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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:! R( N/ g* K( t  i( W4 v
to do-business
+ n1 T6 n: @8 p8 Q9 ^3 S3 U rt random 360) f, {# D! \& m  I
fd 1' y7 }  l  `# R( z6 ~" p
ifelse(other turtles-here != nobody)[
2 ], [2 q! G( F   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.& {% o" Z6 ~% I* ^- S
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    1 L1 R% m3 T* F6 l& y7 d/ R
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer2 g2 T4 C2 G# M  e$ D/ W
   set [trade-record-one-len] of self length [trade-record-one] of self0 |+ d" r0 r. t# ?. f2 G
   set trade-record-current( list (timer) (random money-upper-limit))
0 G( A: t1 L& U, e$ \3 k$ L" Z# |: S0 r5 L) y$ `2 _
问题的提示如下:
$ i, Y& p- K5 o& F0 j* m7 ]( a' p. R: e& t) b8 [5 w& i% U, w
error while turtle 50 running OF in procedure DO-BUSINESS
7 S8 R8 _/ R6 X/ ?  called by procedure GO* c3 w' Z8 W# k5 P9 I; I0 e' M
OF expected input to be a turtle agentset or turtle but got NOBODY instead.2 m( h/ q7 M2 C5 w2 u' s. W4 i
(halted running of go)
* e% `* L; y( S* ~7 E( W5 W
1 J8 N: e/ {  @  z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~~
  ~. K+ Z4 X% _6 v+ F2 Q2 J: l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
7 v4 U' E$ u3 z1 vglobals[( j# C- ?) i5 `0 A
xmax+ G: h+ }  f  i" \
ymax
% p% @4 a( ?! eglobal-reputation-list
$ X1 p- \2 A! a8 s% R( n& |
9 W1 b3 S/ I! N. Y$ R;;
每一个turtle的全局声誉都存在此LIST/ m3 |. y7 x8 |1 t- b3 ~" M
credibility-list$ ~8 D: @8 `: C, Q! O
;;
每一个turtle的评价可信度8 O2 U. b# h9 q& K5 ~8 D
honest-service- G8 a- x% {  O3 l$ m" ]
unhonest-service
2 H% E2 ?. ]: D$ J; P- f  ^oscillation
/ A, U7 G# S1 R: r1 d5 Erand-dynamic' T5 }8 J# _. y) e
]
6 g2 {; d( g5 v2 ^5 R) }! H; f6 o& G
# S! V5 _  P, i3 y. s5 O6 @turtles-own[3 x2 l0 O; M( U4 W, _8 Z  b
trade-record-all
" u  ^9 _) k8 P  p- Q4 o;;a list of lists,
trade-record-one组成0 U4 L! n" u7 l4 k) y) J+ z
trade-record-one
1 Z' u% F, @( b3 O. @;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
# Y1 h  q( v) x9 R. _. d" J( R
- a/ G% `: R: ?$ r  I;;[
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]]
, L" V+ n+ N, z* Itrade-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]
5 c- C' m( _2 H: P1 u  u" r9 i4 Kcredibility-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, ?# J( X; M3 f; w; R) X/ R! T
neighbor-total
) T+ O: l7 q3 \7 e;;
记录该turtle的邻居节点的数目1 {$ D: e/ }2 ~+ E" P
trade-time- r& C% [3 I* t& z2 j
;;
当前发生交易的turtle的交易时间
+ k7 v- q* S8 `& Bappraise-give
% I- C4 O+ M) ~; v( @( o! w' z& I;;
当前发生交易时给出的评价
$ R# E' ~: F% z4 N# k' w. G6 @  tappraise-receive7 e, |, q: ?) \- |
;;
当前发生交易时收到的评价' m- P$ P* ~2 [9 z. k# @
appraise-time
) d2 C7 |8 _" {8 T1 H3 W/ k+ U6 J: V;;
当前发生交易时的评价时间0 i, J2 F3 B  p% k
local-reputation-now;;此次交易后相对于对方turtle的局部声誉) ~6 [& K) E. Z3 e/ `
trade-times-total
( U6 L. F2 s  t# R4 w;;
与当前turtle的交易总次数" ?! f# V# Y( f
trade-money-total
! M* \# a! {; n# v;;
与当前turtle的交易总金额1 i( w* H! M! S# x% o7 P
local-reputation4 M5 Z9 Y& d# q, D
global-reputation8 |  R9 i: i! B1 a9 D0 Y# H; u5 v6 v
credibility
2 W1 ?2 e2 \2 h  L  ];;
评价可信度,每次交易后都需要更新5 H! H( ]' R/ ^+ R" E* M
credibility-all
5 H  I0 V% Z9 T# P/ w;;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
& E. p. V$ D  c) X; t0 d  y/ g9 |, X5 W- a) Q- ~
;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.55 o- Q" f$ `5 R/ c6 C) Q. E
credibility-one
1 O8 x  I# J. I% m2 C3 m;;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
) `& T& b$ F% p! X" b; j# Wglobal-proportion
( R6 e# Y2 ^" Dcustomer
, N! l0 A. c7 g; k/ x$ Ycustomer-no! i! `, C+ h: |# d, \) K
trust-ok5 y+ G, S$ w( t% Y8 X2 t
trade-record-one-len;;trade-record-one的长度
% K; U+ Y0 |/ h( [; Q  a]
3 c1 k6 S- g7 ~% i0 H' g+ {2 B6 g5 |% p, q1 z6 ?
;;setup procedure
; G' S8 V  ~3 K5 h% o! J, }$ d  M/ Z
to setup6 k  F) S" b( L9 A8 R" R0 v+ t6 b: P& e( ]

