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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:
6 |8 I* w! ?& `to do-business
* A, g5 m3 I" V( j- B% ?0 Y7 S" N rt random 360: r  ?& `" z. [
fd 1) c7 s; A5 I" t
ifelse(other turtles-here != nobody)[
. W. T( @% p. y+ Z4 R! E   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.8 y1 ^- [% N+ X, e* v+ o' Q! L% \+ {
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    : V/ R" k- n8 A/ j3 s+ M$ m: J
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
! T0 w2 o9 O  r5 ?6 |   set [trade-record-one-len] of self length [trade-record-one] of self
  i5 f) X8 _$ g4 T9 p' G- d/ E   set trade-record-current( list (timer) (random money-upper-limit))
8 W9 f$ j. o( J, r* K& v
/ M2 N7 X, o5 R8 _问题的提示如下:
' b1 ^( I. `+ [; j! g* x6 J
4 K. ^/ y6 v3 m. q$ K2 O; p# rerror while turtle 50 running OF in procedure DO-BUSINESS& d# _: n" e2 A5 n& D- d0 i
  called by procedure GO; F2 r: J6 p4 Y' x; W: q! z2 P4 q% |
OF expected input to be a turtle agentset or turtle but got NOBODY instead.; m! X8 h# f6 O) P; q6 @7 }# y
(halted running of go)7 X0 S0 e  K+ z3 H7 ~, F

# W  U1 I$ m' U4 I6 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~~3 |* F) E8 E2 ?7 R- n: w% y# 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; y- m; R1 l) k# K+ N' j$ @
globals[
7 I" H: p: l' ~* bxmax
* \; l) C, |: Y" E9 j6 E* D. ?7 Wymax
0 Q2 ]5 d3 ~9 |: z4 s# ~; Mglobal-reputation-list
/ q/ y& U$ ?+ f8 w% ~
  L+ B  z5 l9 t- p+ A& _1 t/ }% b, H/ b;;
每一个turtle的全局声誉都存在此LIST3 V3 i# M* a  n# [3 J
credibility-list, Y# ~$ ]7 j/ h- m6 z
;;
每一个turtle的评价可信度$ e6 T: c2 u' V0 Z3 |
honest-service
& N( D! [7 O# b& F7 Q2 eunhonest-service* X' w9 c3 E" I9 n0 m6 Z
oscillation3 w- @' x; @8 m1 h9 `% [; k
rand-dynamic; Y8 S2 R% @* M; M( t
]) \2 W$ s6 Y0 Z2 [/ Q
1 R& Z5 Y7 z0 T. o2 @0 B
turtles-own[
7 n5 e9 @1 a  l8 Ttrade-record-all/ a8 G' `. ]4 n
;;a list of lists,
trade-record-one组成
$ t& [& w* E3 utrade-record-one
+ |) W6 L1 v4 v9 D;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
& N  g  o( G7 R
1 J, s& X& \0 w8 \3 v;;[
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]]
" R6 U9 G% J1 T' k! ?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]
1 Y! V9 e' R$ D3 dcredibility-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
# q/ d3 Q; g% }" Z( Pneighbor-total$ s3 i: a+ O% E7 H9 o
;;
记录该turtle的邻居节点的数目5 m3 C: ?8 E" ]
trade-time# d- h9 c4 J" t2 M
;;
当前发生交易的turtle的交易时间# `. e+ L2 I* c# t9 \; U: [4 {
appraise-give
2 ?, w5 W: H' d- F6 }) F;;
当前发生交易时给出的评价
. ^% S5 f8 _/ A: e: W* ^6 |appraise-receive
2 J2 O% E  y' P5 O;;
当前发生交易时收到的评价1 w0 Z- K$ o3 g" T1 F3 }) K
appraise-time4 h; s6 J/ }0 t8 a2 F
;;
当前发生交易时的评价时间; w0 y# ?6 S( f. m  p9 z" \$ s
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
3 s5 l9 W" B5 ^; C  a7 Strade-times-total* A' Q) K) V! |: L
;;
与当前turtle的交易总次数% Z! D, E3 W3 [
trade-money-total; j& q) U' N5 L* {4 W
;;
与当前turtle的交易总金额
9 h% D# U4 \& N) q' [4 Ilocal-reputation, f; b" e, {5 X' U) g" R& i
global-reputation! _. W1 s0 w- _7 K0 N6 W+ S- G4 c
credibility
) i4 B+ x9 U# }2 O/ U;;
评价可信度,每次交易后都需要更新2 ?5 Y8 O( h7 h+ K) s0 H8 @
credibility-all6 }& M, w( Z) u$ F' h/ e; d8 K% J4 B
;;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
  `% G" G$ L6 e5 A
+ @0 B# c( w/ Z& O;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5
. Y9 U( h! a: G" v1 u3 r9 Lcredibility-one
/ e: I+ ]: e4 N2 ^# P* N) o! \/ G;;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
+ w3 \7 X6 l. E' a# g" x: l* u. H. Jglobal-proportion
, p" z* E3 i  `( u* `customer
7 ?& R8 v( n8 ^# Ecustomer-no  m* Z+ Z5 E( P$ H
trust-ok
0 v0 ?) x! v2 D# W; a0 p) ?: Qtrade-record-one-len;;trade-record-one的长度3 I6 x) u: F' x$ X3 P! b* M' A- P
], f! c' ?0 l5 u& F/ k# a

