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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:
: U* Q" F: _& H, a. ]to do-business
. f+ I3 K2 A7 u( M* Y- w rt random 360
/ k7 K5 i/ Y) j2 @/ ? fd 14 t4 a. a! }1 c1 ~# p( N
ifelse(other turtles-here != nobody)[
* F( l; G" L4 e9 N' x) a3 G   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.+ W: f  G( k* m/ l- w" H
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    5 H! h9 o+ n+ Y* y! R  {% }
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer) L, U( x" x9 }" _) l
   set [trade-record-one-len] of self length [trade-record-one] of self
: p. {  c* f& ]8 w9 Z8 k   set trade-record-current( list (timer) (random money-upper-limit))
9 d) O* q' o4 _
+ ?7 G6 u" }/ F9 {% T问题的提示如下:
& ~' \0 S  {# k: p) Q& q5 F) `# s. s" m3 Q7 d& ], A! U, j
error while turtle 50 running OF in procedure DO-BUSINESS
" h1 H, b1 H& w, P- B, N) Q4 d  called by procedure GO  G5 {/ a; Q  H+ _8 `6 |
OF expected input to be a turtle agentset or turtle but got NOBODY instead.' t0 N, W0 b( R/ X: g2 G
(halted running of go)
8 Z& m2 x6 i: D) F. B* \
6 T" q! Z' E; C0 ~# H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~~9 ?% s& E& [. J4 U
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
0 W3 X/ |/ {7 |globals[+ U  C9 Q" D. h, c4 p
xmax
, G, t, H6 B8 z) Fymax
; B4 c/ W& F- L, [3 tglobal-reputation-list2 o( d5 J0 [1 ]0 A0 S' J- K

" T, y" V- B2 F" I0 A) e1 g;;
每一个turtle的全局声誉都存在此LIST1 |/ g6 T% d5 y4 j9 z0 J) D
credibility-list2 l3 B1 i3 n: F
;;
每一个turtle的评价可信度
8 O, S' i2 e. u% f+ Q* Nhonest-service- ~, s8 x6 X7 L! {
unhonest-service
% h( q9 Z4 a9 y+ P4 h: Doscillation
% o, B5 a3 {- {rand-dynamic
& j* B5 t/ X* K2 \- y5 q+ E]
; c7 j! t+ x6 ]1 |0 |0 |/ Q- w- ?: k& l4 E; H/ f9 A& e- M/ e( H' z- @
turtles-own[
. e8 v9 ]+ c- ~trade-record-all( X3 ?: S: @/ P+ a7 t
;;a list of lists,
trade-record-one组成
* p) ]: l8 e4 C9 ^: i; t0 [# Dtrade-record-one
0 _2 d* n2 H& k/ }0 j! p4 b;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
& `/ ^* c5 D  k$ k) l% k
- u, }+ I* g( Z8 w' S" f;;[
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]]; _. U9 A, W. a$ Z4 A5 O
trade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]3 @# p" o5 p8 m. I& J
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% n1 m8 {/ U! o: {6 l
neighbor-total
# s* l! L, T% m8 D# u8 U;;
记录该turtle的邻居节点的数目
1 G0 }, \+ V( `trade-time
1 X! w* l+ f: w- e5 H;;
当前发生交易的turtle的交易时间% q4 ?8 E6 n- @4 f/ C; N0 C+ n/ P
appraise-give1 z7 I5 b7 H0 S) W- [3 @3 H
;;
当前发生交易时给出的评价
; Q# D+ t5 w( s: r' q" m+ C8 dappraise-receive2 n# k. U2 S$ d$ v, |' k
;;
当前发生交易时收到的评价
/ `; L2 o/ j/ z  rappraise-time
; r7 V7 ]: h6 c) P5 S: n;;
当前发生交易时的评价时间
2 U) K& a* Z1 ~' [" ^  dlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉3 p- l/ P' u% J, {
trade-times-total
3 h' S+ ?3 r$ _( B: @+ C  R;;
与当前turtle的交易总次数
6 ?+ B, P9 ^+ D" k; Qtrade-money-total- R7 w7 K0 I& G4 u$ R* r& h
;;
与当前turtle的交易总金额  k$ e' J/ G4 \, z: g" {- Z0 H4 a
local-reputation  N; i+ S$ t% z
global-reputation
+ |$ Y" m4 H' R- ?: \7 P( ocredibility
$ T) O$ Y# I! |9 b2 g;;
评价可信度,每次交易后都需要更新! Y$ b* h8 S! J/ l
credibility-all- S9 v- b# S  i  E- W4 l
;;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  b* S/ C! K; D+ H. H4 W8 \0 \  e