' Z9 ~0 `" c9 h0 Z( g+ Eca
# V. v- v: x$ ?

2 S; v) n" X# F, ]0 S* F+ Hinitialize-settings
% g4 {) Y( ?7 V8 b9 s8 {0 F' L& J

: @# x6 D+ R9 `' i/ e/ K; D$ [crt people [setup-turtles]
' C. U! Y& ~2 R

8 t7 [3 m9 K" o2 c( U$ f* greset-timer

; G- q9 x; Y3 ]& Y  u9 i) P0 {7 x& L  P! o! U
poll-class
. F( Z- [6 W2 f
0 X5 r# D3 v# I0 l1 Y
setup-plots

& r' P% p% B! J# V7 }" g; h% d% W) F7 \4 ?4 V4 @; B0 @; j
do-plots

1 f  U7 s! n4 @; y8 H7 i7 Aend. [7 R3 d) ]$ }
5 b6 P4 c$ J" O' J7 M. l
to initialize-settings4 T+ r# @6 H. v) T5 f# @1 `. u& O9 y
* r( u) f( ?8 e# W2 N2 m+ b
set global-reputation-list []
7 `6 q, G2 J+ W  {

$ u) q. E6 J) Xset credibility-list n-values people [0.5]

0 [4 j! x0 m9 @9 J: L
) c* D* K" K1 ^set honest-service 0

( p8 u: G# n  A% r# L' F5 }6 t6 v  d, v2 P0 X1 C) m4 l
set unhonest-service 0
4 }& m) x" M( X  v
$ p# p4 B0 {% t' q( a* [8 D
set oscillation 0
4 o- ?: g2 U% u- _$ j

