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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:1 o4 c, ?+ _+ T
to do-business
7 n8 u3 Q. P7 `% `. g rt random 360# J0 K2 Q$ n/ v/ _* @
fd 17 L% m) _! C, Y3 Z& F
ifelse(other turtles-here != nobody)[0 r9 @$ Z4 a& I8 h4 q9 s# Z8 ^. M
   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+ v2 n, v3 ]' X' T9 L   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    " \, d$ d, }$ x( A4 L
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer% s: [, o5 O2 r7 @; ]: V! W
   set [trade-record-one-len] of self length [trade-record-one] of self
7 o! ?; h8 g' A   set trade-record-current( list (timer) (random money-upper-limit))0 M3 w# |$ i) J1 t3 H7 t; P8 B
" b" e# c4 P5 v" u1 J
问题的提示如下:
& J" ?% Q) h: B  F0 [
; w7 F6 E. {, V/ t/ d6 aerror while turtle 50 running OF in procedure DO-BUSINESS5 A+ R' C# B  _& W1 @) ]& |0 ?: Y  v8 J
  called by procedure GO
' h% R- T1 [- j% S* gOF expected input to be a turtle agentset or turtle but got NOBODY instead.
# t- b- O+ y, }6 W5 h% A
(halted running of go)5 ^! B, E% }. {( V% w9 H

$ H2 s, ]* O# [- h( Y" W( [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 q0 O9 B. ^" ~3 O0 Q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
4 [" \+ J6 y0 C( y; K3 Y' Tglobals[
" N( ~- l# ?% j, a! ^xmax$ b8 E2 p( ]/ s, w5 G6 r7 D+ @
ymax3 x0 Y6 X4 V" l! C8 T
global-reputation-list, V6 e' o( J# ^( P) E$ L
' K* F% c( Z+ j3 D+ @
;;
每一个turtle的全局声誉都存在此LIST
' B6 c" _; W- y0 f' L1 x- fcredibility-list
7 ^9 q3 E2 c9 I; a/ O$ P" r; J- X;;
每一个turtle的评价可信度
: K9 ^8 o6 p/ }4 [4 N& k: D1 s3 Xhonest-service
: E: }- U2 k3 }6 N5 L7 T- \$ @4 ~unhonest-service
, l3 N% Z3 ?# u& l0 ]oscillation
# c" X( ]- u- l; v% Q  z5 _rand-dynamic  ^: h3 _1 A* e: O% `( A
]# z9 _; b" S% J5 h

, W2 l' f2 U' o) Z$ P, K- K6 ]turtles-own[
: B$ k, X" ^3 V4 k$ D: ntrade-record-all
0 B: s6 n6 _8 p3 j: d' ^;;a list of lists,
trade-record-one组成
2 T8 m% D5 r4 w" e# m3 ~, `' Q! mtrade-record-one
+ ?- `# a5 P# E" U4 C;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录9 C0 e3 h% T5 b+ a6 a

* _* r/ N. C0 F) O;;[
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]]1 X8 m4 b6 k4 K& a' e+ U
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 {# ?! |7 l; [  F3 Gcredibility-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
) V/ v5 c5 }4 q3 pneighbor-total
  H. I+ J/ k$ g) i- ~9 ]0 P) E) P;;
记录该turtle的邻居节点的数目3 k+ W" `, f. p  `6 \
trade-time1 X7 E6 q& }! B% a" u5 ?( f  b. D7 U
;;
当前发生交易的turtle的交易时间# e: e, q# z+ s
appraise-give- G+ W/ a4 i% K- _6 z
;;
当前发生交易时给出的评价( V4 W' m3 j2 ?; X6 X* k
appraise-receive
8 k4 U. t/ x! Y! M+ u6 [" O;;
当前发生交易时收到的评价2 ~% Y8 J1 r% w% p$ {% G! R
appraise-time3 S: b0 W; [( a" r' b5 U
;;
当前发生交易时的评价时间
7 Y, [- A$ g0 _/ X- b( ]local-reputation-now;;此次交易后相对于对方turtle的局部声誉1 M  P+ ?8 I) @. k
trade-times-total& l  |1 \& x+ z
;;
与当前turtle的交易总次数' E& c! w) ?- t+ m2 J3 s; |
trade-money-total
' v2 Y0 L7 _8 H1 ^1 D( a; };;
与当前turtle的交易总金额
, j" m$ k; o4 `7 ^local-reputation
# i( L  I3 U3 n; E! qglobal-reputation' C3 W& W5 P7 C  n1 f+ V% q
credibility
/ A$ F- L- E- v;;
评价可信度,每次交易后都需要更新  ~/ Y( f# a7 J
credibility-all
% x# h# S- ]% B6 H3 ~4 `;;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. @& v; ?" T5 [1 j* ]