+ h1 D' S2 o' ~7 m/ `;;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0.56 s& ~  A/ P0 {! ^2 c1 N" }
credibility-one0 Q0 b7 N1 \3 J/ i
;;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
! M+ n) o6 R/ N5 M0 B. j. Qglobal-proportion' x' t  N+ h9 D# ]3 {
customer
2 t/ z& x  g* O5 Zcustomer-no
% M0 Y8 n, d5 [. w9 p0 Y8 R: rtrust-ok9 h. A: G5 h: E
trade-record-one-len;;trade-record-one的长度
5 Q; r$ C8 `1 {6 B2 A]
" S* D9 W* r6 w
/ a7 m2 b- a! ~$ a& b& `;;setup procedure5 V' P' {1 J6 U3 O* h' S; k
, X7 l- x4 V* E
to setup/ [1 ?2 U; {+ M; Y5 P( Y
2 n0 T/ }; R, {
ca

6 F4 ?$ n  L. [( O0 C0 ?& `0 I+ m
initialize-settings
' L+ J" I9 L* C1 D/ r( y9 @

. v$ A- L; Z. i5 d3 Wcrt people [setup-turtles]
  a9 {/ U4 X" o5 D

# T. }1 u& u2 q& lreset-timer

" B; k: D% P* l3 j% M+ D, U3 C  P
: u( w( Q. ?7 r7 m& \poll-class
4 ?; w* f0 A- w* P6 l5 g
' J, A- E' ?' ^8 e6 u5 Y, o  s6 W
setup-plots
1 Y4 G$ ?" A8 w0 _9 ]  o

. Y4 Z, q% i$ z2 _- ^5 Cdo-plots

: f* C4 ^/ S1 ], c4 _  q$ s; B- ?end; [! {' m. p& U+ u" z3 u! L
; F1 @4 ^: \7 K, |9 C+ ?- H+ F/ d$ g
to initialize-settings
) @# K$ z8 R% ^! y' E! x! W" X  f% Z5 g( o
set global-reputation-list []
( {1 Z  U3 p. f' L
2 D$ ^0 w9 t+ X
set credibility-list n-values people [0.5]
" z* {. }+ V7 j) \- `, J

; O- y. i* t" r2 p1 x+ g6 wset honest-service 0
& r* y4 J4 @9 }$ D# e

: c4 W! a7 |" H, O' Z' xset unhonest-service 0

" l) A. @6 S* O# ?0 g5 O( Y
" F5 m1 C* M$ t1 w2 h# x/ Aset oscillation 0

8 p. S; _7 k# ^" ~9 R" A$ Q% Z
- [1 u3 P: a+ {: K% h' eset rand-dynamic 0
6 P% `, B: ^5 ~' g
end
9 h3 T; w* e9 m$ Q( p5 f- G* \: s1 g* W
( J& ~# j7 y1 B1 D5 u+ f) gto setup-turtles 5 S7 h/ ^. ^3 D5 I2 {
set shape "person"
" ?; J+ k$ B$ o1 J5 i7 `2 ~& m+ usetxy random-xcor random-ycor3 V$ H  s2 Y& |8 J6 J
set trade-record-one []1 [: Z, |& ]6 z6 D3 L

+ c3 u0 T2 |' `( m  o/ {set trade-record-all n-values people [(list (? + 1) 0 0)] 1 K" g, b, Q8 g8 V0 {# U+ e