6 e4 g+ b2 l. C" J. T! oset rand-dynamic 0
8 j/ H* D1 g' C. D
end7 ]$ G8 P7 O! h) c8 j. ^
; Y+ u& X$ ?7 @$ S  ~9 M# }2 Q
to setup-turtles - U5 G' G: S) L! `; |
set shape "person"2 }* ?2 b* E" i5 ?8 U+ l
setxy random-xcor random-ycor: L1 Y/ O- [# N  w  b, ~
set trade-record-one []
. f: U+ V; p2 T, [3 {- \& i, o
1 Y$ z; p: m4 U, h2 [
set trade-record-all n-values people [(list (? + 1) 0 0)] , A8 S/ m; p. J6 \# r7 D) y
* Q( l/ ^, g& D0 u- f: d
set trade-record-current []
9 M- N4 s# \0 k9 {set credibility-receive []5 q5 i% O6 h& }1 N( j9 z
set local-reputation 0.5
) g* x7 @; h/ p. Mset neighbor-total 0
/ |: j5 N4 I6 v, Mset trade-times-total 0) @, h1 ?( t$ A: d. W7 `6 F! I& l! J
set trade-money-total 0
: D+ s. V7 u/ P  f, Zset customer nobody. ~7 d$ i6 z. S5 d% v
set credibility-all n-values people [creat-credibility]
2 Q$ M5 z3 ~9 d' X: mset credibility n-values people [-1]
& l) n- X, G; R! g6 k* |/ C; dget-color
4 l: m* s: u. c7 O

& y" i4 w) U3 A5 h: }. ~7 w' Vend
3 j1 ~$ ?) |2 d' C
% b! ]5 J# g! f- i5 o+ k  Dto-report creat-credibility2 i, k/ ?6 D  g* K: I* r* u
report n-values people [0.5]
% G/ B4 u, b9 Y# ~; H: xend0 U- _) s# D  ^/ I
. O; ^& d8 U' s* X) d# K* @
to setup-plots
- i/ J( w( E; E2 Y8 Z# R# R" P- J: `* Z. U9 ?
set xmax 30
/ ?0 f+ G# O, @2 n$ T

. E  Z, A+ D; Fset ymax 1.0

, Q# V% V8 }& F2 Y3 B) F- f
$ j& }7 I/ F  o& @( x" L4 Pclear-all-plots
. |' |7 N; J3 N' Y# w
1 n3 n# K5 {, X/ G# ^
setup-plot1

; j5 Y, {# S2 s" A! |5 e$ o3 O$ w' D' C
setup-plot2
$ p8 g: I$ r7 |8 X7 j6 _

5 T- r% Z4 q- vsetup-plot3
1 W3 |& y% G! b$ [% i8 h
end
; r& w* `" c! T/ p9 ~9 v& \! ?: I* [! \8 K. i8 @1 X
;;run time procedures8 O0 }5 T+ C1 h, t9 ]& m
8 Y7 ^3 w0 |  V: ^3 E; Z8 r/ Z  M; c
to go- u1 ]6 S' f1 Z7 e/ `% m3 [
2 C% o) F# {  l: w9 Y  V/ b
ask turtles [do-business]
$ Z2 a! A- i) t, c
end) F: B) t7 Y2 D) Z
* F, I2 ?! z8 i/ @
to do-business
! m# P9 |( x! c8 Y2 Z: @

$ f$ w. e# J# z: s* g2 N
4 ?0 e# J4 t& [3 {' Trt random 360

. {0 l7 V5 {( W/ a) O% P! ~
3 ]" \3 J& J4 {  Hfd 1
: P& h4 l: v0 y5 `- C, [
/ L/ W3 I; D  J  l
ifelse(other turtles-here != nobody)[

8 ~) g5 v2 }  p) C
, _2 M$ e; q. T9 F; Oset customer one-of other turtles-here

+ o2 _  |5 I  I1 u3 ?: P/ ~% |5 u+ Y( d' a/ l" r* k" P; t& w: `: U$ O, n) A
;; set [customer] of customer myself
3 `% o- q* x, T. m; M4 J, a

7 U3 }& s2 s; N7 u3 x1 {set [trade-record-one] of self item (([who] of customer) - 1)
" T" ?7 I- i7 F[trade-record-all]of self8 N8 {0 Q8 `4 O1 R
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

5 K3 K. x) f& o, S) k% d$ K
3 S  F' x& [( C( |) p) pset [trade-record-one] of customer item (([who] of self) - 1)" U$ V3 z' g) e
[trade-record-all]of customer
6 w" E1 p" {- t. P8 d/ v) t
8 H) g, R7 H5 V2 F9 g6 E
set [trade-record-one-len] of self length [trade-record-one] of self

