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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:
+ D, {0 D' {) s# oto do-business
0 w/ E' ~5 l( a5 | rt random 360
" j2 }6 ~- z& T2 K( @  g9 q5 M fd 1) s: p3 V+ N4 @9 F
ifelse(other turtles-here != nobody)[
9 c( `' o8 ]6 N4 B$ \/ L4 l1 z   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.( \# m1 m& P; K  m7 ]
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self      E  b) ?+ N$ v# N
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
7 a4 s1 I  K, N- Y7 V   set [trade-record-one-len] of self length [trade-record-one] of self6 d0 m. j. R/ e2 X( p& L, K% F6 }
   set trade-record-current( list (timer) (random money-upper-limit))
+ S# a0 N& y& S& k: C$ h
. q- l6 C+ K+ R# H8 x问题的提示如下:
- T4 k# A! f& V( M0 s$ W
5 l  w, P7 c% h) U$ R# L$ t3 L6 merror while turtle 50 running OF in procedure DO-BUSINESS+ d, D( n3 R! P" {0 Z$ v
  called by procedure GO
3 t- C" T/ K0 DOF expected input to be a turtle agentset or turtle but got NOBODY instead.$ ?" F1 w- v  O( R8 L: u
(halted running of go)
8 |6 T0 ?# {# X9 Z- g; w3 y+ R. A4 r3 r
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~~
" g1 k$ l6 I% D* B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$ O0 [9 g7 r3 p# L4 z, y4 Z$ ]
globals[
9 f6 t. a2 W1 z8 y, ]% g+ txmax
- J- g$ N% x" W# J- a! o% {1 u3 lymax
4 n4 v% b9 _0 q# O, z1 }global-reputation-list
* F/ N) Y8 I/ E; s* R* U  V  {' e' o2 \: z: d5 `
;;
每一个turtle的全局声誉都存在此LIST
' h: m  z8 A/ F5 ucredibility-list8 d% B8 ~" O3 D) p$ e
;;
每一个turtle的评价可信度
6 p6 d- ^6 R. P9 l0 ihonest-service
2 t' n- D$ p, C& n* Uunhonest-service
$ i" t$ Y  T4 F; E0 Eoscillation
& d: G0 [" G. ]& b% {& Vrand-dynamic
% o8 b/ f4 T( Y]2 W' t  {9 C9 d) Q. b& e

: J8 ]; A: D0 Wturtles-own[/ M5 X: J4 P/ M) H- i, |) ^6 U
trade-record-all, r% p7 _: Y  J5 W( u6 |' F
;;a list of lists,
trade-record-one组成
: e4 ~# z) \1 ~3 gtrade-record-one
: S! t+ B' E% a3 U;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录0 `5 B* b# \6 G: G4 T4 ?+ K
3 j7 ~2 s3 j" {; Y" |
;;[
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]]
# U7 w) X+ K5 xtrade-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]
# R/ ~5 s6 P8 B( }8 `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
3 `9 n( g- X5 b. Uneighbor-total. W6 Y& n/ m4 o- @
;;
记录该turtle的邻居节点的数目: N" S- M! w6 N( O& a3 Z  ^
trade-time+ j; G4 _9 D5 M. @& L6 Q( ~6 U
;;
当前发生交易的turtle的交易时间) J+ L4 e' r% t: F' m! \
appraise-give
7 p8 V- _% r# j+ h;;
当前发生交易时给出的评价
- y8 v% }. _& `appraise-receive+ ]! g4 a3 [( {
;;
当前发生交易时收到的评价
. u3 M8 I4 s- d; p  m8 Tappraise-time
! R' N! Z3 I0 T;;
当前发生交易时的评价时间
, ]( g! S# @3 Z* ^8 H' d. M  ulocal-reputation-now;;此次交易后相对于对方turtle的局部声誉9 N- b- n/ R6 f# J! M1 N/ S
trade-times-total
1 K+ x# l' p# D. Y4 `;;
与当前turtle的交易总次数
* b: F. z6 h3 Q! A! ltrade-money-total" L4 [1 X$ m  j
;;
与当前turtle的交易总金额
- r* f' H! ?0 \% H8 _' w/ slocal-reputation
5 c% R! _5 ^! ~% r- _- v7 c1 @0 dglobal-reputation7 H, S5 P- N/ j& A7 A) p1 U
credibility: t  Q) {+ Z# d" L$ D- |+ y
;;
评价可信度,每次交易后都需要更新# |7 c' Z# Z! _
credibility-all) e, R8 Y" x2 l4 R# o+ z  t3 J, u! Z
;;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
+ k3 S) w( }7 i% }9 w+ z0 H
# m0 Y. ^4 [6 \% X, i3 W;;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 n/ k; V4 R. Q4 y, Q- tcredibility-one, f8 v/ M# C" B2 Z
;;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people8 E) z% O% v6 C/ a3 g
global-proportion- u/ Z, K3 G2 O
customer) l+ U! O+ b& P/ j, z) p
customer-no. [/ A) Z  T5 d, v
trust-ok
9 \3 A% G6 _0 c1 o* L( q! V6 gtrade-record-one-len;;trade-record-one的长度4 c& }- e3 J3 _
]
8 Y/ o5 t5 o' q. P, \3 ]: a# m; ?4 D3 \& T1 c
;;setup procedure
. ?# }7 S' i. f9 U2 \+ J
* j) }( P7 u" Tto setup9 `/ G  J0 X! T! r( A