: O5 ], R. f/ c6 ?, A/ g3 L& G* b;;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
% ~8 B7 b. l1 x$ s$ m5 u2 Rcredibility-one3 W0 m$ X: u) b, U
;;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
: i5 _5 g, \. |7 p# R# s( rglobal-proportion0 f1 m4 ]2 p2 C1 K
customer
9 H9 |9 }( \3 W. F- x' Q- k! u: tcustomer-no  e- h- w# _' f
trust-ok
# o$ t# ]( o% \- t, B$ _+ r3 otrade-record-one-len;;trade-record-one的长度6 Z7 Q+ J! V: g- T2 p$ A1 h% `
]8 ^9 z, t0 H- t! }6 r+ k

7 s' u8 H! i# a* b& B;;setup procedure
3 a. S. y8 J, {# i, z3 \& h7 c; e$ _. _/ r
to setup  p1 a. ]4 t9 {5 ~" D
( ^- K* g' c2 r; o* u8 V
ca

; x2 n2 A: J1 t/ ~  _: ~* t. N# L# D% ]2 S  H
initialize-settings

2 `/ T+ c4 J, o$ C6 M. ~0 Q. H2 W' V/ _2 v2 j7 e
crt people [setup-turtles]

. s* t6 F0 b# U- `% U- R5 }9 p! U: w  {4 a' J- O4 K
reset-timer

2 Z& t8 A5 E, c  R4 h
7 S* ], r. u) b' W1 Bpoll-class
- N# [4 _( [8 L  a, b& c6 z$ x% H. K. h

0 u( O  f+ h8 D6 `7 b5 G  xsetup-plots
& h$ U2 H  C9 {9 H% X

0 I6 ~' e" C+ P* S; Pdo-plots

7 A0 Z: p9 C( S* Fend
9 W' j7 g! R$ @2 @' F  W5 M
. a$ k9 y% I( r& Sto initialize-settings: U" z' |, p1 s) l+ B3 ~; l

! @2 D3 F: M9 ]' N2 ]  [! Yset global-reputation-list []
% w  p5 a) K5 O5 N0 t6 y
( K& Y8 ?' i: u$ |
set credibility-list n-values people [0.5]