" `: L: Y- l1 Z7 R( w6 e. k+ |( g% {
set trade-record-current( list (timer) (random money-upper-limit))
, a; d& P0 I0 F4 L* ^+ ~
" _3 N& [. B1 r: ~0 i
ask self [do-trust]- w9 o, E+ K) v, V* K9 B7 ^
;;
先求ij的信任度# U! S$ p) S4 B7 y9 N$ m+ _$ a! w
1 x$ u# d9 t6 ^* q$ u3 m1 s3 R
if ([trust-ok] of self)
  P+ V) S, x9 a% m;;
根据ij的信任度来决定是否与j进行交易[, r6 f( A: Q5 E# l1 _. C
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
2 i4 d; x# z# ]2 A/ {+ t: i: w5 r8 i( X, }  ]; O' ]* \% ^3 T" C
[
) }+ ]' r* H9 e

: I+ h  f% l" Y5 w0 wdo-trade

: a) \9 t0 ~9 d; `- p( P4 j+ w, t0 b/ e
update-credibility-ijl
% `# r/ M$ C' H5 @8 ^3 ^" }
. ?$ u+ Y, T* O+ j3 y
update-credibility-list
6 E3 I* x7 R# {% N) t" B; k% y9 O
: v7 B. u, t# ~* @8 e* Z8 u
. G" q, K! P/ p* u# o6 d
update-global-reputation-list

( q& d- s4 w2 h: a8 H- H* e- V/ Y) f+ T* S5 S* W5 S- J/ M3 [! G% c# F
poll-class
1 Z7 D% q' d" `7 Y4 I: w
' L0 f/ F- F  m* a
get-color
# m. X: p$ K6 `0 L% r
( s* D% ]0 t" @3 G, G* _: ]
]]! d" W& E9 w, G% J
( {6 w( ]1 v! J/ C
;;
如果所得的信任度满足条件,则进行交易* e, ^  N8 N1 W3 p1 E/ `
4 T" k# D( W; c# u! `* \, {
[
. d% }8 T- W$ E5 V, l; Z7 x
2 @9 {2 i" D8 ^
rt random 360

) j. j3 E( {7 B: {" ?; t) p1 E$ {: x% X: z0 u
fd 1
# U; l% c% W( E+ M  R

8 M7 h( [2 U7 K]
' s2 B- ?5 w5 d' w; f# K: w$ ]

( P# ^" B9 }( ]  \4 T9 ?6 _end

3 }$ F: M9 a; k5 z1 A7 b& z& w
to do-trust
) M# J. w8 _" I  f" jset trust-ok False$ O8 {6 L: _: W3 D- O5 t4 a
6 k+ V5 S3 o' h4 g" u' L3 @9 @
6 {' Z4 Q/ {9 S/ q  t* F* a* Z
let max-trade-times 0
- w" @" {3 P7 }) F3 k0 W0 Sforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]0 N4 `! O& T$ z3 `5 e0 ?
let max-trade-money 0
% G3 z( Z- C* T. G) d- s3 gforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
2 [' R. F; ~( T6 Z( n  F9 E/ M5 f. hlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
6 T* e/ Z2 r  J
# f2 N& t( a) z( O" C2 {7 p* U

: w) A; \5 R4 J/ `/ Sget-global-proportion; W9 U- q$ d9 c8 f
let trust-value9 T3 b3 w, R8 \3 D
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)
+ {2 g, ^$ H  p7 S
if(trust-value > trade-trust-value)
9 O5 K( S3 Q5 a4 |2 L9 f9 a[set trust-ok true]5 U$ m3 s0 h  x; z- v  |3 ^( d
end0 e1 _( y5 e1 r