. g4 A+ }" n& j, ~- h;;setup procedure: R" Q  z' }0 z- I9 w3 Y" w
/ a) s! D  _3 S" u6 \
to setup
" G9 \* i2 p/ B) G5 X/ Q) c2 J/ T1 S" h
ca
4 Z! F- k% h: K8 s# @

$ a$ B: l+ ?* {4 ~8 L; y5 Iinitialize-settings

! }" B, n8 h2 F! z/ _0 Q, ]! e2 U* u& F: T4 O5 J- O& b
crt people [setup-turtles]
, u+ H% f8 s% X$ b0 Z1 l5 K* ~

0 k0 y2 T! F2 |: ureset-timer
$ [4 D% L8 o, c2 E' P

. `" P' ^( u. H1 N9 J1 Y5 vpoll-class
1 N# K" [0 u" p* ~% t+ g6 J/ \- B( C

& W: x5 Y1 ~- q9 D, j: @setup-plots
7 D. B, s  V' w. a+ I
! ~% B0 L% N4 G  s, f9 I* _# Y; N; X
do-plots
) y1 F. ~1 x# J5 N! R5 J
end8 W: d1 P, q% Y( y3 [8 Y
3 I1 R& P' B8 A; g/ _5 B. L. o& n
to initialize-settings
; D, K  x5 _: }2 t
" P* a; P% D8 Xset global-reputation-list []

3 Q% W) w1 n9 ^$ }
! R. A& W9 P0 cset credibility-list n-values people [0.5]
6 s# q% o4 u" G; y: M
- T7 T" O9 G- R6 q; t
set honest-service 0
+ h* H, W" k8 C. W
, ?8 t4 X! n- \
set unhonest-service 0
1 V+ j3 i$ r+ _1 h  Z* P; o

. [4 w. k# w$ S% }' e$ x1 G( ]set oscillation 0

' H8 e( T# F+ i3 A
1 T3 y# I$ c4 |# `7 P  H+ H0 Eset rand-dynamic 0
; o1 m: X  Y) z# i
end
$ ]) ?1 r3 z, Y" F$ A& \7 K
$ |$ S5 ^: L1 b: Jto setup-turtles
2 L. s) `+ F9 l( Uset shape "person"
; M$ ^$ k, R: s# esetxy random-xcor random-ycor8 `0 s+ e4 j3 a( [& \2 P0 E' z+ o
set trade-record-one []
$ t) _  M5 m; x0 G: j