8 ^( q; R5 M  B6 Nca
$ A5 N+ J2 x$ o
1 q8 _6 ~3 m8 ~- x7 |
initialize-settings
) ^( N$ E+ T! q- d3 L7 a
/ ^2 W+ ~9 a8 u' o; Q
crt people [setup-turtles]
1 |0 {8 y# }+ B( w' {( t* q' t+ @7 z

) z" ]0 l; J- x$ l6 d+ oreset-timer

. ^% D+ x. k( G4 `9 z. \( [3 K+ x, w! l6 s/ Q8 K
poll-class
) ^* N" E% Q3 _# Q+ f

4 B# n( S- L: r! ^) y& S* b9 Rsetup-plots

% ?; }" k( J& F7 P- S; o& e1 `. h) A5 E6 c
do-plots

% o8 a/ T$ k; c3 C. X+ Jend
3 {) F: l4 M- z  Q1 r' l6 y5 G# C  _  B4 `9 Y9 S6 S# q
to initialize-settings! ~  B1 s4 [" k; B* ]% n9 `
( ?5 V# g+ S  B8 M% i  y+ T
set global-reputation-list []
# q- C! C/ t; T6 ]* G5 G; U* Y
# `/ t" j8 Y- J9 h$ s8 ^. U
set credibility-list n-values people [0.5]
! u# I. x* i$ v- S. M6 f4 r
/ }+ r: ]+ ]6 ]( Y" S
set honest-service 0

/ Y! R( _% A. e( ?: d& N
. a9 P$ b! L& P( D* s! Q+ V$ Iset unhonest-service 0

  [0 L+ ^$ E) E' x/ ?, D- r; d  _4 M! E4 g# w7 X
set oscillation 0

' C' Z2 m( s1 Z: g; a9 S7 T) X  y- C, B6 g0 ], [* \* O
set rand-dynamic 0
, P  `; k5 {8 O+ Y
end$ o  |  F- W% R, f
, X8 K1 O5 |( g, J4 ^
to setup-turtles
1 ~) h8 O4 s- q: nset shape "person"3 _) q% }$ K7 c
setxy random-xcor random-ycor7 }; W1 i; j% b" W9 U7 {
set trade-record-one []) ]6 w9 o; _. o0 T
2 y7 s  m- Y5 V2 J7 t) {0 L) a
set trade-record-all n-values people [(list (? + 1) 0 0)]
4 T2 m3 ]5 _/ v