, P  k8 O) X! n5 X  w& dto get-global-proportion: M5 h( b) x7 o1 c. f
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
$ o( r) {3 u$ p" g[set global-proportion 0]% ^+ c9 n! t/ M; l+ {8 [
[let i 0
5 N6 ^7 }1 A2 w0 }1 H3 ylet sum-money 06 \% p+ o& q( A% Q% D& s
while[ i < people]
0 W0 C" t/ c* B; y7 h[
  \- N9 D+ m% g) m4 b3 hif( length (item i
  r, V3 r1 }) ^( v[trade-record-all] of customer) > 3 )
, T, ?' z  d% O) N# @
[
( Q2 h$ U  C' N7 G' r" v1 ^; cset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
* ^$ Q- C+ _' a, g]1 B# g6 r1 F, y, e; g
]0 F4 G2 _% a* M: p3 ], m/ u
let j 0; f; |7 E, l5 a6 [
let note 0
/ T3 H7 M; D8 s; R8 X$ y+ Dwhile[ j < people]
3 |3 m  D4 l+ u: M[
0 r; K! M0 N5 n7 e7 kif( length (item i/ J& _/ s8 E2 R! U$ q$ M, x1 ?7 u8 [
[trade-record-all] of customer) > 3 )

% k2 f& \4 t5 B, C8 H' f* R[
5 Z9 A+ V+ V0 ?7 J+ Hifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
* o( D7 E4 R# B( P0 m3 t& W* q# p; m[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]5 }' `8 J2 J, e1 A: ?8 r( I  U% C
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]/ {- Q  r5 u9 G+ a1 F7 G) n8 C
]6 M+ F0 D% V1 U# X$ e2 c
]6 j& G  b! j2 b4 [
set global-proportion note
" n- j6 d/ M! b]! k/ O9 s1 h' l9 B7 _
end. u8 d. @% d) m2 I
4 T/ i) [7 H6 M, W+ ^' x& g- g
to do-trade$ j8 g; v! j: o! W$ a0 U( i. v
;;
这个过程实际上是给双方作出评价的过程7 ~2 b7 i: N& e. \9 j5 _; F5 M9 K7 g
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
6 s1 Y3 s, d; d0 ?& [set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价8 |7 ^8 m# i6 l/ ?0 D/ W! U& i: O0 @
set trade-record-current lput(timer) trade-record-current- Y2 |) R" U+ Z6 j+ Z
;;
评价时间! B5 O+ @# v& B' B4 y* @( |! C
ask myself [
: w4 G1 V8 g8 T8 C! Z3 nupdate-local-reputation. c/ B; s1 x* k  k
set trade-record-current lput([local-reputation] of myself) trade-record-current
2 q0 R4 g2 R- J, L* B$ ~]7 v: i  ~0 ]$ _) ?  V
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself8 d7 K& G: }0 @& T8 A- z
;;
将此次交易的记录加入到trade-record-one# p! j) _$ H) V" F7 K: k; r
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
( p* @2 w6 p+ F# W2 ]let note (item 2 trade-record-current )  Q2 C4 Y3 ?( t4 k& m( v: M
set trade-record-current8 _# {% s( _7 M+ z" w7 o
(replace-item 2 trade-record-current (item 3 trade-record-current))
0 m5 z2 J, n0 k% N9 d! X
set trade-record-current
9 Q. y6 M5 v; H- `. C0 G6 n(replace-item 3 trade-record-current note)" [0 m3 X2 d  J

' `) S9 D' l8 [. I9 |; D+ r" p/ J
3 s: z# m+ D! b
ask customer [3 f# _' j( G3 n( @6 N5 m$ @6 @; Z
update-local-reputation
' @( O) E; t3 r7 o8 J: Eset trade-record-current
+ ?/ J, t8 }9 Z- O(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
1 {! S6 x' @4 F+ b; ]2 Q
]
$ ]' g; F! ~- C$ J$ ?/ ~
' H, r, \( I. N1 D

. q& P3 n! u2 m4 kset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer2 j: C$ \! H: g- r$ F, p/ v
. `) h8 B% q" S8 c" ^* w
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))* }- G6 j+ W: e: v5 F+ H+ T7 {1 K
;;
将此次交易的记录加入到customertrade-record-all
; ]! }1 h3 w9 _7 cend4 V7 j5 u7 m( W. [