9 ~" Y" B, K0 `% j- |$ m8 G! zset trade-record-all n-values people [(list (? + 1) 0 0)] 2 w9 o7 [# g7 z  C) g
2 V0 h( A0 {- m/ y
set trade-record-current []3 M) O+ E* [5 O5 u
set credibility-receive []
3 n/ u2 T) ]# @" \; K9 |set local-reputation 0.5& q$ ~( }* Z+ N, p! C  w
set neighbor-total 0* A9 F0 j# n9 P$ [9 R9 T* ?7 Q
set trade-times-total 0
! X4 a' a' ^* h4 oset trade-money-total 00 q  P# s# c- l" ^8 H6 c
set customer nobody
3 e0 w6 r, y. N5 c- Tset credibility-all n-values people [creat-credibility]
+ E# D. B3 K! aset credibility n-values people [-1]
0 T$ L2 _& W$ ^  D, ?) |get-color3 A9 P( z* G4 B. g$ n5 p/ s, y4 u0 K! z
, L9 w9 t: ~! g+ F. Y: l- n1 Z
end
1 {; K7 ^, d" ~% u/ H: ~$ @9 M% e) [9 x* {. g
to-report creat-credibility
" V9 |$ ^, H) U' K7 v7 o& lreport n-values people [0.5]
7 X+ Z$ v4 M0 n/ ^$ {1 R. D$ k" G8 R2 Jend
( I+ T* U5 T# n0 I6 v
. b5 v/ c8 ^+ E2 G% g, z6 _2 sto setup-plots  D6 a. n( N2 d& z

" e) V; p( ~/ K3 @& X( Aset xmax 30

$ E' \* r  J; e$ A9 O0 _3 ?
+ n0 o9 n& |8 L$ \4 w9 lset ymax 1.0
. |" f. V) i2 C  s& Y! Z

8 r( r7 ~$ `& I5 u: ]  Uclear-all-plots
! L( E3 S1 R0 S8 C# w
2 ?: w$ W; u, ?& `0 S1 K/ ^! U
setup-plot1
+ O/ T" M+ l0 o" B* b1 `% b8 }+ j

0 n6 D2 f: Z. i+ V$ c3 z) V* Gsetup-plot2

! M4 y, ], Y0 L; ?, g5 i* m- X3 o3 U5 w$ \5 l/ E2 a
setup-plot3
/ `+ e0 s& J$ n4 |+ a. c
end, B; Q, H/ n7 }1 L
; G- I' J) ]; X- c3 x/ I! u
;;run time procedures5 n8 N7 h% k. B. p& |: c( k
0 s" c3 H9 r" J' F+ N
to go1 a. P# }) r4 J# j
. Y! T) `2 e7 U" a+ P6 i1 ?
ask turtles [do-business]

+ {" k' D5 |5 Hend
+ t/ u1 o: p; o& S& t) l$ X5 T; Z: g2 u$ o. c
to do-business - {8 ]) l" M- `- V7 I! Z7 V" U

2 f% V! H" M- g3 |
% }7 E0 V2 H( |. lrt random 360

8 h2 j3 q& j/ P9 y% g% T+ S
& L4 [! s' m+ Z& P: wfd 1
" z8 S6 T; h3 g6 H$ e5 x0 H
+ S" g: v& B* \' [1 ~2 b$ h" c( z. D2 D
ifelse(other turtles-here != nobody)[

/ S8 n: R7 k& g# [9 z: `: p
6 I3 C, i! Y" M" K' w+ Kset customer one-of other turtles-here
% N! d, w5 s3 X, }6 ]
# V2 k! g: v. w: w! [0 e2 {/ w; S
;; set [customer] of customer myself
* D5 r; w7 ~7 e/ \) l2 Z3 A
7 M$ V5 K& X% u4 z+ y
set [trade-record-one] of self item (([who] of customer) - 1)
' h$ ?) o9 S1 ?+ @[trade-record-all]of self
$ ~6 r4 i  f- x# F% ^  T7 L;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
% L7 P7 c7 w7 @# U+ ^4 k

5 P; b5 Y5 M# G/ Uset [trade-record-one] of customer item (([who] of self) - 1)4 ~4 v( C* }6 Z6 ?( ~( C8 W% r3 Z  i4 D
[trade-record-all]of customer
+ o1 ?& z  h/ F& s5 y, Q& S- _

