h3 b9 o

) f0 F* ]% t' q) `6 {7 O

. K& |4 A7 e( f3 `/ Nask customer [5 s9 v& D0 Y, n. J( b1 d& H
update-local-reputation% \, k& H9 s$ v/ m% t8 w$ ~  `
set trade-record-current0 _* P* j2 X5 R: U% M0 I* x+ U6 L
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
# m9 w- [, ~" d3 y- Y1 H
]
* V# \0 G% v( w. J( V; Y- _1 n6 D1 S
4 M3 g$ @5 f  y6 D' c2 t4 ^
3 b5 O0 i+ H- S
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer7 ?4 e1 C/ G2 H/ S1 W

9 W+ g1 U0 b. a$ A# u# Oset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
$ i( h0 N3 J7 k7 Y& K;;
将此次交易的记录加入到customertrade-record-all
  _3 I: I3 n, F  F8 `4 oend" [# q9 U1 h# n

& H3 E  G# A1 A/ ^  ]. gto update-local-reputation
1 c6 y; {$ M, J1 xset [trade-record-one-len] of myself length [trade-record-one] of myself- q( i1 ]8 \' r  s/ ^; G
1 }* ?5 N& r$ j  j

7 i# T# H- K* |) h;;if [trade-record-one-len] of myself > 3
" K3 N- W% r  b
update-neighbor-total( y: ~! ?2 e) J& G1 s
;;
更新邻居节点的数目,在此进行2 j$ [5 k  c4 J! N
let i 3+ T8 O. r& ]' j% P& \9 E8 K
let sum-time 0
( [7 X1 D  R0 nwhile[i < [trade-record-one-len] of myself]+ W! G- T9 |& o6 J' J4 G7 r
[
: [/ t) ~& q# X( g  yset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
  M& c0 r1 K9 I8 q8 ]+ M0 m$ _! ]set i5 V2 }* D' M. u; z9 y* Y- Q4 a
( i + 1)
0 X$ C) G% E# z9 @7 r4 v* v
]
& D4 ~0 |/ v+ D, Q5 y0 Dlet j 3
8 h' Y6 }$ r2 k1 ?2 g9 tlet sum-money 0
% B9 n4 ^1 r, x( e! \while[j < [trade-record-one-len] of myself]5 h+ {8 L, {2 x
[
# k, G; h: h4 |% \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)
3 ?6 ?, p, R' l% S( aset j
" r2 D5 Y8 h% q( j + 1)
( V: ]% p  ]) R8 M, f
]( ?; w6 F/ G  i- ^) W
let k 39 ?+ @+ w4 }( W- N
let power 0: j4 [4 d/ V$ S2 ^- P2 w) X
let local 09 f1 [4 A. i" \- X# g5 m- |& W
while [k <[trade-record-one-len] of myself]
: I/ Q) p+ l6 X8 V' J8 u[
! M- k+ R. i! Y/ M  Hset 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) 7 b; I3 I! ~# |* X5 w% K$ }  F
set k (k + 1)/ q% V' f% H1 _/ W, a& A' B
]
- b' X' x( H- n/ A4 d$ ~set [local-reputation] of myself (local)
2 Q% s! Q$ n2 \! D' Gend/ h5 x5 Z  I- H' Z6 p

! w. g- Z: o4 `8 W3 Qto update-neighbor-total
, K+ ~% f$ J0 k8 j& s' j5 `. x0 b* b' d; w; w9 I8 n7 L- ?" Y% e# S8 P
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
( z! ?) ^" Y1 C
# _# |/ E( f( z

* ^( c& j  o& m, N" B; h" Nend7 e/ Q2 i& l4 g  o( H
: ]7 E/ W$ k/ P  ]3 T
to update-credibility-ijl
: _0 s6 n) m. P7 y% B
) s7 W% k. d' Z- Z! S8 P;;
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。, r; `+ ]5 H1 a" C/ r9 `
let l 0
0 P, M) J' x) X1 A8 H+ Owhile[ l < people ]& P6 F3 w2 D2 ^% F& m
;;
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/ I" Y0 R$ n; y: v
[
5 z( F" t  c7 D7 v) I' a3 K2 olet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
0 q& P, e# J8 `- Mif (trade-record-one-j-l-len > 3)
9 S/ f( s4 v' C3 I[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
% q: D# s7 Y+ R) `) ]+ Xlet i 3
9 R/ @' ], t2 j) |- R" {; Nlet sum-time 0, K. n6 m3 q. Y" R
while[i < trade-record-one-len]) K  j. c: ?$ n5 b: ~6 W: Y. O
[( z; a7 u: Q. s  a+ k
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )& v7 |) k& d( i9 Q' Q
set i! b0 n3 f& D/ _' U# c8 D7 T3 y
( i + 1)