5 r% p1 z( ?0 s  Z- W) u. Ato update-local-reputation
7 G" R0 _9 @6 n7 _8 eset [trade-record-one-len] of myself length [trade-record-one] of myself( g. i# U! X$ C# P
9 C7 ?- \. o1 `- R7 n: a

- a% y6 B$ n4 E, h$ ]* O! A5 Z;;if [trade-record-one-len] of myself > 3

8 q' D" B: x) Q# k# K1 wupdate-neighbor-total
& u; A6 [$ [  P' W5 V% F;;
更新邻居节点的数目,在此进行
! B8 z0 _; h' o  H5 t) hlet i 3
' f- {& t1 B8 E$ [" \let sum-time 0; B, q2 ~- X. l1 q
while[i < [trade-record-one-len] of myself]7 g; p# f* c: d# |; o
[
. T: l3 x8 D$ [1 Y. |" ~8 s. mset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
8 p" d' U' u% o; Fset i; W  o' g9 W7 D5 r. o4 K
( i + 1)

5 k9 l( B4 ]" G]
1 ]. F  s7 E: O6 V2 Qlet j 37 C. |# x! _! y9 o
let sum-money 04 f# ?- s0 o, B! R
while[j < [trade-record-one-len] of myself], u4 A+ B8 b1 |4 c
[
. H( c. y; g/ N+ B9 J( V2 Nset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)) b7 q: i: Z! H; L, u8 _- w0 n
set j
  X( t- H) s7 _9 |( j + 1)
! L  H* W9 z6 F: w
]+ d$ l! N. }4 v0 ]% T* J
let k 3% Q( W) Y/ C! z. H
let power 0) o# p& ]. N5 L4 c8 e3 o
let local 0
2 g1 N9 N+ ]. T2 c% ]* Mwhile [k <[trade-record-one-len] of myself]
. ^- G  v( ?) V# F& ^$ t8 ]0 k9 z1 Q[
  A! g5 q' c$ h  `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)
2 \" n) ?/ d$ C, T* aset k (k + 1)( I$ f% r- T5 a  U8 X) F4 r; @
]
+ U1 @, e! ~( G* c) P0 D8 k9 J/ [5 ~set [local-reputation] of myself (local)
# a; n" z7 E" B0 b3 i! b8 r! Rend, _/ |. j% |( {& a; R( H+ ~/ T$ \
* }9 ]% m) ^/ L' R
to update-neighbor-total6 r7 R; g6 _$ K

! h7 m  D" l: \# f2 M: xif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
4 z9 Y4 S/ j8 \
3 v6 j7 X( }9 W4 T+ ~& j5 e4 d
( B. a0 _( c6 c" G1 y
end
% z& I$ i, J* v7 N* r8 p
1 V6 c' R" _. w5 x0 h" gto update-credibility-ijl % k& `  r! N  z: i7 u, X

% h) L3 n8 T0 q7 b  X& E7 o" K;;
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。9 r( B3 r$ r4 w& ~
let l 0
: ]3 @7 \  n" Y0 Awhile[ l < people ]
. p) V' p  w3 D) N& j;;
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
% b8 N' J0 T4 @; O  {[
9 k" V' p. W6 x+ S0 C$ ^let trade-record-one-j-l-len length item l ([trade-record-all] of customer)8 k. p' J7 q/ I+ A/ C- ~# q) R
if (trade-record-one-j-l-len > 3)
0 F; ?" y# m8 `  S[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
/ m% x( T) I  I- s; E- ]let i 3
& l8 P( X8 _% Flet sum-time 0
: f% w+ ~/ t3 E" a3 T5 dwhile[i < trade-record-one-len]
# u! [7 a6 n8 l; Q0 n. e( M8 s[
. L( J+ M" B' |+ P5 s3 c7 aset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
) c4 \: C2 y9 u7 I* A* V% s3 gset i/ t$ q, h' h) N
( i + 1)