# p# e2 G( ?( o3 T/ n1 S. Z; z# y, o
set honest-service 0
' |( q; o! b' z. b; s! v- S

5 b; P9 H5 o; x% ?9 X( k* ?set unhonest-service 0
4 w& S" b- p5 h( K$ g

# B6 A) u3 Y$ ^; ^! ^7 F' |. x6 aset oscillation 0
& `5 f. R+ o' d, E7 E& l

2 Y" \5 A; D2 L) A3 c  Pset rand-dynamic 0
% c9 w( ?& Q1 ^: \$ |! ?/ R( X
end
% L7 L0 t# `& N/ m: U% a# x
: O8 X# _: i+ X- W. {  kto setup-turtles
" Q$ \+ b9 |$ G0 F4 nset shape "person"
5 d" y( P! e: osetxy random-xcor random-ycor1 E( p9 l+ P# f7 w  E; P* ?. R
set trade-record-one []& d2 B0 x/ P5 P
$ U4 e6 g2 N2 ]: J- d- Q
set trade-record-all n-values people [(list (? + 1) 0 0)] : Q$ k9 t  [, R$ y% S
9 M7 T# U  ~; k; O( \
set trade-record-current []
/ Y. O4 m0 l: f% y# l, {set credibility-receive []8 m) P+ z+ t) f5 R* M* e) U
set local-reputation 0.5( |) M0 W) A$ c& P8 Y& G8 P$ K
set neighbor-total 0
+ S( I3 r7 Z- C# q3 ~+ J# xset trade-times-total 02 l. H* D# M. C$ Y5 J
set trade-money-total 0
0 j+ d4 `+ ~* Z2 D3 aset customer nobody( L9 L( }" X- s. @+ G: A
set credibility-all n-values people [creat-credibility]
! q0 I! H1 `8 R' w: m( e$ H* H. `set credibility n-values people [-1]
& I8 i) w; p  ~0 F) d" ]2 ]get-color! F. r/ Q+ f! {4 S# o
, K4 A3 X3 W- K% b1 J
end. Y0 N* a" R1 C) \  w) D
( e- U5 x, t+ h! c$ r$ Z
to-report creat-credibility
8 R  m, z/ F3 r1 ~6 creport n-values people [0.5]# M' C1 |9 h7 W3 W! [
end1 O; Q5 V5 B1 f* a
5 l% i- \4 @6 s  T
to setup-plots
2 O; `6 v) M1 f( F& t- c
: u) w) X( L: ~' Q' s. ^set xmax 30

. e2 i$ D6 b! h5 V" C" i. w$ r0 H$ W5 N" T
set ymax 1.0

  y9 I/ d; I" d! Q- B7 v4 r6 P# I: {5 n
clear-all-plots

# z9 T: m" q! e  g. S+ V% \0 J; k# i6 j( A9 _
setup-plot1
! C, g  J: V  I; g& V

) U4 b* c5 w+ {: Z* qsetup-plot2
* I  }1 C& ]( D/ V1 A: L
4 n: \1 N+ D4 O- U4 a
setup-plot3

; d$ m: \# n2 {end
9 E# L' C) ^: S4 i; A3 B7 \" Q3 O
3 R5 o7 S) k  V/ x;;run time procedures
/ O; O5 Z5 k5 T6 T: ?
: a1 x6 f+ V+ x, b5 Ato go, `) @, _% _7 T/ j  p/ Q

$ _& Z1 h, K7 E' Z! q; Oask turtles [do-business]

) {0 V, y6 l; ~/ d; `end
) X! {: a0 n1 P6 `7 q3 Y
; T* j+ [. s1 U4 s/ [" uto do-business 1 v7 @# K0 M; W6 w# B6 ?

; Y5 Q! P. [, [: P$ y, W- d) D! S9 K0 Z( H# [+ z9 P0 i0 x% l
rt random 360

$ x" m- O( }: d/ t, [
) H1 V' e* E1 ~' _0 l% Afd 1
: a; N& M) F7 ]

5 \! s: V5 d! O" j& B5 _; Qifelse(other turtles-here != nobody)[
9 s7 i  H) o! N" U

7 V7 X8 [8 S+ S, N$ K  Rset customer one-of other turtles-here

. G  ^' i# r# {- p  N& Q" P6 V6 x# V% P# i) q) p6 J
;; set [customer] of customer myself
" `2 a& g& \+ ~, _3 d% J! q. J
, ]/ h! G$ ^& q" v8 r+ l- T+ U1 l
set [trade-record-one] of self item (([who] of customer) - 1)
* q! |, J  C$ S/ o% u  }[trade-record-all]of self
# w3 G* U* ~! c0 a: E;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
% l% a$ q% M3 }5 @

" H; |1 m  C9 H/ `set [trade-record-one] of customer item (([who] of self) - 1); m0 U* U7 u% X) _
[trade-record-all]of customer
, K/ U2 J, `9 P* i' j' y$ I