( {) n& D' z$ Vset trade-record-current []9 g4 y% L/ ~0 H
set credibility-receive []6 B6 D- K: Q5 z6 r' T
set local-reputation 0.50 |9 I3 z* M# p  G1 U
set neighbor-total 0  h0 j+ H( L3 l) v, {) y6 |
set trade-times-total 0
, h5 c+ }9 B+ Z% |set trade-money-total 04 ?# j0 K6 I- O% d  D* [
set customer nobody+ f) K) c8 f3 h
set credibility-all n-values people [creat-credibility]
2 u/ s8 i! l& I  Oset credibility n-values people [-1]
6 s0 S7 v7 X' {2 A$ a3 Wget-color0 k6 n) U) m- u# R- E3 T
( m6 G" c% i! }* |; a
end
% J+ q, E6 R! V9 ]$ n8 Y( Z3 U" [9 o/ y
to-report creat-credibility
& v1 ?1 f. j. _report n-values people [0.5]
1 ~5 u9 l. E) W! f: |3 m1 Xend) d7 s4 W, q, {6 g! v* T- t2 W

; j( J4 _  t5 d) \: F8 p) P9 cto setup-plots0 ]# r6 @+ J) u% x: ?% b
1 z5 [+ G3 E) ^
set xmax 30

3 k' K7 z8 F2 |
; {* i) J, l, U3 dset ymax 1.0
  A4 \5 O' A0 U! s/ O
1 ~) e  }% C$ [
clear-all-plots
+ r! B' J8 s. [) y- \* H: p$ u9 s
- w% n' s# [% P) w, d- u- n
setup-plot1
$ N+ X; p3 b& d7 R) i
- ?7 G, m3 Q! [4 a" N( P: k) Y* W
setup-plot2
! T7 c2 P  o/ C/ B4 o+ m0 R' b4 }' \

0 v5 X: O4 y4 j) Psetup-plot3
- u: A/ C" L# x8 B' b( Q
end5 Z. ]( q9 _5 u" J7 [+ d4 I
/ m) O9 d2 v" H- d& a: J4 K' A
;;run time procedures- }7 J3 W' h+ j2 L% v8 o
! x& k) x9 X7 K+ H2 |, I( y2 ~
to go, k' [! G' Z  n: T) @1 A

! y4 J4 O% R: r/ l% A8 dask turtles [do-business]
& ]& @0 O/ g! e+ R" r$ ~5 S
end5 Q6 {+ R' S( d- P* D' j% F3 V0 n
" l3 p! }! Z/ y* i6 ~9 i7 R
to do-business
& _' ?! z$ s0 Z* \) d! ]( Z% m# S6 x
6 K) a+ d3 ^  M! L* c" R
, B4 O' o) m( z; h4 g& z( t
rt random 360
7 E  q) a: L& I' K" K! s+ }2 T, o

; O1 D3 D8 F& d1 R4 gfd 1

; d5 ]: ?  J% f  ~! f& Y/ \8 I: X! `5 x
ifelse(other turtles-here != nobody)[

- l. X+ T  q; Z) ^% A# c3 `% L' c& g' D( w/ l
set customer one-of other turtles-here

7 x1 y% S0 e- [
! G2 Z( B, b5 ]" D( R;; set [customer] of customer myself

  k9 x# n% |' {7 H4 k. z
6 q& R5 q: m& k9 |" hset [trade-record-one] of self item (([who] of customer) - 1)- H" @! m: W# H
[trade-record-all]of self) A. b* {0 {1 l# {; L& e. ?
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

0 s% L( @* i3 }8 l
7 m2 ^6 ~# _+ i- q9 c* o- a, Iset [trade-record-one] of customer item (([who] of self) - 1)% @: \( L$ e5 @: m( l( H
[trade-record-all]of customer

1 R1 G- ]: W) a) I  P( x! a
3 s0 j8 k1 K% h! Cset [trade-record-one-len] of self length [trade-record-one] of self
% V9 d. i: ?, E% i* [& W