: {9 o; D" E  }2 M]" h. o1 L; G& J! {9 W6 R3 b
let credibility-i-j-l 0
  u/ |0 {# D% c# z;;i
评价(jjl的评价)
' ?( o/ u& Z: X6 t1 M% n" Qlet j 3% [4 T6 [7 E5 `( H
let k 4+ A, K+ w' Q& `3 r
while[j < trade-record-one-len]. j) e5 E+ _3 R' y( v
[
: D8 {" s8 D3 o6 owhile [((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9 y0 h& A! g. Z1 @
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)
9 C- ]9 h" \6 g6 @set j
) t' P3 H, m) P3 L, i( j + 1)

0 L7 {$ R; f  d4 e5 x]4 H  {, U8 D$ L2 q
set [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 ))
$ O5 _7 G3 L" o& W+ ?% k  L6 |, y* s2 B/ l' W# G6 `

7 I$ i3 U2 H$ i% u- Rlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
- N1 j3 o( p/ t7 k) m- F;;
及时更新il的评价质量的评价
' d  C. M  B* M* S( qset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
; A3 u" E. b1 A9 V# g4 o$ Lset l (l + 1)
* U0 ~* {# J6 B) j6 O8 _], c6 m  L/ A: \' w
end
% _6 u3 U9 }- D" C1 P. g0 r3 w' O6 c3 x1 Y7 i; }
to update-credibility-list
9 e& k9 W7 }# g! {* `let i 0& G. K1 s9 e$ Y; b) I
while[i < people]
, m# X5 L8 t. E, I; s9 p[7 V( A7 [# b1 f' x3 G% s: v
let j 04 F) ?- S  }! Z/ ^" r5 b
let note 0
& Y& ~( o5 x! |+ P, j4 T4 glet k 0% m8 p. ?! m* g% d7 J
;;
计作出过评价的邻居节点的数目, n! @. q5 X% E# b
while[j < people]* C* n% {, O5 \* D9 Q  d3 j
[% n9 B' T& {: t7 s
if (item j( [credibility] of turtle (i + 1)) != -1)
% Y; i1 ~0 t2 b9 h;;
判断是否给本turtle的评价质量做出过评价的节点
1 L" q, Y! G2 H( c2 {$ c" Y+ G4 E[set note (note + item j ([credibility]of turtle (i + 1)))
5 c0 t. w+ W" n6 A0 M! C# s;;*(exp (-(people - 2)))/(people - 2))]

) B' K/ v: z1 v7 h% f7 b2 Aset k (k + 1)
, U" {. W( n7 @. J' ?0 t& \]/ q& G9 p& R1 H7 K+ ^/ b- d$ K
set j (j + 1)
  y/ u& s5 o3 V9 t; |9 W, Q]
2 s1 ]( x* @! S+ Q# |set note (note *(exp (- (1 / k)))/ k): r2 Y; h: e) F5 o9 G
set credibility-list (replace-item i credibility-list note)6 \, k3 ?6 h; i: Z; R
set i (i + 1)
7 O1 \  f) G% e5 P* `1 H]
- Y& ^! r% K4 oend& ^! g6 ?' k) R. M( N. i
; N! _" ^0 E* a
to update-global-reputation-list) M. M9 e0 O+ Q) z4 _- o# y
let j 0
$ @4 d+ S9 k- w' U, dwhile[j < people]
  p6 E7 `$ Q) P5 f[9 _, q; ]; @. i4 {1 }
let new 0
; Q7 E  Z1 e, Z  i* Y: P;;
暂存新的一个全局声誉$ r4 d( K1 y9 o5 b" I& Q: d
let i 0) H4 b+ X1 M0 N/ d# q0 }$ z
let sum-money 0
3 v: A# H) W* _$ \let credibility-money 0
& d4 q4 R2 X3 D; i3 X( f) ]4 e% awhile [i < people]- z/ V. v# }* Q; v4 H0 H
[
5 _! p9 f! }4 t  d1 Z  C2 gset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))6 M/ \* y- N; O, [' F
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)), s, H, w7 W# b3 {% m% c; E0 l0 N
set i (i + 1)
* ~5 y- c) |2 m4 n" a: E) C0 Q]
5 {; G5 D9 g* M6 E# r6 v5 }let k 0) U8 ~. X5 {8 A6 I6 x0 r* }
let new1 04 B# Y5 V7 o) m3 s$ I, N4 i! R
while [k < people]  }- j' O5 J3 k/ {* b  g
[/ _% c+ U4 M* Z- M9 E( b6 x$ `
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)
/ P3 m  }% B! `1 T7 Xset k (k + 1)- I* J$ I4 D! X( {
]
" c- H) \9 N9 t2 D1 v6 Eset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
7 ^( y5 |  F  K7 ^2 ~. e9 M& X) X! ~set global-reputation-list (replace-item j global-reputation-list new)- P( Q) e# C3 f% ~3 h" i: R
set j (j + 1)  H" {* K0 W6 R/ F. e. B
]
4 U$ e# c7 I$ v5 X+ E& i* x! @end5 F7 _# K( t- [

