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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:, @  t* k6 j2 E( L2 U1 d) _
to do-business % i2 q# j7 Y+ I: X
rt random 360/ Q2 j5 H% Z2 o3 ^+ N  H9 Z) X
fd 1& e2 E7 f- d6 N
ifelse(other turtles-here != nobody)[
  e& |4 I3 S: `9 a, z, T- l   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.- f, x7 Y5 I+ [4 J0 H+ a" }% [
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
( J2 I! q- z7 T& g   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
' N: [& @! h5 y5 ^1 X% P9 g   set [trade-record-one-len] of self length [trade-record-one] of self
  q5 s# b& Q% Y" a: ]* n   set trade-record-current( list (timer) (random money-upper-limit))* l4 E& N( Q1 v
4 b# w. I2 z$ W2 s
问题的提示如下:1 |+ C3 e' a0 E% t  D+ _1 n
: l, y( _9 V. `
error while turtle 50 running OF in procedure DO-BUSINESS4 v; a) z7 H  D  N: g- j1 K
  called by procedure GO9 h: E( a, v& B7 j
OF expected input to be a turtle agentset or turtle but got NOBODY instead.8 Y* u+ P  S0 n1 d
(halted running of go)
: T" b3 Q) u8 H" a) |" G, h
# |1 o3 U3 e, s. A# e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~~$ z5 R  ?+ V* Q% B* H
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* T) j- B0 q7 T/ n- K, y8 |" B# n' B1 p/ e
globals[. q" y; E% `" |$ F
xmax
6 G* e+ s7 [& `' H* W+ Kymax2 i- [5 H  [% H- b) u
global-reputation-list  x4 U4 |- f2 ]/ g7 y$ z8 N0 R, Q

! q# U9 ?( k' o;;
每一个turtle的全局声誉都存在此LIST
2 y. Y6 y* h' q% p" E3 \credibility-list
2 S6 S2 m# X6 m; {5 k7 H0 @! A' Q;;
每一个turtle的评价可信度
( c! s: D1 k7 @2 Uhonest-service  l2 e  n: G$ c, u& s2 Y
unhonest-service
4 _! u% D1 j) l$ Q) Ioscillation
' Z- i8 h( \9 X" W/ [rand-dynamic
! A8 B; Z- B! X5 l: A, @# E]. w- [3 F3 Q: y, U- e. S

+ \+ g. V6 F0 \% ]  Nturtles-own[
! _3 U3 B1 f$ R; K) n! ltrade-record-all+ e& @, z5 q" @( `) j. Q
;;a list of lists,
trade-record-one组成! }0 S+ S$ P  n- K7 M7 \: ]
trade-record-one$ `- G- z% l, {: w. 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4 c4 p3 O8 F' X6 o

; N! y6 B2 m: u' R2 d: c. m;;[
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+ i  t/ k; T7 `) @% w3 D# ^
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]: r9 j" J/ E8 l0 Q) {4 l
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# n( x  u/ j+ h; G/ n
neighbor-total6 j: @3 z2 I% ^+ r: U
;;
记录该turtle的邻居节点的数目# k% {8 q+ N( j
trade-time* u1 o5 Q- }7 B) F# n+ Q; D
;;
当前发生交易的turtle的交易时间- n* X8 M4 O- H$ D% a
appraise-give1 i" n7 l0 Z2 f. G2 c0 a/ j/ l: d
;;
当前发生交易时给出的评价
1 B3 i5 }- Z9 Z3 Jappraise-receive0 G' Y& U, \3 |: q8 W: c
;;
当前发生交易时收到的评价5 c) P6 Q- z$ S* x4 k' w
appraise-time7 R, N: K: S9 J7 k9 V
;;
当前发生交易时的评价时间
. x7 L: r& a: O6 slocal-reputation-now;;此次交易后相对于对方turtle的局部声誉; h% O5 B# Z- A( u( }0 U
trade-times-total/ I7 Z4 y8 `( g8 a: y
;;
与当前turtle的交易总次数$ \1 }: X( D( O
trade-money-total
$ P+ r0 N# G2 b% ];;
与当前turtle的交易总金额  Q, y+ `" W  O
local-reputation
$ L9 N. o+ a! {3 I9 ^3 _global-reputation* P* ^$ D3 w, I9 f" b
credibility8 n1 G1 ~1 _3 `) L# A1 x! x" `9 z
;;
评价可信度,每次交易后都需要更新
  o7 ~( m, b" ~. B) Jcredibility-all5 L) f- o8 W$ y/ k, E6 [8 {
;;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 X& x: I* P! J- O7 y