0 F2 s# S- v2 e1 F# vset [trade-record-one-len] of self length [trade-record-one] of self
. E! `" n( ]6 z7 H: N# E  t1 f' U

7 {" P; {; W" lset trade-record-current( list (timer) (random money-upper-limit))

; I5 x; |0 l/ A6 ~
4 F* E' B5 H1 l7 {& ?ask self [do-trust]
4 s, v! Y- \8 a4 U8 U;;
先求ij的信任度! `: W) w2 I6 r: E0 q' H: L
3 |5 n* J& q$ c. {2 M
if ([trust-ok] of self)5 @, A9 P% ?* F4 w+ q. W7 N1 M
;;
根据ij的信任度来决定是否与j进行交易[& e/ Z$ Y) F6 o1 Y1 o$ V) |9 ~
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself+ R* O& \% b, v

% L! y. `4 X: }[
7 S4 m2 ?+ [& Z0 r# B6 N
% e, `8 H3 r4 d$ T" q7 Z
do-trade
4 o8 }4 U) _/ Y7 S/ Y8 Y* _. l

' d' b, @9 X( I; T' N! ?8 Xupdate-credibility-ijl

+ v- t" n5 ~" {& L! e2 \$ p$ j% u4 q8 E2 i( M
update-credibility-list
1 y; x! H) F  o% R7 j- g+ M

3 v  }$ c* m$ N5 ~! O- x4 g1 E; o0 s2 j+ M9 @9 V5 X9 H" c
update-global-reputation-list
+ ]6 T: O( C" R

( [* d: K8 `0 ?# ]* B: ]poll-class
, u2 q; `& s6 E! K8 g/ N' d
5 k) p. E+ \4 y, i" h. s
get-color

7 M) Z* x6 {8 _+ Q; |& k2 s8 q8 |0 k' n: k( L
]]) x  |% d4 Q+ H  |8 O9 V& n2 j. U

0 A7 ]/ w# Y6 D/ ^, q. o. O;;
如果所得的信任度满足条件,则进行交易/ j, ~7 w) ?( U$ `+ \0 H* p- v

2 y$ I4 g5 s: [. S- L2 O5 @- [[

$ }+ B/ w' \# w! E( `0 {" q5 c( x" u& K* ]# \2 f* p" A' s
rt random 360

0 k3 y9 L. X- L& }( ?8 m" l5 _) `
2 o( h& L) v* e& i, \5 Xfd 1
8 i3 J+ B( s* ?! {4 M
! M0 b, r, H7 a4 ~) u
]
$ g) |7 X4 a. P5 G
4 L' S. n+ u! a) f  @
end
) h0 A+ I7 J. R5 s: r

$ N" m2 i0 V0 ?; k; ?* j! ~* }to do-trust . `1 `# \# M  X- |
set trust-ok False
! P# [' l9 Z* u( Y" ^  f6 T( \7 U" @- u( n# ^5 V

6 W" w% }* r% O* Z4 P( ilet max-trade-times 0
( O4 t8 \9 S$ d4 E# j- Q; Nforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
. |# H7 A1 X( W: A. {# ~: G; U9 Z& olet max-trade-money 0
. q$ t. n6 }: U3 w& kforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
6 i9 T% k- f' N0 q- S& slet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))9 ]! F$ ~4 F' u2 }/ N9 a: L

" b4 {2 V. B  h" R' b
9 I' V6 v3 r/ s
get-global-proportion* ^5 o2 m8 z1 x
let trust-value
! i! Q& ]) @% l: f6 b' J4 jlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

3 g' t; V% n1 M  P0 N4 w& j6 G  [if(trust-value > trade-trust-value)2 Q* B1 @- s# L" ~4 t4 H
[set trust-ok true]4 W$ v+ r: R( x9 {" F1 m+ {
end- p3 T- |7 P! F1 V: S/ J
: Y0 t$ q$ ^1 ~$ U* G
to get-global-proportion
. {5 W' }. r  h% b  W7 eifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
6 J( e- i* j. c[set global-proportion 0]
. j6 D2 j. r* z/ @[let i 0
, f: z. X% R+ H; z  Flet sum-money 0# ~1 h% j5 K  w" P( u( F
while[ i < people]
' k0 f/ b& _+ O# U. Y* V! [' O[& j9 R, h. P) j' Q$ I
if( length (item i* ^: v( Q* Y7 s
[trade-record-all] of customer) > 3 )