% `( {$ q2 Z9 o; t/ K' Fset trade-record-current []
1 \7 ]( d; i* b! j, Eset credibility-receive []
# v; I, q2 ~2 O1 S8 c) {set local-reputation 0.5- G) F; J/ O& {
set neighbor-total 0
& q5 G) T: o+ S3 Y: T9 bset trade-times-total 0
2 l7 V1 ]2 E4 S$ F- Jset trade-money-total 0* T) ^+ b) r) z( p  H9 Q' Z
set customer nobody. a- e3 Z' G7 W$ M% ~: h4 z
set credibility-all n-values people [creat-credibility]
7 @% k! o- e# ?* l( v& F# p0 f' _set credibility n-values people [-1]
/ v) y4 o! a+ F- h$ M! Jget-color1 Y# F. p9 N  F7 S3 ]+ }: J
; H3 l! {, r2 M+ \- {8 ^7 a& Y
end: D( V8 ~* d; r- U/ n* C; t  z5 A
  F1 k- _0 T* U+ N. U. z
to-report creat-credibility4 X6 I9 B" x4 G2 }9 V
report n-values people [0.5]
  |0 }) G: Q' {) N! Aend! o% S& B: h) T) Z" M
9 M# z! ]0 z; o% M3 y
to setup-plots$ u7 p& U4 @8 F3 F
" T6 `" L  g0 ?- n; X1 e; f; b
set xmax 30

/ C* f/ L7 c+ o: }) M7 d, ?3 T
' e) ~1 U9 _5 R0 |/ X+ aset ymax 1.0
1 K6 x  y- |3 r9 D$ Q

3 L! N0 c5 V- o# d( E) f+ Jclear-all-plots

) U: m1 i2 i, `& F; O. Y* H4 G; y% |( C2 S0 M$ O
setup-plot1
& S5 y6 f1 _+ p' s- M

& O. `7 b, Z7 I: {/ `" vsetup-plot2

  {  ]2 }$ F8 s# e! [
6 I9 G8 I  D2 v3 Z8 ~setup-plot3

# V4 U9 z6 a7 Qend3 G$ C  h) N7 O( Z8 b- W( Y* ^
/ `$ ~& K6 {; E- H- Y9 |
;;run time procedures% ]8 e) Z0 p$ y' d# u
2 K6 M6 S3 |- u& t. h+ J8 d: G
to go' s7 l8 a# r* }$ J5 ~: j/ _
% m) `) K/ K1 B
ask turtles [do-business]
1 D/ Q2 H6 b( J3 ^
end
) e5 w+ s* O, c1 c" V0 B6 `( i' ~- n0 M$ Y
to do-business
, }- S. T; t" S  F7 s
" R0 r1 ^8 x, G$ i6 L
1 X* Q/ ~) J; w. D! M2 J! c) P
rt random 360

/ p6 I" O" Y8 Z, V, M/ i  T* D; k
fd 1
- ]  f5 ]7 h+ R+ I

8 `5 M" z; A' Difelse(other turtles-here != nobody)[
$ g4 C2 V8 t# Q2 [8 s
  C% N$ E% R5 G" R7 Z! R
set customer one-of other turtles-here
9 s* C3 V, y) d1 e# V
+ n, Y; `* A2 \0 x! B6 E$ d: {
;; set [customer] of customer myself
$ t) @1 S  h, B% F; T0 X
, e' M( t2 s) W# z, T# n0 g' Z
set [trade-record-one] of self item (([who] of customer) - 1)" R. a7 {( r" l# G7 z
[trade-record-all]of self
6 r( Y, j- i" S; X! Z# p;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
" p: W5 @" A6 N4 v5 H% t/ [7 D