& p6 ?) |& K! I7 N;;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  w1 ]9 F: H  @+ V  q
credibility-one
- B% e0 Y" J* O* ^$ W& c;;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* N% @) _! ~* Q, J  X
global-proportion
# v* x% }" ^  L0 D+ V: I4 Kcustomer) {7 A# C$ v9 ?8 e
customer-no& W# B0 g+ w" ]6 W
trust-ok
' J5 i7 p2 O) I; F2 X( Utrade-record-one-len;;trade-record-one的长度8 d# k/ y6 B) c
]
  I- }7 @" j8 t3 O. e
9 l( S+ w) q0 g+ p% x% _5 F8 y;;setup procedure
9 a; i5 n+ h. A
; o& [) [# H1 J: m- vto setup8 s7 w' Y- s% c5 n) _5 N
2 I3 K- s3 Q9 b/ j, k
ca
$ j  `, [( f- C; V# D* e% J% m

7 y+ q2 B& ^2 yinitialize-settings
. Z5 |0 y  \* X5 [5 `
* A8 k- v# G9 _6 N) x3 W$ ]
crt people [setup-turtles]

. ?) H2 \  A! f: W+ k: T6 m0 s5 U, F8 M! X
reset-timer

: U8 B! u3 z* w
. a) w! o( N+ ~$ Wpoll-class

$ S# y. w- O5 J2 |' g/ I
" w* |7 x; u0 ?6 ]) L+ Gsetup-plots
1 Z* R% N1 Q6 l5 G
. @& H% s) d- E2 m
do-plots

/ [5 M( x& b! lend
+ ?& M; D2 G; L. ~& B( F0 U; s; z/ i  s  Z: q4 B
to initialize-settings
& L& [! y7 d# x) t" u2 O3 M/ F
8 w" [& w4 x; k3 ^3 ?+ w! b% `set global-reputation-list []

( h6 p6 A  ?5 N( T$ w2 r, V, F# W. C; D& C
set credibility-list n-values people [0.5]

8 f; f- E: Z( I
0 ]/ \& n4 Y/ z" \: kset honest-service 0
: Y( f! t) k1 {, s% @" \+ Z