2 s3 Q/ Z! Q. e[
5 b% O/ p5 C6 c& e7 A3 dset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
7 i: {# p4 X, m* ]9 ?]
( L' `4 P; o! @% t5 u) l, H0 ^]
4 n9 q0 C7 o. q- L9 clet j 0
0 b7 K9 E0 \* J" m; ylet note 0
4 m* ~7 V2 J  r, dwhile[ j < people]
* q5 t1 O. t" M# a. T; k[
. \! Y! D, p0 N( R! w  Q' E! }if( length (item i
2 h2 c% J! r* {, h/ d6 L2 ]) O[trade-record-all] of customer) > 3 )
+ _7 r4 R! r. f" z
[
. P7 E% Y; o- d3 k$ l5 cifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)+ d* F& F# ^# d3 m, x3 I3 I& }
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
2 C6 \1 s$ q  W  G[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
9 q: P$ Y4 B9 V1 {' z) A]- H# q$ B- ]: l* t) r  e5 U
]
  w( i) y" n6 u* _set global-proportion note
2 z1 ~/ ^* m4 i. B% E]
1 k& t& p& d2 c3 \end
( V3 {0 z/ W  m
9 _1 p% i0 y3 ^$ r: g% `to do-trade( b$ F) ]" m* y: Y/ G
;;
这个过程实际上是给双方作出评价的过程4 B4 G- D7 c2 Y' k+ ^/ R0 k% `
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价9 y1 S) T6 d; ~
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价: s. A2 `: D( d3 S* U" [
set trade-record-current lput(timer) trade-record-current
2 V. s! ~. X/ c8 ];;
评价时间, |; q6 v5 S3 n0 {
ask myself [
% P4 f0 a- j( r" v1 F9 n- Nupdate-local-reputation$ W2 {: ~( N  B0 O  {" s
set trade-record-current lput([local-reputation] of myself) trade-record-current
) G6 a/ ?% s7 o& @& t; L]5 U+ i3 _8 @+ Z0 b2 ~( z
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
0 ]) o9 M' Z2 w/ l6 a  u;;
将此次交易的记录加入到trade-record-one
8 f, Q: D5 p0 c) W# I" G/ S+ ]" G$ x4 yset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
1 m" w# X" K5 X2 i8 H, G; ylet note (item 2 trade-record-current )
1 I# a5 I6 N  R% zset trade-record-current* e& b. C5 i+ z7 {. I3 A: v
(replace-item 2 trade-record-current (item 3 trade-record-current))

7 L4 a: g2 `# w0 \set trade-record-current
1 Z5 v; V0 t9 g' t' {$ e1 D# F(replace-item 3 trade-record-current note)
, V0 M! s" t' X9 `* [. T% ^3 ~! O; L. Q2 j3 F/ X; V

2 u4 w. p3 s7 Cask customer [
! S" S7 h& d4 y/ vupdate-local-reputation
4 g; R' j+ r8 t5 [- f- a1 \set trade-record-current! E: Q. K" `7 j+ J; O
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
' K7 Y) F6 W. z
]; ?5 W. E0 A6 q' O9 ]
4 S- b! ?, ^2 t; y

0 O; A: z6 M9 s  u7 Yset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer' y' a/ q% x, a$ d7 H$ O% V

9 z0 a, Y4 g) V; M- s/ gset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))( X' E. K7 b2 S3 E/ I! X' _
;;
将此次交易的记录加入到customertrade-record-all# b, L- v* ~9 G! a5 G; k9 }0 a
end: C2 G8 `, u9 R$ S! Z4 f3 o