7 \6 C, T, c2 {/ u0 @2 R) l" lset [trade-record-one-len] of self length [trade-record-one] of self

/ n/ q! N9 n2 J, [) s' \  T8 ], p: G1 b
set trade-record-current( list (timer) (random money-upper-limit))

( h% z8 b5 P/ S8 k! p6 J! _. c* j. j+ ]1 }* o; u
ask self [do-trust]( }+ i% r3 z) W& v# b  i
;;
先求ij的信任度  z" c% s! A& }8 J
1 B& ?! }$ D- F$ V9 v
if ([trust-ok] of self)
( y8 s# ^, W0 o% U1 J) Y+ w* A- x;;
根据ij的信任度来决定是否与j进行交易[% p- ]% c+ V8 j" v+ N2 b
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
' ^' x, [. x$ g) L; n& ~" v7 v; J- K
[
1 S, S/ g! P0 y2 Q1 y+ E
; m- l5 E  z4 y/ M
do-trade
( o+ T7 H. [! L( y2 L" ?
& h( Y9 z7 c: k4 `: \! E4 K
update-credibility-ijl

0 c" k- ]1 Z# X3 t8 N3 l
9 @  @4 }6 C3 _- E$ ]/ i# T3 B1 Dupdate-credibility-list1 x3 Q* ^& k/ P- U
' y9 h9 _# T- ]+ O" [

) {" a' o8 M! e+ Mupdate-global-reputation-list

, O& p: ?& e. {6 y3 [. n" R8 z$ c' r
8 [  Y6 I, s$ X6 e. vpoll-class
9 b" q' T4 U/ i2 y; _

% L. c3 M' r, p' t' zget-color
1 |5 z8 W# w& f* \

/ U8 ]" _8 v: f8 C1 z, L  i]]
7 i( Y- }# E8 ^7 k4 `/ q# s% l+ L; [, I# `; s; U
;;
如果所得的信任度满足条件,则进行交易
* e, ?: b) v& V8 j: r6 v( r7 L1 W# X5 ^1 R7 z0 V. Y2 P
[

* g  H: [) t; W  c2 a. _3 [& t/ t* D* r0 J( l
rt random 360
$ h) j2 `4 J, b. U: v' u- y
# N* x* `5 K8 m8 r' q8 E
fd 1
+ x. [- j8 Y; h! {( N
+ ]- k/ i# C3 x" R$ U0 N( Q
]
* i) v, Q# C& L; ^4 X3 S2 s7 v
2 r' J( ~# ]* `6 j) l! C( D
end
+ C6 P" L- f  i  E4 U6 Z

) F  L& V, n3 t* j; zto do-trust : S! u' N) C( \& G
set trust-ok False
0 L& }7 O; v! r( d( p1 y8 t& h, i/ w

) b& |, p# y' a- Z+ ~let max-trade-times 0
2 \, l& T% ]& v% _/ K- ~, zforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]# O% N' F- `' C. G$ e
let max-trade-money 0! D9 W& j1 u& I5 {6 |
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]7 J! D) U2 _' z8 V% n- D
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))* D8 x3 u; E" i: N( f$ l/ a; A

/ ]% t3 C) B- h& C) f5 O

! i; R( \7 R8 S% i! d( C. {+ N. aget-global-proportion6 r2 P; ^& Z6 x' u$ B8 b
let trust-value
4 \5 ?% _7 w" zlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
8 e! n! m, ~" Y% [6 z4 o
if(trust-value > trade-trust-value)
* A& U& f; z. |% k[set trust-ok true]5 \, C0 G7 S5 G+ J
end  ]+ _* E4 b- G) n