! o) _' `/ M  r3 @3 Z! a5 wset unhonest-service 0

- X: |* U) y4 i, }9 ~/ T
: P; a! q* ~9 e+ h5 vset oscillation 0

8 |. g  o: I$ r- m% s5 G( u: |( w3 u. C6 U
set rand-dynamic 0

* p0 i+ V) Y1 h7 Lend% _7 c' K2 k9 k& @$ x: R& y8 }0 y- [

5 w9 L& E, I, ?* t9 `. |9 U8 tto setup-turtles 2 U$ V6 z# _+ V# U0 ?
set shape "person"
5 N% X# c' i. V2 @# R/ V2 Tsetxy random-xcor random-ycor$ i+ ?; d1 F- P/ w
set trade-record-one []# p9 Q0 L, X3 q% l4 d
& S( T7 r# i9 }+ ~/ i/ v8 [
set trade-record-all n-values people [(list (? + 1) 0 0)] ' ~: A" H. T. {
! U8 A1 a7 G2 Q/ T$ O( n+ t2 ^* m
set trade-record-current []( y: p' _) x7 c% C6 W
set credibility-receive []0 y! f! E2 `9 a2 f! ?8 c$ g5 m& S
set local-reputation 0.5
! H7 {2 P* Q' W7 vset neighbor-total 05 L1 \4 L  {9 ]2 _4 W, F
set trade-times-total 0
6 Q+ y3 k/ u. `' H7 zset trade-money-total 0
( R: D: {/ Y) z8 y7 d* @+ e% Fset customer nobody
% h* H# ]- t1 N6 F) X7 |  u$ L, nset credibility-all n-values people [creat-credibility]
. v# x: G# I7 C2 Pset credibility n-values people [-1]
8 ?/ y0 K9 l6 ]) g6 F! Lget-color  t9 A) _% c3 F- d/ G
& q0 j* B+ S# T: \* n' P( H. V
end
# @  d1 _3 t! K% Z; R' Z6 [4 [: ]9 g( g# }( ]" G9 q/ J
to-report creat-credibility
& x+ r- Q  V1 n( Z# lreport n-values people [0.5]
8 e/ u8 Y& ?4 R* b) ?end, r0 m" f; Y0 J& j

5 d4 P" e6 ?+ \" N4 X4 k0 [$ pto setup-plots
+ r) g8 i  F7 q' q* c7 N
3 a. U2 Y! u/ t2 v; s; k; @. N: mset xmax 30

! P) u9 r) q  R2 i, W
8 O  r+ r9 |# C7 p. O: u3 vset ymax 1.0
. G: a. ^8 O* _& C9 C

) h" E8 p% n/ B$ |2 gclear-all-plots
' N2 f' u6 y. l1 L9 y7 N
$ m) ^0 {8 u7 m4 n6 P+ u' s
setup-plot1
2 R9 t* b+ M% N! a$ f9 b- w
! m, P2 [( V" d, o4 t1 a
setup-plot2
' h: s( l/ z; a$ v) S8 |! o
. c5 N( |- F6 Y7 k5 }  i. b
setup-plot3
% r! `0 T6 `$ |( i( I4 I- d# f
end
# y' ~% O. U; ^2 g% ~  F5 n* `. y) L6 t/ C2 v
;;run time procedures
8 a/ W; H8 @. W. S% k+ U4 H; N5 @9 P  z# I, y' c
to go  f: d: Y9 k& R5 A. Z

+ r( w, v0 l1 l& C6 kask turtles [do-business]
9 E3 o. J3 _, i9 Z- h& f' J, B
end
8 e$ ?# d0 n; ^- j) ]  ~
2 w4 B# S3 ?1 ?- N$ |to do-business : {# V& `; Q5 p( ?6 {) s" X
1 r* e' H; L! Y/ A; g1 G2 N% C
7 \- f2 p( N  t( z6 `3 C! b
rt random 360

! t8 `% _- \7 K8 q/ C7 M1 L; S  d1 P/ w5 I
fd 1

9 `! q4 z9 Z+ F, K  O" M. c
0 L) }  @; W1 }8 r% O3 t3 D3 Iifelse(other turtles-here != nobody)[

  X# m) w, u) n4 ^3 O
7 @3 ?) ~. ^8 Q' Uset customer one-of other turtles-here
- i$ f. n4 r, u6 ]+ j0 s) L
0 K7 `, J) \' p6 ?% j8 ~
;; set [customer] of customer myself
/ ~- c. ]% I% [3 [

! E' k* L- K/ Lset [trade-record-one] of self item (([who] of customer) - 1)( A2 m9 N$ H" a& g
[trade-record-all]of self) b; ~0 y" l( ^, X8 \
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
0 X+ E, K( @/ y* l0 \4 e" n

' a3 `( d0 v5 C# v% Qset [trade-record-one] of customer item (([who] of self) - 1)) A6 c# `! N: ^1 Z) s( a& h* f! o
[trade-record-all]of customer
; X5 h/ M1 J2 _4 E' j+ s; x

8 d/ z7 Z2 |' ?% _. p* aset [trade-record-one-len] of self length [trade-record-one] of self