# Z6 C" w& x8 |, q) k3 ^3 \set trade-record-current( list (timer) (random money-upper-limit))
; S8 w- U# s( a0 t, _
6 @: O7 o+ I% d& r
ask self [do-trust]5 M# P) k- I8 m" z' z! D+ @) n
;;
先求ij的信任度
1 _' a3 v6 v( ~; R
. ?9 I! u( s$ h& e# Iif ([trust-ok] of self)
: z6 y7 z$ F0 w* w6 y;;
根据ij的信任度来决定是否与j进行交易[
. O$ S) J: t, T( i! d# y& ?: dask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself4 R8 L5 I/ t$ `9 U" y$ `
2 q, t' e1 b% `6 ^4 ]
[
6 r4 n  i% L7 O9 M
& O. o* j& }1 Q/ b) J4 E) l: [
do-trade
( B8 `6 j0 `! K5 c% h% {
/ O) e* s* P0 }& S# ]6 u! \
update-credibility-ijl

# N& c% x9 L3 i: h2 c+ N  M1 ?. x$ N
update-credibility-list0 O: L; N0 g. N9 x) Z! i# v
7 y/ z- J/ j2 B' F, Y! }1 W
: d5 r# b( C7 G( V9 \9 i7 ?
update-global-reputation-list

0 W, D  C9 j' ~5 d4 t: L
, ^7 w- H, B( n/ f$ b0 m) Rpoll-class
2 A. f' U2 g( `/ v

+ U+ N0 Z/ N0 [  g9 H0 r4 ?; @) Wget-color

  w' k) T# E7 v2 N! i0 N! G2 m+ ?0 p4 R
]]
& N( |$ g: z' R8 I. G& T* c* [
/ N8 H! y# S5 h;;
如果所得的信任度满足条件,则进行交易0 \9 x) O& N7 \: b( O. G+ Q
" Z- y+ Z6 E+ H
[
! Q% Z/ Q. e% m5 R  X, _

3 P. K. u. Z6 Crt random 360

" U0 X6 P# }2 @) j4 M$ e
3 C+ j' v: o- a$ lfd 1
! q5 v/ B3 n& I

4 ?& F/ Q$ w7 M. J! X1 {]

4 U: Q  J. r: N- B  b7 |
" K% f/ T/ c* b& Bend

4 M/ E8 Q3 O, b5 O' J) h
/ ~) n1 M9 y' u1 n3 Zto do-trust
7 L  ]& D* ?/ c$ E8 R  aset trust-ok False1 g: R% @" k: E  m7 S
& V) n1 S4 n  @) |
& C1 j8 [. N% _0 t7 H7 Q( R* F" v
let max-trade-times 0# s8 J6 ^4 [8 W+ M% P" ]
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]( e# @6 d3 p6 `. }3 E2 }$ I
let max-trade-money 0" `- u8 Q' O+ |, c6 v8 _3 Q4 g
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
  P; @5 y  g* nlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))* w1 I' O( l% I  S1 k
2 U& H- t! Q. A/ F( |9 T8 ~

9 }( ~, R3 p3 a* _- rget-global-proportion& e4 t0 g3 ~2 Q+ b  m5 t
let trust-value
5 V* l" [1 k1 x9 H; |  M" I! ^/ G: mlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

( W+ a5 {1 ]/ h( J; u4 k8 ^if(trust-value > trade-trust-value)4 S1 K% b3 V9 c" E9 M7 L) }2 N
[set trust-ok true]* Y1 T: b5 a! @: M* U- }5 M/ m
end
8 o3 ~  n' X7 K! V! [9 k5 j
3 @. ~, Z# o; n9 gto get-global-proportion0 y4 }3 O+ ~( u
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)4 _0 c9 d- N4 K- W) b
[set global-proportion 0]
( _2 F  ~& O/ b[let i 0
  b2 r  Q; J2 k$ m) Plet sum-money 0# x8 e9 T" o1 ?
while[ i < people]
: I) c! d3 N, D) H& G5 h) i[
. y8 F2 N- x6 [% N7 l- ^- Aif( length (item i. U& c8 r  v# V- n3 T. b" v
[trade-record-all] of customer) > 3 )