" {( G: L7 n) ]1 r9 _3 hto get-global-proportion
. w6 }$ M, i2 k+ [5 K3 lifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
1 r! w4 g  o: t9 t8 [4 e% \[set global-proportion 0]. H1 B: l& L- [+ S% F+ x
[let i 0" V7 K6 R1 h8 A# S( m
let sum-money 03 W  P6 o( m5 C0 g
while[ i < people]
, F3 K  l1 J- L* s[. d4 {, d1 v2 r% @
if( length (item i" x5 W+ b( P9 D; Q- w6 R. i
[trade-record-all] of customer) > 3 )
; g: |+ _$ @7 p4 `/ p
[/ e  \( Z( V# Y& e
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
+ C: c, P! H- c2 j7 a/ _]
) ^3 A. \4 r$ i* w1 y6 H]
8 g- v1 S; _% |$ blet j 0
( E! r' D& E, flet note 0; O- l) O' }( @4 P
while[ j < people]& R: a# h0 ?' R3 W
[. C4 p5 E8 a; ?8 \+ j, W' n. {
if( length (item i+ M. s; O& [+ _3 o# P  X: ^2 r
[trade-record-all] of customer) > 3 )
; |8 A' b# j5 G/ A! l7 J
[- E, b, c; h( `
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)5 ?; U' \3 u) v  O
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]3 U( Z* |1 ?9 b% D' e; C
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
1 K% k$ L7 V1 T6 W$ B. _: a. V]
2 l3 A6 {) ]  b7 g1 E8 p: f]
2 t& b' e- X0 e: U; {set global-proportion note' G7 b! D/ ]2 q) f& o& o
]
# a" x" [: u, D$ }' o/ k) Nend
1 ~1 O. }7 ]$ ~. K# Y1 y9 j# r7 X  ?0 u# v7 B: O. D  \& C- v( z5 Q' l
to do-trade/ V1 J1 J; c; y0 q8 e
;;
这个过程实际上是给双方作出评价的过程+ |& q8 K7 ?, q0 Q) F
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价, m- L3 K! P# u3 Y; Y
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价/ s" k1 `9 ]* \4 I) e7 ^& J3 z' H
set trade-record-current lput(timer) trade-record-current
' h0 o1 E& S" F# n5 f1 M& Y6 C;;
评价时间
3 ~5 f3 c$ f/ C: ?1 P. uask myself [
: z$ l& U& Q8 Cupdate-local-reputation
2 @- d; r9 M. ]6 G) eset trade-record-current lput([local-reputation] of myself) trade-record-current
, K8 |, p, M: Q7 R- c]# \8 [7 h9 V1 G6 ?& @, t3 x* q7 e
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
0 ]6 x. `. }% X;;
将此次交易的记录加入到trade-record-one
' q% ]8 r: U3 X3 u( cset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
; J* {# C5 L% D0 P. U2 H: w& j4 flet note (item 2 trade-record-current )
  c  P" w2 O. o% P; P6 Aset trade-record-current
5 i/ b( O! m. U- \(replace-item 2 trade-record-current (item 3 trade-record-current))

- n4 a- h' P4 E/ b. Bset trade-record-current4 G  v2 b* ?' R& u; M2 A& M) s
(replace-item 3 trade-record-current note)
0 n% n+ M; r6 w. D, U1 }& l% y
  z7 C7 F6 w2 t
9 {" P9 x& X9 i$ L6 ]& n1 U5 q
ask customer [
" W; l  y% ~  ]1 ~update-local-reputation
6 \9 x1 K: N8 _4 I4 uset trade-record-current5 b/ K5 j0 z! H9 N2 X
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

- B2 Q& z9 w6 }( D]) m- S; E( l6 U0 c# E6 @2 x1 Y

' P: Y  ]% V: \) j) S

! A# E6 l& p1 u+ q; D2 {set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer/ j: q& Q! i0 K6 n; I

7 E' E" v* V1 \- hset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))# p7 C4 I+ P; d1 K1 x- M7 B
;;
将此次交易的记录加入到customertrade-record-all
# T2 G4 |9 s1 u9 Bend
5 }0 R- G9 w- ?' V% @6 x; g- F- i" x. W: Q0 I. i% v
to update-local-reputation
$ S8 l& O6 ^1 @3 Rset [trade-record-one-len] of myself length [trade-record-one] of myself
* f4 X4 N2 A2 Q, ^; W( d+ z! o' k+ ]" P' Q6 F4 ?' |5 I