3 Q' h, l& d* E& N, ]! t; ~( T8 }0 v% p8 x7 P  l/ `& t
set trade-record-current( list (timer) (random money-upper-limit))

# M% V6 }; z: Q# F5 Z8 D4 k* F0 F& Y- h- d" U( c( h
ask self [do-trust]) z: L. B! G/ ?6 Z& `. I# {/ w
;;
先求ij的信任度
) r7 W- J7 B1 T# {$ f
7 t# K0 W8 s4 fif ([trust-ok] of self)9 \& A( L! S* a- K
;;
根据ij的信任度来决定是否与j进行交易[9 p. d6 o& }- F3 q' t
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself$ i/ F; \* W/ M

  y) F0 I: ~% T. Y4 u+ k+ y9 }[

1 i( ~0 F# ]0 R, K  R: L# O0 [
  Z1 [8 M7 d" R) vdo-trade
. ~" g" ^2 v+ D$ |) i( ~- i

% {+ N/ C1 R3 [: Pupdate-credibility-ijl

) v* Q  p2 k5 R) o* }8 ^: Z5 a' {. D8 J/ _) G
update-credibility-list
# g* l' u0 v. T& J1 X
* Z; L4 _: R2 x+ ?# V
6 ]3 k. ^& T% t* }5 \" y( v' F
update-global-reputation-list
% u) w0 d6 [* G5 n' |7 ^
1 R' v3 z& P# w7 k7 }
poll-class

$ C; @3 G, R0 c4 i, |' {6 Q
3 f# F3 `$ l4 E, F( U8 \: @get-color
. ~" O0 A  E  W7 @' h5 M
6 p. d. ?  b! e4 ~( d" _
]]
/ s* B# u+ A5 [
1 I( B. y0 e3 _8 R. G1 I;;
如果所得的信任度满足条件,则进行交易5 e) I  g* ~$ T2 v! s
9 N9 ]- [, x9 g) D$ p3 \/ s; r6 q8 u
[
' J' C& W- b! O+ Z7 l

3 e7 d, c/ G# s3 }; d  Q" x6 @$ urt random 360
. O, C; l! d1 r; y* }+ O+ l/ }& T- Z
4 p, l! C" Z, x
fd 1
2 g- W: s/ v6 L5 _+ t1 ^- b
7 H6 `  @4 W: U8 |' U
]
8 ?; t* q+ U; C. ]7 ~8 s& N
2 P" B/ l+ C8 S& d4 n( h
end
: W' p( p) z5 }+ ~

$ t1 o5 F: _, i' ?6 qto do-trust
" e1 k( Y* P& y  tset trust-ok False
  J& i  e4 J8 G
, F: Q: V5 _! Q/ I

0 u% d( ^( A4 Q9 k- Wlet max-trade-times 0
) `$ Z8 ^* G3 W/ r7 pforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
: K( K) j5 y( ~5 N- Hlet max-trade-money 0
& t3 ~3 F+ {6 r0 [foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]4 e/ @! d1 z1 {0 Y" Y+ |" K! f
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)): l! p" H. V8 H3 W; i. E
" `( T5 A' S, w1 j0 w1 Q

3 j6 f4 w, Y' r1 pget-global-proportion
: r* w; x+ \" G2 x5 Nlet trust-value% F  B3 T1 O  e6 A
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)
5 i' h3 h! E% u/ g9 Z# s( D
if(trust-value > trade-trust-value)
! K1 @5 j) `  B: E[set trust-ok true]) K* D) \  {5 a/ y( F2 ^* u  A% E
end$ O: p# a% I# S, r% n

" N) S1 C! D& `6 i% Mto get-global-proportion
; D; _/ E6 a2 Gifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
/ j* d( \" y. f/ G, \[set global-proportion 0]3 f6 @6 k& F* m
[let i 0/ U' O, ?+ x& l
let sum-money 01 ]; r6 h( j, L1 ?7 K7 O
while[ i < people]
) H+ u3 W+ d% r2 E% |& W[9 ^0 d& ]4 m& `1 P
if( length (item i8 h3 y' [1 w8 |9 }  E
[trade-record-all] of customer) > 3 )