  P. `/ J' k- ]2 q" A4 N[
  S- ]4 g, D5 G+ ^. [set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
% d' @1 m6 U! r, d% z]
- w) o  {# V) l) A9 @1 G]  u# P' _$ |2 `. _& U
let j 01 `* x3 [" Q$ n6 t
let note 0% X8 b) A# s$ z2 {- j7 z1 C- N6 B
while[ j < people]7 c: f7 ~: _  @  J- O3 T
[; L- P. X: O) H8 d& H/ [8 W( H
if( length (item i( j' U/ H; t) n3 _" U5 B
[trade-record-all] of customer) > 3 )

% k: X9 m/ v: h% i0 z: s[
7 K8 Y* f5 W1 |, vifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
8 y; V7 k% u9 ~6 B( g, Z[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
# n2 O- d# B0 O  L& I[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)], H  g+ @" S6 j
]
. T* ]2 ]8 v$ c+ Y$ P3 E]
! ^2 {3 A1 c, r7 fset global-proportion note
6 t( y$ b9 k) x8 L1 j$ f1 ]]
; U7 j, [7 e3 S  ]. jend! Z5 }8 m9 f0 j, |/ a- w) T5 o
7 p8 I' L# w" F
to do-trade+ U/ U. E$ e5 C
;;
这个过程实际上是给双方作出评价的过程, x. d. C! c! i( a- @4 V
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
; G# G! R& k* v3 Y: xset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价& t5 m( j1 v! h
set trade-record-current lput(timer) trade-record-current
! |+ I, N6 ], I  a; R7 F! S% H$ G5 }/ t;;
评价时间) z. V2 w& j6 [) B2 w
ask myself [
; G1 K# Y. h# c, Lupdate-local-reputation
( w9 X) i* E& ?( Q; i" p! P2 Kset trade-record-current lput([local-reputation] of myself) trade-record-current# y( v( `' x/ E2 y
]) i- }, R( p: x# c: ~# L1 ]
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself) M' r& n; Z* {. g) ^: i3 _
;;
将此次交易的记录加入到trade-record-one" w: X; b8 V. A7 ?: u  r8 o
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)) a* D6 W. b6 n/ H7 l5 L! M
let note (item 2 trade-record-current )
6 f6 _( D- R; f" |  c9 mset trade-record-current
$ |$ Y* n% e( m- d(replace-item 2 trade-record-current (item 3 trade-record-current))

4 _( y- J1 Q/ |  Z5 b8 [8 X  S* bset trade-record-current. W* s5 W; a. r* Z' {* [
(replace-item 3 trade-record-current note)2 Y- g! ?, H! N4 c3 M! i( D

* f$ t0 R% _9 f8 Y" w
" ]0 ^8 f' V7 ~! {
ask customer [: Q; U2 U8 c( t' \4 `
update-local-reputation2 b8 @8 a/ a! U# n
set trade-record-current
! `) b& E! v% S" z# F3 _; I! N(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
" b& x8 j2 f9 v6 ~0 M0 a3 Y1 _
]  z0 Q4 D; N2 p0 i# F0 p
  ~1 u6 _! ]5 c  E
; Q2 Y# f/ P; j0 g
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer( d! n6 Y( ~5 V4 M: V7 l& g7 n- I

+ C& I9 a, _1 e( eset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))" ~  ~) S( W; o+ |& }% g6 r
;;
将此次交易的记录加入到customertrade-record-all
% X( z& [) }5 L) P5 B4 r* Dend/ w9 Q/ P  I# e2 O; f
& R% \: K6 I2 F& u; o5 y- ^. M, a
to update-local-reputation
5 O2 X- `, c4 o5 b. Bset [trade-record-one-len] of myself length [trade-record-one] of myself5 m( q2 ~1 w% @  w; F8 }$ i: S
6 W$ Q4 V' z, }1 s( d" z) J. P1 a- y" a