* k% l7 ^4 |8 r! [- X, u2 x$ Y]
1 h- ^+ h) @" v: K$ Flet credibility-i-j-l 0! s; o+ a+ @2 z7 @* I, {7 M% G* Q
;;i
评价(jjl的评价)
- N* z% h- F; G' h* y1 L- e# {let j 3
  O: ?; j% s  d" m1 _# I! ]# Xlet k 4( U( g6 D4 L: v% u9 i# `" t
while[j < trade-record-one-len]
/ e. p1 E7 O. ]7 P2 n: m* @[
$ X* m, u5 {! u  |7 E' uwhile [((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
% T2 {, R: q2 J! W9 Bset 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)% K7 c; r) W" i
set j
9 i" z3 e6 Q% ~& m) x  S3 U/ T6 l( j + 1)
: x. m. }, n$ d/ M
]
! F' Q& ^, ^8 J" {" v6 bset [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 ))
  B  c* W" q& d: G4 G* g3 t
! T1 ~3 {4 H  e

' J$ h; {  O) |* |# c( rlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
, H% O. h0 J6 Z1 H;;
及时更新il的评价质量的评价
: C+ y2 R) ~3 N1 s) H. s: F( eset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
, L/ w8 ?) q9 ]- }+ G# zset l (l + 1)
; |6 n" M" r" a! `: b% V( a]: P: g4 |/ o1 P0 J
end
& a% w) m. ], ~" T5 U, s2 {# j, w/ U; Q3 ?
to update-credibility-list, T" V0 F9 `  z+ P' z' @
let i 06 W3 c. j$ c; {( w( y/ b( j
while[i < people]7 h. o% n  }6 D+ w
[/ o5 ?# Z4 h! s/ l2 C7 h4 E$ `( E
let j 08 }2 C) X+ `* w- C
let note 0+ I% a8 ~, F& H; q5 A& c6 {: [2 a, X
let k 0
0 R) k" K9 |- v. Z$ };;
计作出过评价的邻居节点的数目
7 ]& ]$ a& G  R4 u. s3 J# E/ gwhile[j < people]
$ f/ R# a; O9 G5 d; ?[+ a& b8 X- V: J. ]: t! G1 q$ C- ^, @
if (item j( [credibility] of turtle (i + 1)) != -1)$ [1 a% s9 j# u+ g6 y
;;
判断是否给本turtle的评价质量做出过评价的节点' S! Q) |" x3 e- H8 ?7 A) B
[set note (note + item j ([credibility]of turtle (i + 1)))
2 a/ z" }, d; Y' u  _  F;;*(exp (-(people - 2)))/(people - 2))]