, i2 l8 v0 \% ]& D7 s3 \" w[
0 U) N3 r3 @' y/ aset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
! A: h( Q* W1 v$ D( M]$ |1 ~# R6 i8 [# o. q4 E$ @5 @% n- G
]
( B  R' W+ b  Ulet j 0$ y  \  u4 {/ B. n
let note 0* U; F9 m; Q! L. ^
while[ j < people]
/ Y+ h# M- P1 {3 z+ `! y. o: ~[
0 ^+ y" q! |( s  c' N2 dif( length (item i% o  V0 f& W+ j. O9 ]% k% c
[trade-record-all] of customer) > 3 )

, j- o2 ^2 A$ _/ ^. I[
- {5 [& z: P1 r: _ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
5 e+ A" f, i# K7 t2 Z( |/ T* }[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
0 W) k; Q( V) ?9 D4 Q$ @[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]! W6 `& V/ f; J4 \, p2 N
]
1 v8 h' {% i; X]  j3 g$ g1 ~0 P
set global-proportion note
+ c0 ]) ~8 L( b% P. B$ K9 e5 @]
, c4 j  `& w4 E4 ~% Y( Pend
* _  J0 `! {" o9 J" `" Z! t7 w7 O
1 ]" |1 W6 Z9 qto do-trade
9 L  I4 i' M. v1 r! E;;
这个过程实际上是给双方作出评价的过程7 Z7 I" L# D- H7 h
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
- B- m4 b/ |' e- O& d$ {set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价% H  o, X( \" z
set trade-record-current lput(timer) trade-record-current; @* K* i, c/ e$ a+ B
;;
评价时间2 b) E  R  f3 j+ a8 N6 O/ i( d
ask myself [$ {2 _# K5 v* q9 j, p: r
update-local-reputation
  U& C* l  k. G" [set trade-record-current lput([local-reputation] of myself) trade-record-current: M1 ~' B9 Y5 }& e* D6 x
]; ~% E, b) a! k* t' d9 o
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself6 Y5 |8 _, p9 {- n- h  x' K& ?
;;
将此次交易的记录加入到trade-record-one
% E0 }- @! |2 i0 Rset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)- ]+ P0 t! p8 c1 t. g9 O
let note (item 2 trade-record-current )* t) O" b6 ?: v  Y+ U
set trade-record-current
+ a/ y  R' D" T5 G! [(replace-item 2 trade-record-current (item 3 trade-record-current))

6 Q. p2 J$ U! E1 o3 t6 rset trade-record-current
- H$ d1 h" B# \(replace-item 3 trade-record-current note)$ i' b0 ~, d$ Y
# O" ^6 t- F% J. e" j; n
& p, E  S4 P% y/ c
ask customer [: @  k7 ?: ?6 f' p. n
update-local-reputation4 T! c  c7 c$ d& o
set trade-record-current
. m. B2 |' t+ D4 l# a' D2 E(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

# [6 \, w6 m. G/ j]
9 M* n. a6 H' t3 y" @: s
  Q3 R/ K: v$ c, C$ S7 s1 j
# o0 h2 r  g: C( y. ?2 a
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer# E+ s+ J1 z9 p4 S
# S4 Y$ s  L$ D1 N: j
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)); Y, k/ r4 ]  t$ \( c/ M# R# M0 w
;;
将此次交易的记录加入到customertrade-record-all
5 E' c7 k- w6 }2 g  Nend
2 O1 Q, {5 Z0 k4 r5 c4 T5 j, a3 ~# Z0 A- z8 j; o  N
to update-local-reputation, r2 F+ V9 Q* o- n" Y, Y
set [trade-record-one-len] of myself length [trade-record-one] of myself
  U2 H& B6 X) A/ |2 i+ x) W
/ h/ l+ R2 h& ~( v+ [
+ d- }  Q0 `9 ~5 \  g! m;;if [trade-record-one-len] of myself > 3
3 G8 d- {8 n  R, E3 k% T, a; C, K
update-neighbor-total
) t# a6 E8 m$ ^1 z+ [/ U7 b;;
更新邻居节点的数目,在此进行% W8 B/ q4 L' }
let i 3
' \' Q3 L6 C, r5 Ulet sum-time 0
$ h% o2 }1 Z* L1 Z1 swhile[i < [trade-record-one-len] of myself]8 q4 E) i1 \: S6 e, p0 f5 |
[
+ N4 q$ m( l6 zset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
: v1 `: n, I3 {set i4 Q+ P! X4 h* F. b
( i + 1)