, @) u" o; R6 }7 s$ l
; q5 b! I& g. B
8 `7 e, P7 j5 P* t$ [% ?  V1 Ato get-color1 C% `* B4 k  L
( |+ f1 ?6 J# m' l' P" m
set color blue

& J4 {+ |# R* z1 d$ Q* Iend
/ ]8 h8 z. U" y$ J4 W4 C
) f! @: I0 H% f- w- y+ u( c' Q' Nto poll-class
' U6 M: W3 k" F5 l/ Bend# y* l3 s$ f$ G2 e5 u( v

3 i2 z6 |5 h( o& |to setup-plot1" u" p7 O; s/ e0 H
% |+ O5 u( U. y1 |# M: O$ O
set-current-plot "Trends-of-Local-reputation"
; H# J: V. F0 f3 m/ m
% [* u7 {& `; ~, p7 n2 c
set-plot-x-range 0 xmax

% T+ |- w- _2 u- p& z' z' f/ U: @8 K: M" v! N0 u1 W) V# ]/ V4 i# u
set-plot-y-range 0.0 ymax

% @8 i& J3 ?: {end) F+ [8 V6 e, t9 u7 Z4 K

& C  D2 b5 e) P$ M5 Ato setup-plot2+ M  T' C6 t! F( W/ s& m

3 K* m, F+ p9 \5 T5 q% @set-current-plot "Trends-of-global-reputation"
4 |% g' m/ @1 @( T' ~9 r. n
4 P% h0 f& x. l2 j& L: ]9 t
set-plot-x-range 0 xmax
9 j6 K8 q! o7 ^" `/ r

4 U: x+ Z* _6 c8 oset-plot-y-range 0.0 ymax
$ B. y# }- b9 P: [
end
2 u+ C( H" C. C5 M0 g+ I1 Y* i4 @% @, g. L6 f! Z
to setup-plot3% [2 A8 d* W" h3 k
  }! I9 b" U3 r4 M3 P+ J
set-current-plot "Trends-of-credibility"

" E( ?3 R; S5 k6 Y- C
/ J) o2 i! K8 g4 S: i6 \  J3 Q3 L- f# [set-plot-x-range 0 xmax
% v( c) ?* J  E) }$ V

1 X( U# o1 L# c, \7 J% dset-plot-y-range 0.0 ymax
% O. d6 l) Z: R& i3 g; C
end
, W3 s+ R" y5 F
- ]0 c8 n: o% W) Ito do-plots
. R9 ~' g4 V) h- h3 L5 Zset-current-plot "Trends-of-Local-reputation"
4 j0 z8 U7 b( S7 v  k0 s) Gset-current-plot-pen "Honest service"
( z& l2 O. S( B0 _: cend
. k2 O" z) n+ h4 I$ {. z: }0 K6 d' b% @8 e( _6 \; D
[ 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.
1 O3 o4 \1 {% @7 B9 z# f( {# ~0 o" j" ~+ 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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