$ l* ]$ h0 M4 a% f! T  Nto update-local-reputation
$ W- _8 V, E" M6 bset [trade-record-one-len] of myself length [trade-record-one] of myself
% G$ U0 K- U  Z7 `& b: H* l- W5 n# |0 T6 H& n' F3 ]

/ r# l( w4 Z* q9 f* B7 J. F& k;;if [trade-record-one-len] of myself > 3

  r' a0 o: _7 aupdate-neighbor-total+ h" g! |: m4 I- e4 R+ Z
;;
更新邻居节点的数目,在此进行9 _+ S  {. j  ^" D% d* s
let i 3
% H* `9 n( ^! m& @. w5 Y# S! Vlet sum-time 0  h$ a; p! }/ Y! ^6 P
while[i < [trade-record-one-len] of myself]
) g0 x+ F0 G1 C[
3 H6 t: p' i( @5 m3 zset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
' p/ s4 s- p3 W$ \5 wset i; p- P9 l2 z/ `) m
( i + 1)

1 E/ Z1 F" ]  w7 D; B4 ?$ A. F2 r' ?]
2 Y, {2 e1 f- _9 A2 J  Z' clet j 3. j4 @* {: x% K* M4 @$ g
let sum-money 01 O  N2 V+ O) o* C9 _9 _$ Z
while[j < [trade-record-one-len] of myself]
$ A5 X- s8 j1 m' g3 \8 |" v[5 {# {& _: P$ }5 m/ u. J4 y8 |2 o
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)! u' ^6 A" X& V
set j( n. A% o1 r* w9 G! V7 x
( j + 1)

" S0 b* \( V( A1 t8 Z, X8 {$ t7 _7 @]
$ p% ?! R: L# Zlet k 3; t' ?, L' z4 Z1 f$ x% u9 J& J8 w( e
let power 0; ]; F: {$ E8 ]9 s- i/ `( E0 b" q9 S" Q
let local 0
4 X) F, U! r2 ~while [k <[trade-record-one-len] of myself]' H, G5 k) b. o: q2 i# Y) b1 m- }8 @  l
[& B$ ^# ]" O$ ~/ `1 Z. {- R( r
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)
( y9 `* J1 W5 B0 m; R3 d( ]5 `set k (k + 1)
# y5 h  Q, W  n4 E& H, _- M]8 ^& p0 m7 w# Z+ V' s
set [local-reputation] of myself (local)5 @: Z8 T; k) A
end
4 i9 K* E. u" _6 r% A4 ?) g5 q# s6 l% w$ t
to update-neighbor-total$ }& Q. O+ X& n8 \. a5 D% s* n+ c: q
0 O/ d5 C4 l, v8 |
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]# {  M: q; |% a, O2 P
8 X, [# f% L/ ^8 m* W% M- q3 M
1 C8 A  \( a) E5 Q* O* u& L7 r
end
) ]4 Z3 B' p$ D, ?' }; r! E/ H& L7 g0 \0 ^
to update-credibility-ijl
. A4 p0 F8 F1 Z0 L- }- S3 w: C
9 ^3 A) R. f6 H* P- H5 _7 I& [$ B) n;;
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。
: b* @4 {) K5 Y. d7 u+ r1 |& Llet l 0
( u0 w/ C( i0 q! A; wwhile[ l < people ]
, S2 m6 ^; x0 ?5 u! C;;
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
4 v. b; t6 w6 }- t( q[
9 v+ L2 b0 R( ^, q) s1 ]& rlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)1 `0 U2 p9 h1 B/ }
if (trade-record-one-j-l-len > 3)5 o  g$ q: |: Q% ?& u
[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
( S$ @; ]) F" G. ylet i 3! \$ ^: j2 p8 @. f, I$ a+ i
let sum-time 0
" P+ G' h- r0 ~( T7 n0 I  L1 @6 Bwhile[i < trade-record-one-len]$ k% ^) X, q( X$ G, @* D
[5 s& c7 ^& K% \& [+ i( R0 a
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
. B; ~' D1 z! xset i! E4 r0 ~0 R( N6 x9 ~' @
( i + 1)
6 r& `9 ?' D2 I: ^1 p
]
; Y# Y) F, G+ [1 _4 D9 i& hlet credibility-i-j-l 0* z$ \0 f9 u3 d2 e
;;i
评价(jjl的评价)
# L- Y# x& g- I, z* d* \% K# ulet j 3. [# \+ T! _7 I3 J  t
let k 4
( W: p4 ~5 @% Zwhile[j < trade-record-one-len]" M2 G( b7 S" i- V! |( |
[" L- m2 k6 j, u0 l2 |# P) H
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
/ i* x- O6 L& M4 D$ _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)
! }' v" F& V$ c4 @3 q5 Wset j
' X2 u5 p  V9 ?, `; p. T1 l) Y( j + 1)