; f/ K$ T) v7 @& L; V]
4 e$ `, d8 q3 Q- C1 C8 ~let j 3# T8 {! g( w) t  _
let sum-money 0, S. E- W# j% c) d
while[j < [trade-record-one-len] of myself]
- N: a# K% _8 q  Y[
# w! `+ T+ E- n$ x$ _& W8 P- _2 m$ y' Zset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)% N  y0 B' d- b& X$ x! [* m
set j
* Z8 N+ J7 z6 [/ K, w2 s& l$ F/ I& ]( j + 1)
- O. B( P# F2 l2 K" e* U- c6 \7 U, _
]
( ?! f0 Q" _0 V0 k2 T# @3 Slet k 3
1 {1 g: k8 G% x1 E; L  Nlet power 0) Y$ l" l5 A1 \1 z  y) D" ?
let local 0
9 {0 q: j+ ]1 h5 {% S$ L" jwhile [k <[trade-record-one-len] of myself]+ I. }$ G) u! T- R, {. ?" Z
[
0 k% I) H4 c1 kset 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 z2 I( O  @  A; {5 h& Bset k (k + 1)% N3 w) J# o0 E! M5 U+ P
]- d( R' ~6 Q7 ~/ ^; w0 w( u  Q
set [local-reputation] of myself (local)
3 |( r- {, i% q  \3 K* W: jend. y( H- l3 [( B3 ]) F. |$ |' ]8 t
& S# o2 Y$ N) ]: \0 d# n) ]
to update-neighbor-total( R; \9 c4 J' _; ?6 Y

  x8 Y/ E% P0 g% uif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]& M1 |* c! R  ~/ {- }2 n9 a- b
2 w9 r  j. Q" ?/ r& H7 E$ w, N

6 r& H0 }* _. eend
5 c7 r1 A# C6 A4 e
1 L0 v$ G8 J! D* b; zto update-credibility-ijl / ]2 f  \3 Y! |
8 |2 M( o0 h3 Z, e9 I! F. m& X
;;
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。
  g& d8 V' Z) ilet l 0
9 x- r" z# L1 f( @0 owhile[ l < people ]
3 I: n- }5 Y5 B0 W" }$ s( E0 e;;
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
  s, y) L$ P  x7 m& s3 j  }[
' ~# q: |) @$ ?2 a, Ylet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
8 I, r) }2 L7 {( t8 G4 a8 Oif (trade-record-one-j-l-len > 3)
* p3 T/ K4 U# [$ Z; 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-one
+ J. y, z! Z* zlet i 35 b/ x; j" S0 h
let sum-time 0
8 x9 j2 _8 i% R* z" J) Q1 Hwhile[i < trade-record-one-len]6 c! p" O) z: H
[: I/ N. ~0 \9 p  X  H. m7 u. j
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )  e$ g; D0 M  \& c% Q
set i
9 _9 |6 ?% U- X0 E3 d% \1 s) E2 w( i + 1)
9 y4 j0 k9 I7 _' |; V7 P8 K
]$ L' O- O# b8 g
let credibility-i-j-l 0  R0 h3 B( T7 d2 ~7 i; Z
;;i
评价(jjl的评价)  I6 E6 ^' C, k+ u& B3 l
let j 3
5 q& O2 O* n8 e2 M4 Clet k 4" n" _0 h& Q. p- |
while[j < trade-record-one-len]
1 G5 p/ a, f. s* q  X* N: w: j0 |[5 H0 `2 {+ v" B
while [((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; ?5 }! o% f8 n4 ~$ L& S- s& w
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)- [# i+ G5 |- J: K4 V1 s6 Y
set j
' d2 l6 l7 u& G" _( j + 1)