: \1 N; w& `6 t- Gset [trade-record-one] of customer item (([who] of self) - 1), d/ V( H/ |& s; _; @
[trade-record-all]of customer
8 \% N) Y6 h- @
6 O" q( T& x3 N; `- K& F( N
set [trade-record-one-len] of self length [trade-record-one] of self
  r& W* L: V5 Y$ c5 \+ R
! g6 l. b0 r: P. p, W- f, R
set trade-record-current( list (timer) (random money-upper-limit))
/ y1 k% P1 m; _2 T; B
3 A( x" {* I; I2 g$ ?3 |
ask self [do-trust]) `* Q' S% o* {" L% r( @
;;
先求ij的信任度! k( L3 ^3 Z# D  V8 V" @
8 v4 W3 \/ y  w1 ^
if ([trust-ok] of self)1 H  t& q0 U2 O; f* ~3 `
;;
根据ij的信任度来决定是否与j进行交易[/ q0 a! B+ N( D6 s
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
& g9 r+ Q. C. M7 \- j+ i
. V3 @; P( K$ R' t9 j3 @7 b0 [6 ?[
0 Z$ K9 d2 b; |

- F' R# @; ]  ddo-trade

1 v( P: e6 ^" L8 i2 w' G6 I+ P7 ~* p: h8 N2 R
update-credibility-ijl

5 ]+ ]. D5 O: ?+ u( h+ p! [! v8 ^7 o) U; R3 s# H+ b
update-credibility-list* M( X( r0 n* [& Z0 N& W) o' S; n9 E

4 J2 u: c) {! P4 Q1 Z- R
) v, K6 ^' o' \3 h$ I" H: [update-global-reputation-list
9 f2 [) |( g9 |5 z& g: E2 D
3 [1 y: g  p9 ?! b
poll-class
7 L+ C; }, j8 r2 p! P+ [
- `. A- F! z( }! X$ f9 w
get-color

) ?4 U  w& t" A: K, [. A5 \, q, y7 u) p4 u9 C
]]# [" A. o& L' Q- R
0 H# s: Q: f3 ~$ [& t* t& }
;;
如果所得的信任度满足条件,则进行交易
1 m0 w, N! E2 l" o# E1 ?& W+ y' k% L9 m! E" p- S0 M$ O/ k8 _# @
[

; m2 O' W) [  b
/ v( _" ?  j; U1 _5 ]: w3 Nrt random 360

0 Z! g& m, @( A' q8 }! i7 I; V5 m8 u0 H4 V  Y8 A% B8 M, M
fd 1

5 W, F8 K3 ^3 I$ M& {/ Z0 l* m" F& J, ]1 P! T
]

0 x" k9 a) q9 H) R% `8 q! \
. O. D7 C$ {5 q6 v# E2 |2 b7 tend

1 ], V. w3 Y7 Q$ G5 i; `( \& s, Q
to do-trust
1 `: J5 L0 O, ~3 F4 {) ^$ tset trust-ok False- k9 i0 m2 c* g3 S( n% n4 p
( I& @& Z' A0 c7 t# R8 S& W

* n0 r* E& N- r+ elet max-trade-times 0
1 m. r! }* x6 w: Z; p( x9 Yforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
% [/ f8 D, v' D1 glet max-trade-money 0
8 }. r; e$ T; m) O7 e8 bforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
) q. ]  x$ C8 Z! Dlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))3 s0 C2 L: k+ Q0 B" h- S+ N5 {

0 ?$ Q; s! U1 {% u* t' L. G

. `5 p4 q6 o) |: O& Q; X$ e1 [, oget-global-proportion9 C$ Q( o, V7 l  }4 g& _7 s" m3 a
let trust-value6 h  G8 e- H$ R" n
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)
# g# h% H, f8 s- F( y: @
if(trust-value > trade-trust-value)2 o, b/ c  K: u% g" I
[set trust-ok true]
. i* c- |$ O3 h! Y/ L9 g6 g( dend
* B+ D" Y; b- e# T
, |, ]! a" ?+ G3 v$ s" S5 @: _to get-global-proportion  T# l* z$ |9 u6 p
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
9 z( V: }* n2 V9 u( d0 n7 P6 A  c[set global-proportion 0]# m: a9 B) a5 P% \3 K3 m
[let i 0: W" O* d% B' k/ m! \0 g
let sum-money 0
9 I& k& e' T" Ywhile[ i < people]! G2 \: E6 H4 ]2 |7 [3 Z
[
2 p% C" ^( ^" p6 S; T2 q# Kif( length (item i/ A/ N# c! j- G, @7 A
[trade-record-all] of customer) > 3 )