$ K$ {% y; F( J7 N+ k& Y8 n; m' _;;if [trade-record-one-len] of myself > 3

3 f8 R6 E& ]- E4 oupdate-neighbor-total6 n4 _, d6 I; N- r  s7 {' L
;;
更新邻居节点的数目,在此进行* o5 F& K" d5 U
let i 30 L  D$ V4 G8 U: K5 O* V2 R5 {. k+ |
let sum-time 0
! A& F8 r, p; h8 ?0 Zwhile[i < [trade-record-one-len] of myself]
5 L4 `/ `- h" w[
8 J5 H: I% I) ~% v6 o) Hset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
$ Y5 ^3 l# F. w; N" `3 l- c6 Dset i
- A5 A9 j" k& ^7 e6 L" l! W; O. A* B# F( i + 1)
0 f4 h$ B2 e0 v3 ]" m5 G; N
]
+ u5 x3 ?6 h9 W  F  vlet j 3
6 b# U( E6 t( E6 m2 Xlet sum-money 05 H4 ~  u* p8 i" m0 v
while[j < [trade-record-one-len] of myself]7 R3 ~5 l/ n+ F1 q8 h9 p
[
( x5 h! h1 H# _( x9 E2 A: Yset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
* ?: v1 x. G, T+ ?$ }6 X# @set j) b4 C& }2 e& m, k9 b; M+ L# D
( j + 1)
7 d$ A& i' b" h3 Q4 b* e7 G
]
* G, j- c9 N4 Y% G. R4 ?8 J6 elet k 3. ^5 B( t& ^' Y0 j
let power 0
% Y# u9 g+ J4 T/ ~let local 0
( N" c+ W0 n# B' Pwhile [k <[trade-record-one-len] of myself]) V) \" b$ }" o3 O' H
[4 W/ m* {' W8 n5 ~8 g7 {
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) - E% w6 A( |5 }4 x
set k (k + 1)
% ]$ U7 }+ d. C3 X  P. `- z# T]
7 h9 W; w: D# w. ]$ g6 {set [local-reputation] of myself (local)
0 w2 y. l( F9 x# Iend* O5 l4 d/ Q3 ?3 J) [

5 [% x6 {, |9 n& A& g& ]% pto update-neighbor-total. I! z, o1 A# n4 e
5 h9 {3 W2 N$ {3 J/ V+ W) x
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ], d# x1 `, L" y7 O+ m$ k
- L3 f& r+ z4 v, O; O5 g$ [) ?
6 j+ n$ J! w1 n
end% R$ E; K! Q5 t% l2 K2 L' V, Y
& o; x* }" o  D5 ~5 O( X; E
to update-credibility-ijl
4 K% m3 t- g, o' k7 W* p# w" o& C$ z2 g, `& a4 ~
;;
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。
4 _! w" \/ R& m. g/ Xlet l 0
- A* q  d8 n+ k) lwhile[ l < people ]/ z2 g8 \! p) f# M4 B# v
;;
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& Z6 Q9 t2 U( l: e$ {
[* U; R% N8 w$ u7 q' w  p0 ?$ B! C1 I
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
" f* N0 {0 M; o& hif (trade-record-one-j-l-len > 3)+ o' \* |2 \) A5 M' G
[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
0 X0 l) V6 d; h* }# S; n4 wlet i 3
9 C  }% P" e( m- v2 U: H9 Ilet sum-time 0
' f* I. ?" B2 s+ |# nwhile[i < trade-record-one-len]' d8 I6 U" ]- k9 g9 P
[
6 [. |0 f$ O  G: h! m& V' {; Bset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
# Y5 p: P8 X0 C5 R0 L5 g0 Cset i
. p( K6 s& Y' s3 A( R- H( i + 1)
! J8 d0 _1 K. J4 D8 S
]; F1 [: }3 Y! {
let credibility-i-j-l 0# I5 {5 c* {4 M% |: v6 O. W& K$ g, Z
;;i
评价(jjl的评价)
9 K+ ?# v! ~; z9 i1 Slet j 3
8 K- Z) d9 c) ]5 olet k 4( y: d/ M* q( u% A5 x0 B
while[j < trade-record-one-len]- z) _3 T9 p7 G) l7 }
[
. \2 v7 V) s: v2 O% Xwhile [((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4 a3 T$ }; \1 P2 F7 h. O
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)# u1 L. u9 R8 ]2 J5 [' b
set j7 K% S: a( o! W
( j + 1)