8 v4 h. S- r% [8 H. gset k (k + 1)
3 U' a! M6 D6 H  S% O% o( `]
$ O; r* z; b2 U9 k$ Cset j (j + 1)
( a+ J) R" ?+ V+ p) J]- `9 d; q1 c& U2 p$ U  _
set note (note *(exp (- (1 / k)))/ k)
/ v6 }3 h. O6 `8 ]+ Zset credibility-list (replace-item i credibility-list note)9 i% `, I) F% [
set i (i + 1)* I# [& o) u$ J3 ^8 I
]
- o& u$ k# O! m9 z: Y$ ?, jend
* f# s1 Q# h+ r7 T; S4 f/ r% X; G% U
to update-global-reputation-list9 z. i. L* C3 ]* y
let j 0
0 d1 f/ s' y; C$ ?0 ^7 Swhile[j < people]
4 B, i' M+ T3 ?6 o. N0 ~- G[+ Z# z5 W7 M! B$ g! c
let new 0
4 W( \! u! k' [; K( E  r;;
暂存新的一个全局声誉
" V0 B* X- A! Wlet i 09 |: X2 J/ y, H9 W
let sum-money 0# I. o- f! q  L# l& p( f
let credibility-money 0# J; i6 Z3 {& ^' c: }* u
while [i < people]" z( W' M; |& U1 U- A7 J/ |7 g% y
[
3 q. M9 L! I0 M- Q3 Fset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
& H$ z: [, z' R; `4 Nset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
" U" {1 z* }- dset i (i + 1)
6 F+ q) |) n& N]
, r3 k' o7 i& O4 e( flet k 0
+ e3 \% [# E# Z, Y1 h4 jlet new1 01 w, }1 _5 s# z# m% @3 _
while [k < people]: s3 ]1 L" _) u
[
, x! G* L! H/ y1 P, ?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)4 W: y5 z, A, o, Q' K
set k (k + 1)
& v: ^, l3 H  ?; O7 `8 S: R]# `; \* _# P$ u9 W
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
2 B, N' B1 D9 }, Jset global-reputation-list (replace-item j global-reputation-list new): S1 n' ~- X. x% F" n2 Y2 m
set j (j + 1)  Y; N! A' c" t6 y2 M
]
% l  w2 t) P' |8 L% Q& s8 b/ C5 }end' b# C' ~6 o5 t8 A' S$ v3 a
/ m$ O- E* R3 |& P8 M5 N
  p  ~, b) ]: `

7 K: C% i1 S) D  P" S6 w( V9 dto get-color
9 f" H# A1 l! ~8 p" |' T5 }* b5 }; e6 m
set color blue

* Y0 x+ z$ p4 B) pend3 r* z' a  ^$ V8 }
& q* [4 s1 n1 k
to poll-class
9 l9 y# r1 }/ J, i( h8 E7 Y, B8 hend
- e' W2 ~: U' ^! I3 K0 e! l/ n- Q; v
to setup-plot12 ]% H- H; C8 p& v) \3 D
' q  @  _& M3 {9 l3 V5 V" k6 X' u
set-current-plot "Trends-of-Local-reputation"

2 W2 \1 c$ V7 k0 W: E! s  l, m
( ~, k7 D- K  G: L# t" Y6 Aset-plot-x-range 0 xmax

8 U" h2 H2 C3 c% S. U
( |8 L; v% q( ^- sset-plot-y-range 0.0 ymax

# J; }; d( n5 a4 n+ I6 rend4 {# P5 Q0 n! w. d& `
- s4 k8 i# [* {$ F
to setup-plot2
# ?; A! [7 Q. N5 M* b) y
. T* K! t0 H* ^2 P7 P! `! p) |set-current-plot "Trends-of-global-reputation"
* a  c! S: V, h

  R0 j. L% B, h1 ?( jset-plot-x-range 0 xmax
, L9 ~' e' Y) y% x. N& \
6 J* @0 r3 G6 k- Q
set-plot-y-range 0.0 ymax
. [: X& H- o* U* \
end
  p3 y1 [2 ?! {# x7 k; ^* t2 k$ {# x/ i
to setup-plot3
# i" F5 w: L: s# w% ~7 B' T4 z4 a. ?* S9 b
set-current-plot "Trends-of-credibility"

  d: o* y( W$ K$ d* h% g/ {5 O0 M) T1 x4 e5 t4 O- ?. Q
set-plot-x-range 0 xmax

. {1 o  z6 S% ^+ o' U0 a$ G
+ {: A# {) N: j1 Q: nset-plot-y-range 0.0 ymax
) o; F5 X1 B. @# T( U0 K
end3 ^* j- ?$ }" [- G

4 R8 F% A2 y* {" Uto do-plots6 ?- c8 z* `; ~( |
set-current-plot "Trends-of-Local-reputation"
, ~& X) x, b( M2 W% U# m5 [: ]% q2 gset-current-plot-pen "Honest service"
& ?+ |1 M4 H- I: i$ Gend
9 v+ b2 u% c1 N9 e" b
+ M* n' P/ D$ D9 E* [# k. u7 O+ 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.# c' H4 Z3 N/ Q/ q; A1 y

! v0 \8 z  p, J$ }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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