% F* t; ]1 A3 v5 f]. U) J! L0 `# I) F2 [8 T0 {9 H
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 ))$ s. P6 a3 |( S3 d1 b3 r

3 L7 ?( x" f5 x4 N' u. P* F" ~

1 U- i" Y) ^; Y. Mlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))6 G9 \8 E( u. r+ Q, W  A0 x5 x$ @7 Q# `
;;
及时更新il的评价质量的评价/ u4 x: A$ ]6 A7 {1 I4 T; _
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]1 p+ k* @+ I/ O; x+ O* ^
set l (l + 1)
+ F0 d& C( x: j' k9 y]- m' W" H' j; T: b
end
0 i, i* h9 s/ b3 _, ^5 @$ T) l
/ P! u: J' I: fto update-credibility-list
( Z7 A. X3 e) F7 Dlet i 0- b7 B& Q* B3 ?: D* N
while[i < people]8 A0 P& @7 \# U* `& y. O* D/ T. `
[7 m7 U- o! [) i. X! z$ M
let j 0
0 I6 x5 x* ], Y% Y  U  llet note 0
% e. R: G* c2 n# xlet k 0( ?1 Z7 l9 J8 o8 n5 i
;;
计作出过评价的邻居节点的数目
" m2 Y, S6 M- N; x8 Iwhile[j < people]
. w- R; A- q7 C  {( N. i6 i[' w( T2 }$ N5 g5 @! j) v; @
if (item j( [credibility] of turtle (i + 1)) != -1)
3 }. Z4 }  x! X- J9 r$ ]  A;;
判断是否给本turtle的评价质量做出过评价的节点) s) \4 w& [; U) n/ n. {7 k
[set note (note + item j ([credibility]of turtle (i + 1)))3 C) Y# ?; C! C% m" c6 p6 y
;;*(exp (-(people - 2)))/(people - 2))]