2 l$ K1 Y; C4 Z, ]" ~( b9 o/ k3 t) l[
" j9 \& ?* v$ Y2 P# y6 Q9 Oset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
/ \6 t) [% E6 p) j9 ~1 `]! U9 i! r6 O( d0 @
]6 D. a7 w; S0 q( ]* H
let j 0
& Z, f& \/ Q. D! U" W+ slet note 0# ^- a* s9 c% v) Y
while[ j < people]! w6 }( ]" V1 X2 B
[+ s* X: x. a4 c& l/ ?! q7 t
if( length (item i
/ P! {7 u& \7 x  q6 P7 ?. B[trade-record-all] of customer) > 3 )

% R$ E% h. c- Q0 h4 o[7 V* i" J1 A; S! _  G% U+ m
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)( s, u4 f9 R7 B' E( ^5 e* D
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]9 D0 z' D/ Q* o0 R
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
; p! ]; v' V* V, `9 p7 F" c]
6 d. T" g8 r* A0 V. L# V) \]! a* V; t; A( }8 N# k) H! r
set global-proportion note
# w9 E$ _$ F$ X" W# ?3 V]7 a7 k) \7 o& }0 x& l' K1 W0 P1 |
end7 W* Y+ ]) F7 E* v
# g' R6 U- g% i! c" R8 v. s0 D
to do-trade
' b* R3 ^+ R0 x) z;;
这个过程实际上是给双方作出评价的过程
: o6 `0 v  t' b/ a5 n* x# V9 X) Lset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
* T( P( R9 f5 N% I. Tset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价/ O" B0 G1 J4 F+ g, y4 R- b6 r3 {
set trade-record-current lput(timer) trade-record-current7 v9 Y- O+ V- ~. s# Z
;;
评价时间
4 i; }, O% H, g) Cask myself [0 t# i& z' E4 w: D. V2 c
update-local-reputation; ^4 o" R5 U, j' U7 F# ^. z
set trade-record-current lput([local-reputation] of myself) trade-record-current
( O: b' e! o' l4 H]
7 p/ N6 a" G4 b8 K' d, Pset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
$ ^6 |5 b. N  _- i8 W* j9 e;;
将此次交易的记录加入到trade-record-one
. R3 y3 K* ]" B' }5 [: V& Sset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
: g- w0 h* @, Flet note (item 2 trade-record-current )
$ f+ r6 d( e& d9 L3 hset trade-record-current  O' z' j1 g. c7 Z6 Z/ v4 M4 E7 Q
(replace-item 2 trade-record-current (item 3 trade-record-current))
3 E& m7 B% g+ Y$ v1 B- m
set trade-record-current
' r$ e& e2 f# Y# `" i(replace-item 3 trade-record-current note)
) V0 `( c/ U$ b, o. A( s2 V8 m
$ R# G* ]0 t% V0 f

% x3 `& s- h& V# t2 Nask customer [9 _7 T, N. L& [3 Y* c
update-local-reputation
  E7 i' M1 G5 @2 \3 c5 S- bset trade-record-current; c1 [5 q, c! l7 E8 h
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
/ p) l4 ?  ], ~9 r2 i
]
8 i) h0 w# u& w
+ y: D- B' U. L* t  k+ c3 Y' A4 m

, }: r- |4 K0 s% s3 R! q5 zset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
# R3 m+ I7 ^! h& d$ n! H