5 i; q/ p" @; e. X7 p6 t9 ~/ H' U0 x2 y]( F, B# |1 h* ~+ u+ x- c
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 ))
- R$ q8 v( U* @: O" e' B
: b; ]/ ]; U( n  A$ A' n  S8 p8 ]
- A6 D6 }# h5 E  z4 }
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)); v$ m$ H8 P5 Z! @! Z
;;
及时更新il的评价质量的评价4 ]. W# h! j/ s* S6 E8 H; t( ~% ?9 g
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
  @9 O% t" N( T7 _' @2 J& Pset l (l + 1)
: r5 j% N& B* S9 o]3 [3 L9 S5 ~6 g  o0 s
end
9 Q& H! m" J2 F
" n' R3 A' d3 p  Jto update-credibility-list
: e. z5 ~0 O, B7 s3 S* J5 Slet i 04 k  [/ A2 W6 K
while[i < people]
: k4 Z7 M5 ~- F0 _- o& R  X[
& z3 v- N" y3 A1 a/ xlet j 0
( ~% K* Z) D. S0 z5 B6 Glet note 0
+ F) K6 a# x# }( r1 ], x8 J4 nlet k 0
, R' A. F% E( o7 V;;
计作出过评价的邻居节点的数目8 c5 \4 K' N: f) r
while[j < people]. ^# |# f  a5 u  j/ P* f
[
  |8 j- j0 |8 X9 n5 a! O! X* J2 Qif (item j( [credibility] of turtle (i + 1)) != -1)) x+ l# u8 }/ y' R$ ]+ I/ Z
;;
判断是否给本turtle的评价质量做出过评价的节点. S7 G! M: P0 j* O8 ?2 R
[set note (note + item j ([credibility]of turtle (i + 1)))" F0 F. |& R2 M( m. _) a8 C6 r# P
;;*(exp (-(people - 2)))/(people - 2))]
/ R' E4 i; W3 E7 J
set k (k + 1)
- b3 Z  b6 Q" f# R0 h]4 |5 m' v7 `; {4 d
set j (j + 1)) {9 V# F. X' A/ V; D5 {! V' a
]- Y8 V, n0 p, p, _' ^- p2 Y
set note (note *(exp (- (1 / k)))/ k)
* }# V" s# b; L. F& R; D( P, vset credibility-list (replace-item i credibility-list note)
% l, h' V9 E1 T! \set i (i + 1): E0 m3 W* R: V1 ^
]) E. T# X* I3 `# `/ k; R
end
% ^" J+ O9 c1 U# w, |7 Y3 t9 n- K
to update-global-reputation-list& M# u, ]2 f) p0 Z8 p
let j 00 }+ D$ T  x3 z5 G1 x# L# ?
while[j < people]
2 G! X' b- }% s. z& Z. h[
- @4 }! L/ R5 }let new 08 _2 @) p) m1 Z3 ?0 F2 J
;;
暂存新的一个全局声誉! @! }: Q) j+ q% Y0 U7 R
let i 0
! N- E+ L- c, K; n( X) ?- @let sum-money 0
: U% |) ]$ o0 }- g# m+ Q6 jlet credibility-money 0* N5 |- f, w4 q$ ~+ W
while [i < people], D9 [: }- L" v6 w9 \
[
5 p0 m) q+ A8 yset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))! p: g* D- t- j6 x: f
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
9 Q, P1 w% t- x" }/ ?' {set i (i + 1)
* `5 }0 l+ ?; H* r2 j]8 c) L  k2 i- v  W; V. L
let k 0$ {( C3 R* _: d+ c4 f. N  {- ^
let new1 0
; h/ {% n1 u. r, _3 v5 \% n# j8 _: owhile [k < people]+ }. Y) T: w# |
[
$ j8 t3 \+ l$ ^+ k- Q( C0 gset 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)
/ [  k+ N, F0 @3 o) rset k (k + 1)
" e. E/ Q1 x7 w; D]
7 A; d) w2 A, A1 |, ?set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
! k! r; b, U' x6 Q/ }2 S+ [( pset global-reputation-list (replace-item j global-reputation-list new)( k% D+ Z5 e9 i' K; |4 @
set j (j + 1)3 J" {8 T0 F6 r; I; T5 N: L
]
' o) [9 g* M& J: [; k7 V8 cend: k* Q4 \' `, L; G  \
2 _3 R" G. c1 \4 D' x9 f8 @- y1 c
# l- m6 m4 n% l# W8 o