( F6 _  A4 R5 U& k" @  Uset k (k + 1)
& J& u( r2 y7 _; h]
  K4 @* r+ w$ z7 [set j (j + 1)
9 e" ]( c1 ^+ D. I]0 p. \) Q$ m/ J1 s( G6 R( p
set note (note *(exp (- (1 / k)))/ k)% T& z( X7 @% j1 c6 a" S
set credibility-list (replace-item i credibility-list note)9 k& W" X, B/ t' n6 ~. z
set i (i + 1)# K8 m8 C. [. P/ V& H- S4 N" G$ e  ]
]
: [7 h& ~0 X; f6 h) n% Wend
9 S' j1 C# J2 P
  _* k" J6 d3 I, Z6 `$ Mto update-global-reputation-list
2 p- I$ p0 w5 L# r5 v. Xlet j 0
# y/ C, P7 b! R! t& Iwhile[j < people]
6 \9 L2 ~9 J2 U/ k) R[
+ S2 v/ t. h1 W. |( ulet new 0
4 D1 t" w$ z1 J  C  ?- s3 Q;;
暂存新的一个全局声誉7 u7 m/ e! x/ a: L7 L
let i 0
( f# [- O8 F. M3 A$ w- E  B" Llet sum-money 03 G( }% E7 j5 T/ e" H
let credibility-money 0
0 [% Z6 ]# J8 Ywhile [i < people]
8 I! d2 c# g% Q/ x+ g" y[
( v. V. X1 b3 i/ i9 ^# Aset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))* d. t; c  j  J! D
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
7 d( p, S/ O3 U. q) p7 w, D6 }5 Gset i (i + 1)
4 `- O0 x2 o9 @]
* Z2 q/ k# H6 L- e8 s8 ~( o' }5 Tlet k 0: O: }( I; m% n! V) N; d% \2 A3 X
let new1 0
9 f9 L7 h; w: g- nwhile [k < people]
6 n, m8 ^9 N. b+ i; Z5 S' |: }9 x3 |[$ r$ e2 g* W+ W% M3 z/ ~
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 u% Y0 B/ R% Bset k (k + 1)- ~3 ^9 W) {! ~0 m
]5 Q- u: }6 q' u% C3 d" }% J
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) & t: y; O/ G5 Q# @
set global-reputation-list (replace-item j global-reputation-list new)
5 d8 ]( g  y0 `6 {, z  T1 Jset j (j + 1)8 T5 g  t8 k; g. t: C3 L' d
]+ j4 v8 v# O: m
end# P; I, @6 h8 v) S) P/ w1 \; A
  ~. w7 L7 i( C
2 {) }9 A; v' ?- w) a/ F! g- a! \9 A
" M3 o$ ], f" y, q
to get-color
1 I4 W& A$ Q, b5 e' r$ M( X6 j, e( L0 q& Q( R. x; p, ?1 y: k& a
set color blue
" K. l6 Q/ F% b' X8 v9 ]. t
end( \7 m9 u0 Y5 i7 L5 B. h% d4 r' E
2 |1 n7 I' ^; [2 q5 t
to poll-class
, D7 q. }9 z9 B" D. Xend* U& l" ^# l, s2 H" U; C9 i' O2 \
! ?+ w: x" a( G
to setup-plot1) E  |5 {+ D; |, W2 e

4 O. c2 q! _5 |' W6 n. Wset-current-plot "Trends-of-Local-reputation"

$ X# E/ u: m: l7 Q# Z) J4 [4 Z
' {) R3 t" ]# u$ d. Jset-plot-x-range 0 xmax

8 @7 v. d- j* U. M; J1 X1 ~3 L" N6 F5 ^1 i
set-plot-y-range 0.0 ymax
- X6 t! ?# _+ F* H4 _, I
end
3 G* \3 o! |, e- i* ^) R' x! `
# S4 ^4 M, t3 l, E/ qto setup-plot2
) b8 c0 r$ {! ]( K1 H7 l! W* T5 ~$ t
set-current-plot "Trends-of-global-reputation"

' K  \6 ^5 f7 T8 v; i/ B4 z9 h* k. R7 x5 e9 r( L
set-plot-x-range 0 xmax

* h7 W9 i) Z/ Y: J$ y6 Y- h, c7 b. `, @. Z' ^* n7 v6 W
set-plot-y-range 0.0 ymax
/ j5 l* [9 r3 g/ j( N  a
end! ~; Y/ Y$ C0 O! @" _

- l2 l" v( F% uto setup-plot3
5 ?7 i6 o3 z! q. Z9 m* ~" A( A
, E' o. h) I- m! N4 J: Y9 Q8 Fset-current-plot "Trends-of-credibility"
1 [* x+ E6 `% O9 g# g
9 b" [! H) n( |8 p5 b
set-plot-x-range 0 xmax
% S/ h: R! g8 w8 k  ], n

& w1 L4 a' D0 n, d; O  e! R% e) Gset-plot-y-range 0.0 ymax

  p! K0 V% t2 Z" jend
- x% p! m) r. f# J3 `; N( t
0 U7 ~( {9 A, p6 Z! \/ |to do-plots
& N; r6 o. Z+ Bset-current-plot "Trends-of-Local-reputation"
7 H. w7 N' {+ l+ ~set-current-plot-pen "Honest service"5 j, p) i3 N# J
end' M& q7 X* K/ ^! @/ P5 J, b
2 `6 V2 G6 T% F9 i- L
[ 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.# S+ n1 Z: k0 t# t  P0 `6 |

& t9 Z+ u; K2 p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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