! h4 L  e9 w9 {, J2 W( s, i3 H3 D;;if [trade-record-one-len] of myself > 3

1 G4 j0 @/ ^/ I4 Gupdate-neighbor-total
3 G- W' o+ x4 D, Z" g0 r/ L;;
更新邻居节点的数目,在此进行2 }9 S5 j) h" h
let i 33 }; D& Z7 b9 X" x
let sum-time 03 H6 N- ]0 J( a: n% |, I
while[i < [trade-record-one-len] of myself]5 ^/ h2 F" K1 s4 `. L
[
9 t/ w0 X) l5 b2 Gset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
# G) Z; p4 V  A! P/ w2 N* }set i4 F$ K7 @) j) l$ B' G' s# {- L. Z2 N
( i + 1)

' e- p2 V3 z1 Z" {6 Y( }  s) z]
  r) t& [- G$ r8 wlet j 3
. f1 k0 U# a7 T1 ]" T; n! f* ulet sum-money 0
4 j( F3 H! @. J4 a0 z* |while[j < [trade-record-one-len] of myself]' Z9 Q3 G7 b7 v. u5 a. Y
[! b" {' t3 q. |* ?
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)4 z% V' Q+ ~: J# G7 F: v
set j
$ j( U; i# {4 p# w. P( j + 1)

2 Q$ L- n4 O7 z]3 B( r  q$ ^, n, }0 B1 F1 P
let k 3! m. K& Z" K2 X8 }: B7 d
let power 0; N8 q8 @% F; [$ @$ A
let local 0
) A% I, B* A  }3 b5 v* Awhile [k <[trade-record-one-len] of myself]; p3 B( k  k' z$ v/ Q0 i
[
3 @$ u2 O& W% w4 B* c7 s  S: Iset 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)
$ u3 Y" w% U5 ?% J! g. C. Vset k (k + 1)
1 I6 A5 a+ c+ t6 d9 R7 o]& Q/ h& O; D9 w( O. N. M
set [local-reputation] of myself (local)
. Q0 f& y2 @* m. w. D! q' eend
1 n- s$ y& X$ z: l9 h1 z# P
4 `/ s6 {& [( Y' H3 k# Fto update-neighbor-total
; d7 g# X. N/ C: g) _; o5 N! @' [; ]# q
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]( Q9 W$ y8 y- n) f
4 V2 X7 b: f  r5 \  N9 r

2 J1 [9 z' X2 Qend
( z& b' k& O2 B* a, k9 \" W. u
to update-credibility-ijl 5 S  x/ K& J" f
( O( E& T) x3 {
;;
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。
) H' w0 p, ]1 ?5 }let l 0
; o# O2 p+ K3 z' iwhile[ l < people ]
) n( T% t' v! d2 R# D" X, e;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价
7 W- ]/ S% W7 \# O1 A3 W9 I% f[( K' w5 d& R4 q& Z  d' D, {
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)  }) }- Q0 ~; [# g/ L
if (trade-record-one-j-l-len > 3)) k- P- T( h! `+ j% f" {
[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
+ `4 T' G6 `0 ~0 [' T% w# olet i 3( G+ O; n4 o5 c  [/ v" I1 F
let sum-time 0
$ Y$ T! h' M; B/ \3 mwhile[i < trade-record-one-len]
, s0 ]5 J6 _* e$ n! z" U' |% Q0 q[
. ?) R' r( ]' e# d! a- cset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )2 ]& |3 ?9 P4 Q: b3 U
set i
6 M) P; H$ Z' K7 L6 Q, M0 M5 f5 X( i + 1)
7 `4 |4 X" j4 Q. w) Q# }5 r
]
8 g1 h/ Y9 t, y: Slet credibility-i-j-l 0
# T8 k0 A# e) X1 ?;;i
评价(jjl的评价)
8 ~3 C: Z8 _% T' h1 y( o. Blet j 3
  w4 ]1 _3 J. @4 c9 c/ c6 I% B* M9 Blet k 4, \. U* F1 M2 q4 ]( {" o
while[j < trade-record-one-len]" |: d: z7 o" s  @! h8 \
[; Q, m  h# x% F. m) p/ C' c4 [, r
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
) h' ]6 z& @3 mset 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); w7 {7 \- {- r1 Q3 T* A
set j2 ^& ]) J5 ^0 s8 K5 @
( j + 1)
/ D, F  t. ^  i+ b+ u5 }6 ~
]
- }* i1 a0 T" E+ `$ {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 ))$ f( y- y8 Z$ a" W  _& U