& [; O5 `' v. Hset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))0 e0 Q3 s8 H9 `# r
;;
将此次交易的记录加入到customertrade-record-all8 V! V9 S  V$ u5 _. y* G! g7 S
end/ K% Z' A7 g: a1 n& T) `  c* m4 o& y
' g% E/ f* N* f6 p, ]
to update-local-reputation
4 t! T7 `# X( t# cset [trade-record-one-len] of myself length [trade-record-one] of myself
7 k0 e2 G" K, F) a
/ s1 v: x0 v/ G5 O6 N$ R" U
4 }3 w/ k7 q9 ], [. A;;if [trade-record-one-len] of myself > 3
" L$ G$ [* C" k  k
update-neighbor-total# O! v( o1 {" s
;;
更新邻居节点的数目,在此进行% K, H1 \$ f+ q+ ]
let i 3: V- L6 D/ I$ [- `
let sum-time 01 K/ H7 [+ p/ B* a4 l, Y9 T0 |
while[i < [trade-record-one-len] of myself]* A. y9 R1 K7 j/ X$ l  {
[
1 c9 M- i3 ~% j, Wset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )# Z. |1 p% h1 ^
set i# s- c+ k: Q. e% y, Q( y$ g
( i + 1)
# A, e' z2 Z& t( q. @  h
]
0 L- I3 o/ R3 ?% X; B& v5 vlet j 3; o. e/ }$ W5 a5 }
let sum-money 0
" q0 `" q+ ^. F' S2 S6 B# [while[j < [trade-record-one-len] of myself]
; L% B7 b7 A# d$ C+ |[
# V6 \2 c# x( a4 l2 ?2 t: iset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
) K4 _* K: V- B% q! xset j) s1 L6 Y. b4 s  M' w( E
( j + 1)
9 A/ y5 T- M; J+ F
]3 p5 b* ^5 }0 l
let k 34 x5 s9 w3 f4 B
let power 01 P* C4 b! o7 \) ~
let local 04 E' f6 ~: O4 s% H
while [k <[trade-record-one-len] of myself]; z$ o3 N7 i& N: A2 y
[9 W1 a" K' t% b3 H  Q8 H8 i
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)
$ V( L: L( \. p; @6 yset k (k + 1)
0 j7 q; a" O( D  ^7 O  B, Y/ y$ l]5 y$ m+ L! v/ C0 X& \
set [local-reputation] of myself (local)
1 `7 _' h1 U' R9 Oend
! M9 ~2 U) W; z9 P6 t0 R/ t& j# n" q8 f8 ^; ]
to update-neighbor-total; @- I' d% d; M& W# c7 x
; u' m! r+ h1 r- ^; y
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]" E5 N8 j2 J, b  ?% Z1 }
" {& _: z4 Y( G# B

) [+ p/ e9 b& D- h* g1 qend+ `$ C4 k8 {  X  j
0 K0 w' M+ [! R& B1 b* n
to update-credibility-ijl & y& _9 I) J2 g
; E; Y% l. A5 F3 F: q
;;
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。
* q% R8 H1 w/ g# Mlet l 0% [5 x5 }; C. _# A5 X  e
while[ l < people ]! Y& H  a; g4 V6 S
;;
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
7 L% t7 a" F; Q; a& R) B  U[8 n- y# g/ _0 m
let trade-record-one-j-l-len length item l ([trade-record-all] of customer), p" T) ]; r- u: v6 R
if (trade-record-one-j-l-len > 3)
6 }5 a( y& N, T' L7 k[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% r; E4 X3 Z- M
let i 3" l! u. l) {; d6 B9 P
let sum-time 05 M$ _4 {2 _3 _0 Z  k6 \
while[i < trade-record-one-len]
1 y, M  K0 E; G' ?0 \; j9 s[8 N$ y; D5 \2 M7 }' P
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
+ U7 L# @1 c! O  M# Mset i
# m/ `1 ~+ N  k# z& I( i + 1)