4 c+ Z- @0 N$ e' ^to get-color$ G: g& Q% o1 x  y& G5 [$ S+ g( E9 t

% N8 W2 G" C! L5 d0 Bset color blue

+ |0 @, ?9 t. T4 N8 X+ ^4 t  Lend
# u8 Y8 j5 j+ v( W
: Q  ^1 T- W# x+ i6 [to poll-class
4 O' |% x5 b& h2 E) u) Z9 fend6 d% M; r) D4 m/ ^; a) |' B
: B* x' E0 Q; l" c1 z
to setup-plot1! M. v  U, ~' n# T! v

9 v8 M/ |$ X- y4 [: c8 ?! Lset-current-plot "Trends-of-Local-reputation"

8 m  f6 |5 X) u0 ]8 b, e4 K" ~% }
% f  @9 u4 R  w( @5 I9 R9 Lset-plot-x-range 0 xmax
" r6 e- y8 n' D- E* b# z8 p3 J
$ B$ h8 ]/ J" y
set-plot-y-range 0.0 ymax

; d/ I# Q2 Z$ m$ P& R$ n- @end
3 A; y4 k/ @, {5 @  H$ A6 a8 }0 M( |  B& H; E1 h
to setup-plot2
& ~8 a; }) O! ~* b2 Z9 j( C: Y
' _; m$ F5 Y/ l) q6 T5 M% p, B: `set-current-plot "Trends-of-global-reputation"
5 ?; ?, ~5 H3 ^+ s6 Y

' l: h7 @. A. w  I8 lset-plot-x-range 0 xmax
$ F) {4 U% V8 S: p

* o+ n! G$ _7 {0 uset-plot-y-range 0.0 ymax

2 a! o9 x4 H- u! Aend
" s9 h0 n! Y7 i9 K- \3 j4 B
8 E% |# r+ u7 c/ u: Eto setup-plot3
9 x! ^7 H; z* b/ h: d+ e2 b- G  d* Z$ j6 J+ s  q# H
set-current-plot "Trends-of-credibility"
) ^2 c3 r2 V$ Z; Y/ e

/ J* Q7 H2 e. P- hset-plot-x-range 0 xmax
9 f. z' I- p  M* h4 d* l) h& o. T

; q. C1 \) }- B- Bset-plot-y-range 0.0 ymax

0 @: G, j  n+ X3 F% I  Pend( S8 Q: t2 g8 M, F8 _: w( ]- e
0 N/ @* J7 h: }$ Q% X+ I4 a
to do-plots
3 K/ U1 l" G- S! N* K; h  Lset-current-plot "Trends-of-Local-reputation"
& u, k  }. O( c7 C7 Z, X1 Fset-current-plot-pen "Honest service"
0 M! \5 W. ]' b4 y2 Send
# q- {3 H! ^: N+ F6 k2 p* B
, I$ T( Z6 h' F+ D6 S7 H[ 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 z/ s5 \4 R; j2 t0 X( k" X, H4 z# F
  J. [* W9 N6 e& [! d' _, 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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