- j4 s6 c3 [3 E7 v]
  M$ W5 j% M4 mset [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 ))' v) K, K* {0 o9 Z: Z  d

4 s- J  F3 g3 i7 V8 \
0 P2 `* b/ Q9 s! e1 C. R
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
$ ^9 w% s# |" |4 t/ g3 N. F* J6 y;;
及时更新il的评价质量的评价
0 C$ K1 d1 ?7 E' r: eset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
$ A0 Y* I2 t) i& s* v) Gset l (l + 1)
  b! e1 b# j8 V8 ~: u5 C  ^]
; e5 \" a) j1 {0 ?end
6 E& v* K% B- V9 l
0 I" p' E; C6 M# H& Kto update-credibility-list
2 ?/ V' Q: K2 d7 wlet i 0
( P8 l4 p' j/ O0 q+ |- {" Y4 M" Owhile[i < people]& O; f2 P. G+ i  r2 q8 i* \" Y
[) M4 w& y1 v  E0 s# W
let j 0
# C4 c$ F5 E+ s. ]let note 0
+ J, C1 T) V) T& C3 _let k 06 N" u1 t: N5 L# O3 w, y& D% m6 T
;;
计作出过评价的邻居节点的数目
+ ^3 K8 t; _8 L& u& V, H: @9 ~  q% Rwhile[j < people]
; \7 U+ q9 r- m# Y& y9 V[
$ ~! g7 j, J( r6 a  [if (item j( [credibility] of turtle (i + 1)) != -1)% E) n+ n; j6 N" q, R) D% \0 b) P
;;
判断是否给本turtle的评价质量做出过评价的节点! }& p6 S: F5 o& e
[set note (note + item j ([credibility]of turtle (i + 1)))9 V# F) _  s. @- `: ~
;;*(exp (-(people - 2)))/(people - 2))]