! b" S# p, d2 C]
/ ?* a: p# v; `8 `6 _- e2 W# Nlet credibility-i-j-l 0
# V6 S$ @3 P0 `1 D1 y* ^;;i
评价(jjl的评价)* o2 I1 J$ H- ]" w6 O
let j 3
( Y- [; c" G) D; Ylet k 4- i4 {  D) E  l" P) W# Q
while[j < trade-record-one-len]2 I5 r6 C" n8 M
[4 l, @* F8 g0 `! S7 o+ T
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
! Z: D' W5 y9 B$ w' o! p& Z$ P: Cset 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)6 h7 U8 g4 g  z7 `
set j3 H3 m" V/ b0 V$ P! b: _5 t' m
( j + 1)
( ~# _) y2 z: ~" O
]
! g$ @% E3 J* aset [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 )), ]) O4 h8 J+ Z
* c+ b4 E2 [1 I1 s/ Z
- O; ^1 a8 T, b! e( p
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))$ y/ D8 O( z  b7 K
;;
及时更新il的评价质量的评价
4 \8 S, V% y1 B# h+ Mset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]/ o$ k6 d! Y0 R! P: v
set l (l + 1)2 a- H3 R0 a2 u* T" b9 Z; a: k, G
]' w8 D: {9 q/ Z
end
% P' K$ j  {: ^8 @# u! l/ J
7 P  z8 ~. E  b# y: m$ i3 Pto update-credibility-list8 y/ A% x+ u/ u0 a3 x
let i 0
% L; e2 T+ j: C: F6 [while[i < people]# U( o1 f, Z' K" l
[
8 M3 s9 X& q' S5 d4 p5 \, B( `/ Dlet j 0
: `5 ^4 L" R! l4 O0 Zlet note 0& m0 t. C0 Y, p; s- }+ R
let k 0
( l- O. _5 R$ P2 @/ |% T7 |0 Q8 H;;
计作出过评价的邻居节点的数目
4 K$ O7 C' c3 P8 C1 Owhile[j < people]4 i; p! e$ u* p6 n- O  `+ H
[& a8 X1 e0 W1 g) ?8 o
if (item j( [credibility] of turtle (i + 1)) != -1)
1 K) Z5 i) h- F9 n- X;;
判断是否给本turtle的评价质量做出过评价的节点
0 k$ q" b3 |. p$ o; |$ F% \[set note (note + item j ([credibility]of turtle (i + 1)))3 p. ^" n- W2 H4 r! k5 E. L* H
;;*(exp (-(people - 2)))/(people - 2))]
+ j# a/ a) K1 C) b, V
set k (k + 1)
* W, C  b4 L! n8 J$ L]
* E, X4 H! w" D  q' a* pset j (j + 1)2 S  x3 c- l9 t1 M9 u9 Q  z# h
]
+ U' Z6 w# i  Q. Y) Mset note (note *(exp (- (1 / k)))/ k)
" h6 o# R: @- h1 T6 }  \( xset credibility-list (replace-item i credibility-list note)
2 W0 B( z3 v8 Y3 P: Y6 p. yset i (i + 1)
0 Y; M0 F: r- o7 `% E. f]6 Y+ |$ k) a  Z
end- }. m5 o  n6 o. R+ }) m. a' q
8 V+ a# ^' C0 V
to update-global-reputation-list8 F8 P& z% x* a& U/ f4 K5 Y
let j 0
/ @: Q* u% w+ E6 x4 awhile[j < people]8 e7 i  X' Q7 H& E( g! _8 @
[  N3 [( s$ M# X4 d% ]% {
let new 0
: C% n* A# ]: i0 B* }; g3 `( ?;;
暂存新的一个全局声誉
9 v6 T( r9 ]( ~; flet i 0' ]4 M* S7 C' T/ g
let sum-money 0
2 R2 S) W! N) T" r( vlet credibility-money 0. E& g) u; N% k5 E( x
while [i < people]
' z4 q  f2 U8 t6 i9 {6 O[/ C6 H1 i: i2 V# l) w9 Z, k! B
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))% p0 g2 R, T! q8 i% h) ^
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))% E' H, U4 D( `: p& q% X. `
set i (i + 1)
8 `8 V9 [$ t' q' ]! d/ u# o- u9 t]2 P9 q+ Y6 f2 {
let k 0: i+ U2 `8 n( u$ U; m8 O. F; i; w$ t
let new1 0
7 D6 k( D' [% g- ^; Pwhile [k < people], Y) g9 s. Z" i) u! u
[( o( T' B3 b* K0 ]8 H; 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)2 }' i9 c* K9 B. d
set k (k + 1)4 r  D0 J! P; O% l" J, C
]
/ G4 i7 I3 l3 R9 O9 B! Aset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
& Q  d3 i* M6 Y5 E  l( Y! dset global-reputation-list (replace-item j global-reputation-list new)
8 a. n7 f8 W  Q! }set j (j + 1)
+ \" r% r1 Z7 T! X* j0 s4 r]" f$ [/ N7 R3 h+ V( R' ?
end- Z9 [, P( a5 G+ _