) v- C5 g5 D2 C0 P+ r
  l; a! p( B. q3 l& y! S1 {' q
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))# b( y& y* `  d
;;
及时更新il的评价质量的评价' y2 o# X6 b+ e$ Y: \9 B' p4 R
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
7 B% V0 ]  Q2 b+ U9 Z& nset l (l + 1)8 Q; e$ v: n$ ~+ `+ k
]
+ h1 n/ v3 u8 U* Zend" a( \6 q' X7 c8 }' f8 x
8 R$ H0 U5 H- ]# n  S+ {! t
to update-credibility-list! H. e2 X( _" c3 h0 ^* \9 ^1 f) T
let i 0' A# A: Y4 }5 S
while[i < people]
4 s* f' O" x! ?3 B7 e[! ^' W; \& l( S6 M+ s0 E2 E1 Z
let j 0' y5 b/ g* h( M
let note 04 f* k! M9 b( A/ m+ v+ P
let k 09 l5 [6 \, h6 c! m8 G0 [+ s
;;
计作出过评价的邻居节点的数目9 N0 {1 c/ a& K4 K
while[j < people]
' U5 S# f  y0 b1 `[: ~7 E. ^6 Z  f; t
if (item j( [credibility] of turtle (i + 1)) != -1). `  h) [* j- a
;;
判断是否给本turtle的评价质量做出过评价的节点
. I$ c1 R* Z* V- Z) j6 w[set note (note + item j ([credibility]of turtle (i + 1)))( S1 T8 s; h& \3 r- {
;;*(exp (-(people - 2)))/(people - 2))]
# g; O' S6 K5 v9 v
set k (k + 1)9 r, p8 ]5 z8 l4 ?% R3 Y" N$ p
]
# G# w  o. H! s- |$ Yset j (j + 1)
* n. ^* z8 [% ?, ~: Q' a) R: U], z+ c- W! H5 s4 Y/ ~$ p& x- n
set note (note *(exp (- (1 / k)))/ k)
5 Y1 E' z; F* z- B6 Oset credibility-list (replace-item i credibility-list note)' \: J& N% _4 C3 X3 e. L" z+ Y
set i (i + 1)
4 i( e0 ^2 _( ?7 ?8 V/ Z]
5 v* U0 l( k9 ~7 fend
/ B5 \! d7 ^, _' i, j
1 G8 K( |: j" R" b; `- r$ r& xto update-global-reputation-list3 |) P8 Z1 ^6 A/ q. K. Z  K$ K
let j 0
) W6 a& ?2 s' W0 _  Owhile[j < people]
  @6 e& ?7 J9 z! y+ l8 Y[
4 y. D: L* V% R8 ~let new 0  W" m$ }/ K, L7 y! l0 f3 y
;;
暂存新的一个全局声誉
# k2 I- [4 r9 E; qlet i 0
" w% `8 T3 s+ A' x+ ?+ w4 M. o& }let sum-money 04 {( q/ F- ^. D9 k6 J, B6 \, ?  n6 d
let credibility-money 0
# Y7 l  o4 q; n- Bwhile [i < people]
7 I$ Q8 {! D/ w[7 A1 y+ X0 R; Y8 d+ {5 g% m
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))7 ?7 e& t  E; v9 `: C- C
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))3 \2 h$ o: u7 @' [3 M
set i (i + 1)8 D9 D) l, a$ J! `" z3 Z- G
]
: e1 |2 B9 }" K, y  T8 H; Flet k 0
" U7 P8 ]( }2 Q: `let new1 0
; c4 |6 ?: S8 M3 b( A1 v/ gwhile [k < people]/ ^0 e* l: p6 s- g" [) ?
[% r5 g( T0 w3 k: W7 T
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)
6 B* t# u) R, y! z. {, Jset k (k + 1)
% M7 c3 t' T4 [' `0 E  D! ?) c/ ^]4 Q( J6 U# I* d' m" J7 x! L4 t- m' x
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) % ^2 P5 W9 m& A) H7 G$ E5 q+ H
set global-reputation-list (replace-item j global-reputation-list new)7 {* y' m7 r1 }) |1 n" c
set j (j + 1)5 E: W$ g6 c; X: S
]+ ]2 j% g% G: A
end0 h' l0 @1 |4 H' s) u* R3 D; W7 H  R6 Q, s