1 U0 r8 H7 t! M( A# vset k (k + 1)# o  k4 m8 \: r$ w
]
8 D9 [$ Z# f8 u7 Eset j (j + 1)8 O/ K2 k% @1 M9 W+ X
]
3 g0 M* k! F8 J% J, Gset note (note *(exp (- (1 / k)))/ k)4 Z& s! Z0 W3 K7 a
set credibility-list (replace-item i credibility-list note)) M* G4 ?. o7 P& Y9 C
set i (i + 1)4 Q# b9 X4 i9 t! D
]
0 Z5 X' `7 H6 N. U7 L/ Q# |3 t( rend  X  y* b3 _" T
! Y: o' o; F/ X$ S" \) ~8 M0 c
to update-global-reputation-list
0 p. W; i/ C/ _9 L1 dlet j 0
5 w' y. n$ A  W/ l; |% Q2 e) T) Pwhile[j < people]/ L" ^& M5 E$ [. u! x& v
[
0 d  R, T# [" {, E( d* Klet new 02 s- |/ `  K; z& @- h  B$ M! M  p; f
;;
暂存新的一个全局声誉- B' B( i* u  h9 f2 O4 L, f
let i 0! d* i7 B$ D$ @4 b% j0 W$ N) }, `
let sum-money 0
, Z  {: R* v, @+ Y) a, _4 elet credibility-money 0
$ b1 C5 K* |1 ]1 P/ ~6 Z, r' J# K6 Qwhile [i < people]+ n/ P' g) l. t: `: h
[
9 E' `+ h5 v. \- ]: Nset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
' E/ {' W3 P$ V3 }: S0 kset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
' G' y, J$ U. _, N$ L$ L8 Rset i (i + 1)9 B6 L1 W; y) y% O1 _2 N: ^3 O" e
]
. S5 }. b7 x, `! J  w" q4 N* klet k 01 B: e. g8 _" A! @  z
let new1 04 u- l! l. @* w; T4 y
while [k < people]
. x# O% W4 }" C  B- m; E8 f[5 Q$ w2 Q6 J" k' x  N
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)
  M, v$ a9 x- t6 G; h5 [set k (k + 1)
$ p! w8 b4 W. a9 a+ W]1 M5 C6 G/ Q/ h2 E
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) . A- d9 f* V! E; N7 j0 r
set global-reputation-list (replace-item j global-reputation-list new). u: D$ A; L" X% H) u* h# Q  w
set j (j + 1)1 Y1 S, {$ Z  i2 b9 h8 Q" u& l! h
]
$ P" h8 t* H7 A4 [' }0 A! Dend
# G. n3 l9 ^4 k  I5 {* ]  C: g
4 t, O9 w1 e; P" {
& m# {% s" d4 M! R) S+ `' X+ U
: h9 c. P  a0 [+ k2 w' q$ Oto get-color1 O2 |$ G9 C8 z4 a$ l: j
' J+ ^# b1 A+ z" y0 ]
set color blue
* p# G! s% }8 v3 j
end
6 o5 j  R. W  i" x9 F8 k: ^
" c! i) }0 `% c# hto poll-class
: F& p1 K7 [7 m2 p  dend
9 J, c% e2 U$ e  a$ c6 V5 @; L8 k: u) B( z& j
to setup-plot1
7 @* q: \/ W) E2 |, k8 k- I$ N
, t5 ]3 @- }' ^- Fset-current-plot "Trends-of-Local-reputation"
% ^9 [' P$ d. b  h) m* y

& _5 P) Y3 K% ^2 B8 Vset-plot-x-range 0 xmax

' P* T! i) r3 h& W: S
+ w' _) o" q9 j! Fset-plot-y-range 0.0 ymax

; Q# e" b7 u  W$ {7 G1 Wend
* Q" c4 ?2 V, Z8 }( y9 s) q% T$ V
' |1 i' Y& `  N$ B: h7 Rto setup-plot2
  ~# S! L* p4 L( s# U: r3 }4 k( `# q; h5 V0 C& P
set-current-plot "Trends-of-global-reputation"
: c/ _, ?9 o) Z" h4 i! K

) x* d' Y& \# xset-plot-x-range 0 xmax

0 @: k! {4 _3 v: p. R/ T- |% n; v& U1 S% p- z5 _" Y
set-plot-y-range 0.0 ymax

" ?4 o* L1 f* oend
" \. E+ A- O. m8 X6 Q4 B, \+ X& C' g' j' A6 o* T5 q! d$ C
to setup-plot3& ^% g$ H% I; p- {: f

" a- N9 T6 {; w. b( }$ x+ }2 jset-current-plot "Trends-of-credibility"
+ |+ v5 K$ F8 `+ e3 C# ~7 @

6 C, @9 G1 ~) Hset-plot-x-range 0 xmax

/ e. J) q" l1 p4 f( f0 X/ B* u6 F
' w. S- _  d( Nset-plot-y-range 0.0 ymax

3 U( l3 T6 B1 s) d. ^' W3 wend
8 W9 j( U2 x. q9 Z4 e
! v# |" q9 p, [+ K, z9 ^to do-plots1 V  s5 @1 U- [; w! H" J
set-current-plot "Trends-of-Local-reputation"7 n1 o4 Q- ^- a9 e* U- b- R; v
set-current-plot-pen "Honest service"8 r4 x$ x' L( y$ c0 e
end
& r& ?7 `3 c- o5 v$ q
( P5 A3 M* O! ]& X( x[ 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.
* b( A- k9 l4 [! h
' r' L& [3 c- P5 x6 Z" D5 H# ?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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