! P1 a( w2 T! q
' j* h# F6 J& H) G% O' K( w
" g8 y) f$ N) g$ _& r& _1 Qto get-color/ s/ D! ?7 T. N8 R( b8 j

+ G+ e" L6 S4 i, S+ Iset color blue
( G7 z$ }0 y7 @
end) l: Q# z8 n- ^; q
+ [. c! I; Q+ q
to poll-class
5 X  X* Z9 X/ l9 Yend4 D6 \4 M' W& B/ m/ n: k: I
. V7 z8 E% V, |: {
to setup-plot1
) J6 N/ u2 b# N  r( W$ t5 _8 \: n' X
$ `7 ]5 S0 J0 \  ?  yset-current-plot "Trends-of-Local-reputation"

1 \" [) ~4 U9 X; X+ p, l
' O( h7 c' W) \. ?/ [set-plot-x-range 0 xmax

# E- I8 @9 G0 S' K
0 \* ~. W& O" T, L$ D+ uset-plot-y-range 0.0 ymax

( R) E5 _2 P% o' q0 M, Hend
; |4 v7 f4 ]# X8 U
+ ~9 ~3 a6 N6 j/ T7 z* X: a: Gto setup-plot2( l" D$ F( \5 g+ J5 H& F

+ ~6 K$ b: s) E, n* N0 T& R: l& `set-current-plot "Trends-of-global-reputation"
* w" g1 o3 D- R: f/ y5 {

4 L  X9 L; ~  N$ ^* k& Iset-plot-x-range 0 xmax

7 w$ o! @0 r! Y5 X1 e4 \3 `# E2 J! ^0 `% u2 L5 Z1 a1 R8 N
set-plot-y-range 0.0 ymax
) d$ j; b( C5 C6 X: _2 [
end
( g3 z. ~3 M* }* N
. @7 O/ r4 H, d3 K. Mto setup-plot30 V1 \9 ?  m: B. u+ L

' q( A( q: p( ^& _4 Y. Yset-current-plot "Trends-of-credibility"

4 o( D. N' y3 g+ J
1 L; L# r. c/ H  \- fset-plot-x-range 0 xmax
' \8 B( Z1 o+ _5 ^* g

7 k! l+ R2 v. @' @set-plot-y-range 0.0 ymax

1 G4 z# u* b: e! zend
% @, u0 n% ^- m
8 v" |' r( p- U2 S# D( rto do-plots7 Z$ X7 [! b+ J* S4 U2 S
set-current-plot "Trends-of-Local-reputation"' w  n' V& S9 ^0 l. |
set-current-plot-pen "Honest service"2 J* O3 L. Y8 m" E9 @
end% f1 h1 q* Z0 W) _4 v3 n
- ]; ^) f& B$ r  x* T
[ 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.
% Q( v+ ^/ O7 s/ w( z) h3 q- n7 Q4 s* X  ~  D9 q# |
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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