9 Q, D: j/ [# ?2 ?- O% {$ a9 F+ Y" X

8 o' H; R8 o& xto get-color
( M  t7 T  o! m5 R; Q6 V
% O  }& \2 ^2 Q. m5 xset color blue
) g& l, f% z( w3 h; W1 u6 G) x
end
/ B1 r$ Q8 O4 S. U3 X, S$ h3 S( f5 z/ D3 W/ w+ z" o4 s
to poll-class
, e+ d5 A3 s, Z' f9 e9 B( S- [end' \9 D% O) {* j* [% ^4 F- Z

1 T4 m' b+ n% n. ?to setup-plot1
( P# M% Q; A. w5 q
8 ^5 i7 t, J/ ~1 R1 x- K5 k7 K1 |set-current-plot "Trends-of-Local-reputation"
- ^6 m8 Z# K( ~6 I1 y, c9 Y, W
: ~9 C+ O* I+ H9 }
set-plot-x-range 0 xmax
9 F; o$ W3 x  `) V( C. A

0 i% s' C% |' |4 U  ?  _6 V0 [" B3 ?set-plot-y-range 0.0 ymax

/ ~- u+ Q; p; {' v. M7 jend
5 r' Z6 ^: k) V( J
5 y- ^; E" H) r8 U7 y5 L4 k" [4 m2 uto setup-plot2
% X6 e7 N6 r8 \/ P  Y
( n7 G7 Q  V7 C3 P' |3 g  [set-current-plot "Trends-of-global-reputation"

7 E2 |, p& U0 c9 e) s; [- r
, S8 F2 z( M' iset-plot-x-range 0 xmax

/ h2 a" l7 s# P" v) k& @
/ W8 ?+ c4 |+ O: Kset-plot-y-range 0.0 ymax
0 Q' l3 L, c, C# X: o. M* M" m
end( I+ Z( }. {1 c4 z

- a- `( D) B( z( Xto setup-plot3( L. S, s) p3 t: x- K8 J
( {# u! q9 }5 r& L. O1 s
set-current-plot "Trends-of-credibility"

6 z& |- \" i; U9 H3 b: O9 J2 n7 V% g- Q9 S
set-plot-x-range 0 xmax
8 R; M( z0 n2 S* \& b
, r8 `: h. O9 k2 c. x# s- b
set-plot-y-range 0.0 ymax
, }( D/ H" p9 e! {3 T/ ]: F: L
end8 k* X' k, S, t' f! P/ a5 `

$ t! o; e( s! Y; v8 n* ^to do-plots
5 q9 Q/ ~" i% p% Rset-current-plot "Trends-of-Local-reputation"( z) a$ C7 x( f
set-current-plot-pen "Honest service"/ b: w$ k' k, c% Q9 C* K
end, c' d) ?# @/ q4 U$ \* i
9 C) T" v; B$ @8 |# c4 X4 \- C
[ 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.* _6 t) L1 N* V, y; ^+ H
2 o. a$ x8 y8 M' |; h" G# [
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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